СИСТЕМА И СПОСОБ СВАРКИ С УПРАВЛЕНИЕМ ЭЛЕКТРИЧЕСКОЙ ДУГОЙ, ОСНОВАННЫМ НА ЦИФРОВОЙ СВЯЗИ

Изобретение относится к области сварочных систем. Система включает в себя сварочный источник питания и по меньшей мере один сварочный компонент, которые оснащены схемами цифровой связи для синхронизации и согласования заданий, связанных со сварочной операцией. Задания могут инициироваться и завершаться независимым образом или с согласованием на основании синхронизации. Некоторые из заданий могут выполняться компонентами сварочной системы в виде незамкнутого цикла или в виде замкнутого цикла на основании обратной связи параметров сварки. Кроме того, некоторые задания могут быть независимыми друг от друга или взаимозависимыми и при этом параллельно выполняться разными компонентами системы. Использование изобретения позволяет повысить гибкость в управлении сварочными операциями и уменьшить задержки при их осуществлении, что приводит к повышению качества сварочных работ. 3 н. и 16 з.п. ф-лы, 3 ил.

СПОСОБ ОХЛАЖДЕНИЯ МНОГОКОМПОНЕНТНЫМ ХЛАДАГЕНТОМ ДЛЯ СЖИЖЕНИЯ ПРИРОДНОГО ГАЗА

Изобретение относится к сжижению богатого метаном потока сжатого газа, в котором сжижение потока газа происходит в теплообменнике, охлаждаемом холодильной машиной с многокомпонентным хладагентом с замкнутым циклом для производства богатого метаном жидкого продукта, имеющего температуру выше приблизительно -112oС и давление, достаточное для того, чтобы жидкий продукт был в точке начала кипения или ниже нее. Сжиженный газообразный продукт затем помещают в емкость для хранения при температуре выше приблизительно -112oС. Использование изобретения позволит более экономично и эффективно произвести сжижение газа. 3 с. и 18 з.п. ф-лы, 7 табл., 10 ил.

СИНЕРГЕТИЧЕСКАЯ СИСТЕМА СВАРКИ

Изобретение относится к области сварки, в частности к системе сварки короткой дугой между перемещающимся проволочным электродом и заготовкой, способу управления импульсом тока и электроду с сердечником для флюса, и может найти применение в машиностроении. Система включает: источник питания с устройством управления для создания импульса тока, подводящего энергию к электроду для расплавления торца электрода, и режима переноса расплавленного металла, и с отслеживанием окончания указанного импульса расплавления; датчик времени для измерения фактического времени между окончанием импульса и короткого замыкания; устройство для регулирования требуемого времени от импульса до короткого замыкания; схему для создания корректирующего сигнала основанного на различии между фактическим временем и требуемом времени; схему, чувствительную к корректирующему сигналу для управления заданным параметром импульса тока. Электрод с сердечником является самозащитным электродом с сердечником из флюса и содержит различные ...

СИСТЕМЫ ХРАНЕНИЯ И ПОДАЧИ ТОПЛИВА В ВИДЕ СЖИЖЕННОГО ПРИРОДНОГО ГАЗА (СПГ-ТОПЛИВА) ДЛЯ ТРАНСПОРТНЫХ СРЕДСТВ, РАБОТАЮЩИХ НА ПРИРОДНОМ ГАЗЕ

Изобретение относится к системам хранения сжиженного природного газа под давлением (СПГД-топлива) от примерно 1035 до примерно 7590 кПа и при температуре от примерно -123 до примерно -62oС и подачи испаряющегося СПГД-топлива для сгорания в двигателе. Системы подачи и хранения топлива имеют резервуары для хранения топлива, которые выполнены из сверхвысокопрочной низколегированной стали, содержащей менее 9 вес.% никеля и имеющей предел прочности при растяжении, превышающий 830 МПа, и температуру перехода от пластичного разрушения к хрупкому ниже, чем примерно -73oС. Изобретение особенно применимо для транспортных средств с двигателями, предназначенными для работы за счет сгорания природного газа. Использование изобретение позволит создать экономичную систему хранения и подачи топлива для сгорания в двигателе автомобиля. 6 с. и 9 з.п. ф-лы, 3 табл., 4 ил.

Способ определения сопротивления вылета сварочного электрода

Изобретение может быть использовано для оптимизации режимов сварки плавящимся электродом. Электрод располагают неподвижно в двух токоподводах, измеряют его длину между токоподводами, пропускают по электроду ток, измеряют изменение значений тока и падения напряжения во времени и получают экспериментальную зависимость сопротивления единицы длины неподвижного электрода от времени протекания тока. Задают скорость расплавления электрода в реальных условиях сварки и получают на основании экспериментальной зависимости распределение сопротивления единицы длины электрода в сечении с координатой х в момент времени t =x/V, где x - координата сечения вылета электрода, см, V- скорость расплавления электрода, см/с. Проводят интегрирование полученного распределения единичного сопротивления электрода в каждом сечении его вылета. Координату х при механизированной сварке электродной проволокой отсчитывают от сечения подведения тока, а при ручной дуговой сварке принимают равной длине расплавленного участка ...

ТОКОПРОВОДЯЩИЙ НАКОНЕЧНИК ДЛЯ ЭЛЕКТРОДУГОВОЙ СВАРКИ

Предлагаемая полезная модель относится к электродуговой сварке, в частности к конструкции токопроводящих наконечников для автоматической и полуавтоматической сварки и может быть использовано в автоматах и полуавтоматах дуговой сварки плавящимся электродом. Токопроводящий наконечник для электродуговой сварки включает корпус с центральным продольным сквозным отверстием и токопроводящий элемент. На корпус токопроводящего наконечника 1 навинчена коническая втулка 2, внутри которой расположен токопроводящий элемент 3 выполненный в виде сегментов усеченного конуса с продольными проточками, образующими при совмещении сегментов канавку 5 для электродной проволоки, на токопроводящем элементе установлена прижимная пружина 4 с упором в торцевую часть корпуса токопроводящего наконечника. Коническая наружная поверхность токопроводящего элемента 3 выполнена прилегающей к внутренней поверхности конической втулки 2. Продольные проточки токопроводящего элемента 3 выполнены таким образом, что образуют канавку ...

Технологическа лини по производству защитной сварочной газовой смеси (варианты)

СПОСОБ ЭЛЕКТРОДУГОВОЙ СВАРКИ ЧУГУНА СО СТАЛЬЮ

Изобретение относится к сварочному производству, а именно к сварке чугунных деталей с деталями из стали. В зоне сварки с зазором 0,15-0,45 мм для получения нахлесточного сварного соединения устанавливают стальную и чугунную детали. Подают стальную электродную проволоку и осуществляют сварку в полуавтоматическом режиме электрозаклепками при временем сварки 2-5 с и с перерывами между ними не менее 3 с. Сварку ведут в смеси углекислого газа и кислорода при соотношении 83-99% СО2 и 1-17% О2 на токе 90-180 А и напряжении на 0,5-3,5 В меньше установленного для заданного тока. Повышается качество сварного соединения за счет снижения вероятности появления трещин. 1 з.п. ф-лы., 1 табл.

ГОРЕЛКА ДЛЯ РУЧНОЙ СВАРКИ ПЛАВЯЩИМСЯ ЭЛЕКТРОДОМ

Изобретение относится к сварочному оборудованию, а именно к горелкам для ручной сварки плавящимся электродом в среде защитных газов. Горелка удобна в эксплуатации и позволяет улучшить отсос газов из зоны сварки. Горелка содержит мундштук, полую рукоять с расположенным внутри нее токоведущим каркасом в виде двух балок с продольными каналами для прохождения защитного газа. Каркас жестко соединен с мундштуком и узлом подключения кабеля. Узел подключения кабеля выполнен из двух половин, образующих полость, в которой герметично укреплены балки и кабель. Тракт подачи плавящегося электрода состоит из спирали и на участке длины токоведущего каркаса совмещен с одним из его каналов. Трубка подачи защитного газа соединена с полостью узла, сообщающейся с каналами балок. 6 ил.

СПОСОБ ДУГОВОЙ СВАРКИ ПЛАВЯЩИМСЯ ЭЛЕКТРОДОМ

Использование: для сварки плавящимся электродом с управлением энергией в течение времени короткого замыкания в любой отрасли народного хозяйства. Сущность изобретения: в момент начала короткого замыкания ток снижают до 0 в течение времени τ зависящего от энергии, затрачиваемой на образование капли, а на каплю воздействуют дополнительной энергией или дополнительной механической энергией, или дополнительной электромагнитной энергией. 3 з.п. ф-лы, 4 ил.

ШЛАНГОВЫЙ ПРОВОД

Использование: для дуговой сварки в защитных газах, в конструкции автоматов и полуавтоматов для сварки плавящимся электродом. Сущность изобретения: шланговый провод для сварочных автоматов и полуавтоматов содержит наружную оболочку, внутреннюю и внешнюю стальные проволочные спирали, токоподводящий проводник. Внешняя спираль выполнена с пластичной оболочкой, например, из термоусаживающейся полиэтиленовой трубки, а подача газа осуществляется по кольцевому зазору между спиралями. Использование кольцевого канала между проволочными спиралями с обеспечением герметичности за счет пластичной оболочки на внешней спирали позволяет обеспечить устойчивую подачу защитного газа в зону сварки при компактном сечении и небольшом весе шлангового провода. 1 ил.

УСТРОЙСТВО ДЛЯ ЭЛЕКТРОДУГОВОЙ СВАРКИ

Изобретение относится к устройству для электродуговой сварки плавящимся электродом сплошного сечения, порошковыми проволоками и самозащитными проволоками в среде активных и инертных газов и их смесях на обратной и прямой полярности в различных пространственных положениях. Фильтрующий конденсатор подключен к выходам источника постоянного тока. Коммутирующий конденсатор соединен верхней обкладкой с плюсом источника постоянного тока, а нижней обкладкой - через зарядный дроссель с анодом зарядного тиристора, который катодом соединен с минусом упомянутого источника. Коммутирующий тиристор соединен катодом с нижней обкладкой коммутирующего конденсатора и зарядным дросселем, а анодом - с анодом силового тиристора. Коммутирующий дроссель соединен одним концом с плюсом упомянутого источника, а другим концом - с анодами силового и коммутирующего тиристора. Плюс упомянутого источника тока соединен со вторым контактным наконечником, через который сварочный ток в паузе передается на электродную проволоку ...

СПОСОБ АВТОМАТИЧЕСКОЙ ОДНОПРОХОДНОЙ СВАРКИ ПЛАВЯЩИМСЯ ЭЛЕКТРОДОМ В ИМПУЛЬСНОМ РЕЖИМЕ ГЕТЕРОГЕННЫХ НИКЕЛЕВЫХ СПЛАВОВ

Изобретение относится к области сварки, а именно к автоматической сварке плавящимся электродом в защитном газе жаропрочных гетерогенных никелевых сплавов, и может использоваться для изготовления и ремонта корпусных деталей и узлов авиационного двигателя. Способ включает предварительную пластическую деформацию свариваемых кромок, последующую сварку импульсной дугой с поперечными колебаниями горелки и с оплавлением кромки на глубину меньше глубины пластической деформации, последующую термообработку путем закалки и старения. Предварительной пластической деформации подвергают свариваемые кромки толщиной 2,0-3,0 мм с формированием на их поверхности нагартованного слоя. Сварку осуществляют в один проход с размером сварочного зазора 0+0,5 мм с обратной стороны шва по всей длине стыка, удельной сварочной энергией 65-75 Дж/мм2 и подачей инертного газа с обратной стороны шва. Обеспечивается получение бездефектных сварных соединений гетерогенных никелевых сплавов толщиной 2,0-3,0 мм с высокой трещиностойкостью ...

Способ автоматической сварки плавлением гетерогенных никелевых сплавов

Изобретение относится к автоматической сварке плавящимся электродом в среде защитного газа соединений из жаропрочных гетерогенных никелевых сплавов толщиной 4,0-5,0 мм и может использоваться для изготовления и ремонта корпусных деталей и узлов авиационного двигателя. Cпособ автоматической сварки включает предварительную пластическую деформацию свариваемых кромок на глубину не менее 200 мкм, сварку в защитном газе плавящимся электродом за два прохода импульсной дугой с поперечными колебаниями горелки и погонной энергией не более 190 кДж/м при каждом проходе и термообработку сварного соединения путем его нагрева до температуры 1050-1070°С с последующим старением и охлаждением на воздухе. Достигается мелкозернистая структура околошовной зоны с повышенной деформационной способностью и сопротивляемостью к образованию горячих трещин при 650-800°С. 2 ил., 2 пр.

ГОРЕЛКА ДЛЯ ДУГОВОЙ СВАРКИ ПЛАВЯЩИМСЯ ЭЛЕКТРОДОМ

Использование: сварочное оборудование для машиностроения и строительства. Сущность изобретения: горелка содержит цилиндрическое керамическое сопло 1, токогазопроводящий шланг, на конце которого закреплен мундштук 5 со сменным токопроводящим наконечником 7. На сопле 1 установлена подвижная насадка 17. Сопло 1 выполнено с двумя упорными колцами 18 и 19 на его наружной поверхности для ограничения перемещения насадки 17. Между мундштуком 5 и шлангом смонтирован тройник со штуцером для подачи газа, перпендикулярным оси горелки. 2 з.п. ф-лы, 4 ил.

СПОСОБ ДУГОВОЙ СВАРКИ И ИСТОЧНИК ПИТАНИЯ ДЛЯ ЕГО ОСУЩЕСТВЛЕНИЯ

Использование: при дуговой сварке неподвижным плавящимся электродом длинномерных изделий большой толщины, более 25 мм. Сущность изобретения: способ дуговой сварки включает установку в зазоре между свариваемыми изделиями плавящегося электрода, выполненного в виде пластины с нанесенным на обе ее противоположные поверхности диэлектрическим покрытием, подключение электрода и изделий к различным полюсам источника питания, зажигание дуги между торцом электрода, обращенным к корню шва, и изделиями и сварку. Питание сварочной дуги осуществляют от источника питания с комбинированной выходной вольтамперной характеристикой, причем зажигают сварочную дугу на пологопадающем участке выходной характеристики источника питания с последующим переходом в диапазоне номинальных сварочных токов на крутопадающий участка выходной характеристики, а при удалении дуги от корня шва на расстояние, большее 15-20 мм, сварку ведут на пологовозрастающем участке выходной характеристики источника питания. Плавящийся электрод ...

СПОСОБ СВАРКИ ПАЯНЫХ ДЕТАЛЕЙ

Использование: для получения сварных соединений преимущественно из дисперсионно-твердеющих никелевых сплавов. Сущность изобретения: соединяют детали-оболочки, каждая из которых состоит из внешней оболочки 1, выполненной из дисперсионно-твердеющего сплава на никелевой основе, и припаянной к ней оребренной внутренней оболочки 2 из медного сплава. В гнезде 4 разделки кромок размещено соединительное кольцо 5, выполненное из сплава оболочки 1. Сварочные кромки и посадочные места кольца 5 покрыты наплавочным слоем 6 из пластинчатого никелевого сплава. Предварительно на поверхность кольца 5 в местах соприкосновения со сварочным швом наносят слой никеля толщиной 10 - 50 мкм, а затем его подвергают обезводораживающему отжигу при температуре 620 - 650oC. Сварку осуществляют в автоматическом режиме до полного заполнения шва. 2 ил.

СПОСОБ ЭЛЕКТРОДУГОВОЙ СВАРКИ ПЛАВЯЩИМСЯ ЭЛЕКТРОДОМ СТЫКОВЫХ СОЕДИНЕНИЙ СТАЛЬНЫХ ИЗДЕЛИЙ

Использование: для сварки плавящимся электродом стыковых соединений. Сущность изобретения: сварной шов формируют при одновременном горении двух дуг - в воздухе между плавящимся электродом и свариваемым изделием и в электролите между свариваемым изделием, установленным на емкости с электролитом, и дополнительным электродом. В качестве электролита используют водные растворы солей легирующих металлов - хрома, цинка, никеля, меди. 4 з. п. ф-лы, 1 ил.

СВАРОЧНАЯ ГОРЕЛКА

Изобретение относится к сварочной горелке (100) для дуговой сварки в защитном газе. Горелка содержит контактный наконечник 25 для подачи сварочной проволоки 13, всасывающее сопло (23) для отсасывания газа из пространства, которое окружает периферию сварочной проволоки и образовано между сварочной проволокой и всасывающим соплом 23, и подающее защитный газ сопло 21 для подачи защитного газа к области сварки из пространства, которое имеется на внешней периферии всасывающего сопла 23 и образовано между всасывающим соплом 23 и подающим защитный газ соплом 21. Расстояние Lts [мм] от рабочего конца контактного наконечника 25 до рабочего конца подающего защитный газ сопла 21 и расстояние Ltk [мм] от рабочего конца контактного наконечника 25 до рабочего конца всасывающего сопла 23 вдоль продольного направления сварочной проволоки удовлетворяют следующим соотношениям: 7≤Ltk≤17 и 0≤Lts≤18. 8 з.п. ф-лы, 12 ил., 7 табл.

СПОСОБ РЕГУЛИРОВАНИЯ ПРОЦЕССА ДУГОВОЙ СВАРКИ ПЛАВЯЩИМСЯ ЭЛЕКТРОДОМ

Способ относится к технологии получения соединения с использованием сварки плавящимся электродом и может найти применение в тех отраслях народного хозяйства, где используется указанный вид сварки. Для повышения точности регулирования в способе регулирования задают эталонные значения параметров режима для стадий каплеобразования и ее перехода, корректируют в процессе сварки с учетом реального процесса законы изменения эталонных значений, после чего в процессе сварки в каждый момент времени фиксируют действующее значение параметра режима и по отклонению этого параметра от заданного значения регулируют процесс сварки, при этом в качестве параметра режима выбирают мгновенную мощность дуги.

ГОРЕЛКА ДЛЯ ЭЛЕКТРОСВАРКИ В СРЕДЕ ЗАЩИТНЫХ ГАЗОВ

Изобретение относится к горелке для электросварки в среде защитного газа. Горелка содержит токогазопроводящий шланг, на конце которого закреплен мундштук со сменным токопроводящим наконечником, сопло, на котором установлена подвижная насадка и опорный штифт. Насадка выполнена в виде хомута с червячным винтом и выштампованной полупетлей, в которую введен опорный штифт. Насадка имеет глубину, равную диаметру опорного штифта. Рабочий конец опорного штифта выполнен в виде конуса или клюшки, или шарика. Тыльный конец опорного штифта отогнут на 90° для предотвращения выпадения опорного штифта из хомута. В результате улучшается качество сварного шва. 8 ил., 2 фото.

Способ изготовления вращательного изделия с помощью нанесения сваркой с холодным переносом металла и вращательное изделие, изготовленное указанным образом

Изобретение может быть использовано для изготовления вращательного изделия, например, рабочего колеса, путем сварки с холодным переносом металла. Вращательное изделие содержит круговой элемент и размещенные на нем лопатки, ограничивающие по меньшей мере один внутренний проход для потока. Вращательная подложка выполнена с возможностью вращения вокруг центральной оси и имеет периферическую поверхность для нанесения на нее присадочного материала. В соответствии с цифровым представлением вращательного изделия определяют сварочную траекторию на указанной вращательной подложке. Сваркой с холодным переносом металла наносят слой за слоем присадочный металл на поверхность вращательной подложки по заданной сварочной траектории. Сначала получают круговую структуру при вращении указанной вращательной подложки. Затем наносят лопаточную структуру путем перемещения сварочной горелки относительно указанной подложки вдоль направления, пересекающего круговую структуру, при удержании указанной вращательной ...

СПОСОБ ИЗГОТОВЛЕНИЯ ОБОЛОЧКИ ИЗ КОНСТРУКЦИОННОЙ КОМПЛЕКСНОЛЕГИРОВАННОЙ ХОЛОДНОДЕФОРМИРУЕМОЙ СТАЛИ

Изобретение может быть использовано при изготовлении тонкостенных осесимметричных сварных оболочек с утолщенными кромками и приваренными к ним кольцами, работающих под высоким давлением. Проводят калибровку, рекристаллизационный отжиг и предварительную механическую обработку мерных заготовок обечайки и колец. Первое деформационное упрочнение заготовки обечайки проводят посредством ротационной вытяжки за несколько переходов с промежуточным рекристаллизационным отжигом, второе - путем закалки и отпуска, ротационной вытяжки и отжига, уменьшающего напряжения. Выполняют ротационную вытяжку до получения утолщенных кромок обечайки. Заготовки колец подвергают закалке, отпуску и окончательной механической обработке с получением кромок под сварку колец соответствующей толщины и длины. После сварки швы подвергают низкотемпературному отпуску токами высокой частоты. Способ позволяет обеспечить высокие механические свойства сварных оболочек при низком уровне остаточных внутренних напряжений, высокую ...

ШЛАНГОВЫЙ ПРОВОД

Изобретение относится к дуговой сварке в защитных газах, а именно к конструкции автоматов и полуавтоматов для сварки плавящимся электродом, и может быть использовано в машиностроении. Цель изобретения: обеспечение устойчивой подачи газа в зону сварки, уменьшение размера и веса шлангового провода за счет осевой подачи газа и герметичности проволочного внешнего канала. Шланговый провод для сварочным автоматов и полуавтоматов содержит наружную оболочку, внутреннюю и внешнюю стальные проволочные спирали, токоподводящий проводник. Новым в проводе является то, что внешняя спираль выполнена с пластичной оболочкой, например, из термоусаживающейся полиэтиленовой трубки, а подача газа осуществляется по кольцевому зазору между спиралями. Использование кольцевого канала между проволочными спиралями с обеспечением герметичности за счет пластичной оболочки на внешней спирали позволяет обеспечить устойчивую подачу защитного газа в зону сварки при компактном сечении и небольшом весе шлангового провода.

СВАРОЧНЫЙ АППАРАТ И СПОСОБ СВАРКИ

... 1. Аппарат (1) для сварки спаренной проволокой, включающий первый трубчатый токоподвод (2) для направления первого расходуемого электрода (4) к сварочной ванне (6) и передачи сварочного тока к первому расходуемому электроду (4), второй трубчатый токоподвод (10) для направления второго расходуемого электрода (12) к упомянутой сварочной ванне (6) и передачи сварочного тока ко второму расходуемому электроду (12), и один источник питания (16), подключенный к упомянутому первому и второму трубчатым токоподводам (2, 10) для создания одинакового напряжения на упомянутых двух расходуемых электродах (4, 12), причем упомянутый аппарат (1) для сварки спаренной проволокой дополнительно включает подающее устройство (20) для подачи нетоковедущей проволоки (22) в упомянутую сварочную ванну, которое установлено для подачи упомянутой нетоковедущей проволоки (22), по существу, перпендикулярно к упомянутой сварочной ванне (6).2. Сварочный аппарат по п.1, отличающийся тем, что упомянутое подающее устройство ...

СВАРОЧНОЕ УСТРОЙСТВО И СПОСОБ СВАРКИ

УСТРОЙСТВО ДЛЯ МЕХАНИЗИРОВАННОЙ ЭЛЕКТРОДУГОВОЙ СВАРКИ ПЛАВЯЩИМСЯ ЭЛЕКТРОДОМ В СРЕДЕ ЗАЩИТНЫХ ГАЗОВ НА ВЕТРУ

СПОСОБ ЭЛЕКТРОДУГОВОЙ СВАРКИ МЕДНЫХ СПЛАВОВ

Способ может быть использован в машиностроении при сварке медных сплавов, а также при ремонтных и восстановительных работах. Цель изобретения - упрощение способа сварки. Сущность изобретения: предварительный нагрев деталей осуществляется дугой плавящегося электрода по основанию кромок наклонной, например на 30°, поверхности деталей со скоростью, равной, например 0,5 мм/с на один миллиметр электрода, при токе 50А до образования сплошного сплавленного ниточного шва. Использование предлагаемого способа электродуговой сварки медных сплавов позволит значительно упростить способ сварки за счет исключения теплового трансформатора.

СПОСОБ ДУГОВОЙ СВАРКИ СТЫКОВ РЕЛЬСОВ

Изобретение относится к области сварочного производства и может быть использовано в промышленном железнодорожном транспорте. Способ дуговой сварки рельсов с многослойным заполнением сварного шва осуществляют возвратно-поступательным перемещением электрода с образованием взаимно перекрещивающихся отдельных участков, причем сварку стойки рельса выполняют на оптимальней режиме, и головки рельса - на режимах 1,6 - 1,7 раза выше оптимального, что обеспечивает равнопрочное сварное соединение сварочной ванны оптимального объема, ...

Токоподводящий наконечник для электродуговой сварки

Способ возбуждения дуги при сварке плавящимся электродом

Изобретение относится к электродуговой сварке плавящимся электродом при автоматической сварке и может быть использовано в различных отраслях промышленности. Цель изобретения - повышение надежности возбуждения дуги и качества сварки. При осуществлении способа плавящийся электрод 2 замыкают на изделие 3. После чего включают одновременно источник питания и перемещение горелки 2. При перемещении горелки 2 со скоростью сварки Vсвпроисходит возбуждение дуги 4. Для того, чтобы процесс возбуждения дуги 4 происходил без электровзрывов, сопровождающихся выплесками плавящегося электрода, подачу электрода 2 задерживают на время, составляющее 0,5...0,9 времени плавления электрода до образования промежутка между концом электрода и изделием, приводящего к обрыву дуги. Способ позволяет возбуждать дугу в местах ограниченного доступа без дополнительного контроля, что обеспечивает его широкое применение его при автоматической сварке. 2 ил.

Сопло к горелкам для электродуговой сварки

... 1. СОПЛО К ГОРЕЛКАМ ДЛЯ ЭЛЕКТРОДУГОВОЙ СВАРКИ, в защитных газах, содержащее полый корпус, в полости которого расположено спиралевидное ребро, отличающееся тем, что, с целью повьшения срока службы сопла путем повьшения эффективности его охлаждения, расстояние между витками ребра и угол наклона ребра к стенке корпуса вьтолнены увеличивающимися в направлении от рабочего торца сопла. 2. Сопло ПОП.1, отличающ е в с я тем, что угол наклона ребра к стенке корпуса увеличивается от 45 у рабочего торца сопла до60° у его нерабочего торца./ ...

Горелка для сварки в щелевую разделку

Изобретение относится к сварочному производству и может быть использовано для дуговой сварки деталей встык. Цель изобретения - расширение номенклатуры свариваемых деталей путем увеличения ее длины без нарушения стабильности подачи электродной ленты в зону сварки, обеспечения надежности работы токоподвода, улучшения условий прохода защитного газа через токоподвод. Горелка содержит корпус 1, внутри которого установлен токоподвод 2 с каналом для электродной ленты. Внизу горелки установлена ось 4, связанная через кулачки 5 со штоками 6, Ось 4 колеблет ленту 3. Канал в токоподводе 2 выполнен широким и в нем имеется не менее трех выступов 11 для изгиба электродной ленты 3. Благодаря наличию выступов 11, расположенных в широкой прорези, лента 3 изгибается в продольном направлении и приобретает дополнительную жесткость, что позволяет подавать ее на значительные расстояния. 3 ил. ел С ...

Способ защиты сварочной горелки от брызг расплавленного металла

Способ механизированной электродуговой сварки

Способ дуговой сварки плавлением

Использование: для электродуговой сварки металлов и сплавов штучными и неплавящимися электродами деталей различных толщин в различных пространственных положениях. Сущность способа: способ осуществляется с периодическим уменьшением и повышением плотности тока. Для этого сварку ведут от управляемого источника питания преимущественно со штыковой хаМзобретения относится к электродуговой сварке металлов и сплавов штучныг ., и неплавящимися электродами различных толщин в различных пространственных положениях и может быть применено в различ- ных отраслях машиностроения и монтажных работах. В современном производстве сварных конструкций в различных пространственных положениях применяют способы сварки с поперечным и продольным колебаниями конца электрода с целью удержания жидкого металла в ванне без воздействия на источник питания дуги (см. Справочник по сварке под ред. Е.В.Соколова , т.2, М,: Машиностроение. 1961, с.163- ...

Устройство для наплавки инструмента в контролируемой атмосфере

Устройство может быть использовано для сварки и наплавки в контролируемой атмосфере, в частности для изготовления режущего инструмента. Устройство содержит водоохлаждаемую герметичную камеру для наплавки, снабженную дополнительно камерой выгрузки, соединенной с ней посредством переходника и выполненной в виде теплоизолированного короба с крышкой . Внутри камеры выгрузки симметрично ее входному отверстию смонтирован двух- сторонне-наклонный лист, а переходник снабжен теплооотражающим экраном-заслонкой . 3 ил.

Способ автоматической сварки углового соединения трубы с фланцем

Изобретение относится к области автоматической электродуговой сварки в среде защитных газов неповоротных угловых стыков горизонтально расположенных труб с фланцем преимущественно плавящимся электродом и может быть использовано для сварки технологических трубопроводов. Цель изобретения - повышение качества сварного соединения за счет обеспечения равномерного заполнения сечения шва по всему периметру сварного соединения при катете (К) шва 4-10 мм. При сварке с поперечными колебаниями электродной проволоки последнюю задерживают на трубе на время 0,1-0,15 с и на время 0,15-0,2 с при толщине трубы соответственно 2-6 мм и 6- 8 мм. На фланце проволоку задерживают на время 0,15-0,2 с и 0,2--0,25 с при толщине фланца 10-15 мм и 16-25 мм соответственно. При этом амплитуду колебаний изменяют по закону (fi+siny ), где А - амплитуда поперечных колебаний проволоки (мм), ф - гол положения электродной проволоки относительно вертикальной оси поперечного сечения трубы (град ), k - катет сварного шва (мм) ...

Рычажная горелка

Переносное устройство для полуавтоматической дуговой сварки

Устройство для дуговой сварки

Токоподводящий мундштук

Горелка для сварки плавящимся электродом

Способ дуговой электросварки

CПOCOБ ДУГOBOЙ TOЧEЧHOЙ CBAPKИ ПЛABЯЩИMCЯ ЭЛEKTPOДOM

CURRENT-CONDUCTING TIP

DEVICE FOR WELDING IN NARROW PREPARATION OF THICK ARTICLES

DEVICE FOR HAND-FACING OF TOOLS IN CONTROLLED ATMOSPHERE

METHOD OF AND DEVICE FOR ALTERNATING CURRENT WELDING WITH CONSUMABLE ELECTRODE

METHOD FOR HEATING UP PROTECTION GAS AND WELDING APPARATUS FOR WELDING WITH HEATED UP PROTECTION GAS

Горелка для сварки в среде защитных газов

Сущность изобретения: сопло горелки выполнено сосным из тонкостенной втулки 6 и наконечника 7. Втулка 6 выполнена с продольными прорезями и фиксирующим кольцевым выступом. Сопряженный с втулкой 6 наконечник 7 выполнен с кольцевой выемкой, по форме соответствующей кольцевому выступу. Сопряженные поверхности наконечника и втулки выполнены коническими . Втулка 6 выполнена из титана. Срез отсасывающего сопла 15 горелки расположен с зазором относительно нерабочего торца наконечника 7. 2 з.п.ф-лы, 2 ил.

Способ дуговой сварки плавящимся электродом

Токоподводящий наконечник

Изобретение относится к деталям сварочного оборудования для автоматов и полуавтоматов дуговой сварки. Цель изобретения - повышение.срокэ службы наконечника . Двухслойный наконечник выполнен с наружным слоем из меди и внутренним из композиционного материала составом: ПН73Х16СЗРЗ - 1,0-2,0%, цирконий - 0,5-0,7%, медь - остальное. Толщина внутреннего слоя составляет 0,5-1 диаметра внутреннего канала наконечника. В этом случае наконечник сохраняет суммарную электропроводность 90-95% от меди и срок его службы в 3-3,5 раза выше, чем прототипа . 1 ил.

Устройство для сварки в среде защитных газов

Использование: во всех отраслях народного хозяйства, где применяется данный вид сварки. Сущность изобретения: горелка для сварки в среде защитных газов состоит из сварочного агрегата, механизма подачи сварочной проволоки,механизма подачи газа, горелки с корпусом-рукояткой , переключателя цепи питания и рычага цепи управления прерывателя подачи газа. Рычаг управления прерывателя подачи газа выполнен в виде шарнирно-под- пружиненно закрепленной к корпусу пластины. Пластина может иметь форму адекватную форме вырезанной части корпуса. Пластина выступает за пределы корпуса в нерабочем положении и заподлицо с ним располагается в рабочем положениях , Корпус горелки в месте размещения рычага управления прерывателя подачи газа имеет углубление. 1 з.п. ф-лы, 4 ил. (Л С ...

Устройство для сварки в узкую разделку деталей больших толщин

УСТРОЙСТВО ДЛЯ СВАРКИ В УЗКУЮ РАЗДЕЛКУ МЕТАЛЛОВ БОЛЬШИХ ТОЛЩИН в среде защитных газов, содержащее корпус, токоподводящий мундштук, снабженный, полостью с otBepcTHflMM для подачи газа е дне ее и установленный в корпусе с возможностью продольного пере 4ещения , и сопло, отличающееся тем, что, с цель(д повышения качества сварки путем улучшения газовой защиты, в боковых стенках мундштука на участке, равном высоте сопла, от рабочего торця выполнены дополнительные щелевые отверстия под углом 30-60С к оси горелки на расстоянии друг от друга по мере удаления от торца, увеличивающемся по закону арифметической прогрессии, причем площадь боковых отверстий выполнена уменьшающейся по мере удаления от рабочего торца также по закону арифметической прогрессии, их суммарная площадь равна суммарной площади отверстий в дне мундштука, а общая площадь всех отверстий равна площади выходного отверстия сопла, при этом устройство снабжено дополнительным соплом, установленным внутри основного, закрепленным на корпусе ...

Горелка для газоэлектрической сварки

Горелка для дуговой сварки

Изобретение относится к сварочному оборудованию, в частности к горелкам для автоматической и роботизированной сварки неплавящимся электродом в среде защитных газов. Цель изобретения - повышение качества сварки начального участка шва. Горелка содержит пневмоцилиндр 1, корпус 2 и сопло 3. Шток 4 соединен с мундштуком 5, на который навинчен скребок 7. Для устранения капли на проволоке при очистке сопел 3 скребком 7 штанги 17 снабжены ножами 18, установленными на рабочих концах штанг. Штанги 17 образуют байонетное соединение с направляющими 19, обеспечивающее поворот ножей 18 вместе со штангами 17 при опускании штока 4. 2 ил.

Способ электрической сварки плавлением

Горелка для сварки в среде защитных газов плавящимся электродом

Способ автоматической дуговой сварки

METHOD OF ARC WELDING OF CONSUMABLE ELECTRODE BY MODULATED CURRENT

Горелка для дуговой сварки

Использование: для дуговой автоматической сварки в среде защитного газа. Сущность-изобретения: горелка содержит корпус, .мундштук, шарнир и сопло. К шарниру присоединена тяга переменной длины, связанная, с диском, установленным на регуляторе скорости сварки. Диск выполнен с пазом для изменения угла наклона сопла. 3 ил.. ..

Горелка для дуговой сварки в среде защитных газов

Использование: горелки для ручной и полуавтоматической сварки в среде защитных газов. Сущность изобретения: горелка содержит головку 1 с. соплом 2 для подачи защитного газа и отсасывающее сопло 3 для удаления пылегазовыделений, расположенную под углом к оси головки полую рукоятку 4, внутри которой установлен токоподвод 5 с коаксиальными каналами 6 для подачи защитного газа и сварочной проволоки. Ката- лизаторное устройство установлено в кольцевом промежутке между соплом 2 для подачи защитного газа и отсасывающим со ...

Mundstück zum Verbindungs- und Auftragsschweißen mit abschmelzender Elektrode

Mundstück zum elektrischen Schweißen mit abschmelzender Elektrode, dadurch gekennzeichnet, dass zenkrecht zum Führungskanal (2) der abschmelzenden Elektrode (3) eine durchgehende Öffnung (4) ausgespart ist, durch die ein stromzuführendes Element (5) mittels einer Blechfeder (7) druckkraftreguliert gegen die Elektrode (3) nachführbar ist.

Schutzgase für Lichtbogenschweissen

Schutzgas-Lichtbogen-Schweissverfahren für Nicht-Eisenmetalle, insbesondere Aluminiumwerkstoffe

GAS METAL ARC WELDING PROCESS

Verfahren zum Schutzgas-Lichtbogenschweissen mit abschmelzender Elektrode

Tröpfchenförmiger Werkstofftransfer mit CO2

Schweißsystem, bei welchem ein Tröpfchentransfer unterstützt wird, ausgestaltet zum: Regulieren eines Ausgangsstrompegels einer Wellenform auf einen Hintergrundstrompegel mit positiver Polarität, um einen elektrischen Lichtbogen zwischen einer Elektrode (E, 1060) und einem Werkstück (W, 1070) aufrecht zu erhalten, wodurch ein schmelzflüssiges Metalltröpfchen (198, 1098) an einem distalen Ende der Elektrode (E, 1060) gebildet wird; Senken des Ausgangsstrompegels unter den Hintergrundstrompegel mit positiver Polarität, nachdem das schmelzflüssige Metalltröpfchen (198, 1098) einen Kurzschluss zu dem Werkstück hergestellt und den elektrischen Lichtbogen (1080) ausgelöscht hat, damit das schmelzflüssige Metalltröpfchen (198, 1098) in eine Pfütze auf dem Werkstück (W, 1070) hinein netzen kann; automatische weitere Verringern des Ausgangsstrompegels zu einer negativen Polarität unterhalb des Hintergrundstrompegels mit positiver Polarität, um zu veranlassen, dass sich das schmelzflüssige Metalltröpfchen ...

Metallkörper mit metallischer Schutzschicht

Metallkörper, auf den zumindest teilweise eine Metallschicht als thermischer und/oder mechanischer und/oder chemischer Schutz aufgetragen ist, die aus wenigstens drei Teilschichten besteht, von denen die erste als Haftschicht direkt auf der Oberfläche des Metallkörpers aufliegt und darauf wenigstens zwei weitere Schutzschichten aufgebaut sind, wobei wenigstens eine Schutzschicht die Bestandteile Eisen und Kohlenstoff und Silizium und Mangan und Chrom und Molybdän und Nickel und Kobalt enthält.

Hybride Schweissvorrichtung

VERFAHREN ZUR REPARATUR UND MODERNISIERUNG VON TURBINENROTOREN.

Systeme für die landgestützte Verteilung mittels Fahrzeugen von Flüssigerdgas

Orbitalschweißsystem mit gekühltem Antriebsgehäuse

Gekühltes Antriebsgehäuse, das Folgendes umfasst: einen Antriebsblock (125), der dafür konfiguriert ist, mindestens teilweise eine Antriebsbaugruppe zu umgeben; eine Isolierplatte (115), die dafür konfiguriert ist, mindestens einen Abschnitt einer ersten Seite des Antriebsblocks zu schließen (125); mindestens eine Motoraufnahme (127; 128; 129) innerhalb des Antriebsblocks (125), die dafür konfiguriert ist, mindestens einen Antriebsmotor aufzunehmen (112; 140; ...); und mindestens einen Kühldurchgang (170; 171; 172; 174), der dafür konfiguriert ist, Kühlmittel durch das gekühlte Antriebsgehäuse zu zirkulieren.

VERFAHREN ZUM HORIZONTALSCHWEISSEN UND SCHWEISSVORRICHTUNG

Brenner zum Lichtbogenschweissen mit einem Draht und einer Kontaktspitze, einer isolierenden Schutzhülse und einer metallischen Düse

Improvements in electric arc welding

... 452,670. Uniting by fusion. HENDERSON, H. M., 7, Cliff Gardens, Scunthorpe, Lincolnshire. April 1, 1935, No. 10150. [Class 83 (iv)] In metallic-arc welding, the electrode is fed to the work through and relatively to a previously formed rigid ' thick - walled consumable tube of combustible, fusible, or volatilizable protective material such that the tube is consumed at a considerably lower rate than the electrode. If desired, an auxiliary arc may be formed between the tube and the work. The tube may consist of carbon or may contain carbon and /or fluxing materials, which, if necessary, may be mixed with materials to render it conductive. The tube 9, which may be lined with flux is of such internal diameter that the electrode passes freely through the tube. The tube may be secured to a holder 8 which may be fed at lower speed than the electrode by a screw 10 rotated by bevel gear from a hand wheel 12, or through reduction gearing connected to the electrode feed, or through relays controlled ...

Pipeline distribution network systems for transportation of liquefied natural gas

Pipeline distribution network systems are provided for transporting pressurized liquefied natural gas at a pressure of about 1035 kPa (150 psia) to about 7590 kPa (1100 psia) and at a temperature of about -123 {C (-190 {F) to about -62 {C (-80 {F). Pipes and other components of the pipeline distribution network systems are constructed from an ultra-high strength, low alloy steel containing less than 9 wt.% nickel and having a tensile strength greater than 830 MPa (120 ksi) and a DBTT lower than about -73 {C (-100 {F) environ.

Thick welded steel pipe of large diameter and production thereof

Circular pipe of large diameter progressively formed of flat stock, the pipe having a single longitudinal seam is seam-welded by preparing welding grooves such that the inner groove is smaller in size and angle than the outer groove, sequentially carrying out submerged arc welding on the inner welding groove, and large current MIG welding to then first layer of the outer welding edge and a submerged arc welding to a second layer thereof.

Ultra-high strength cryogenic weldments

MIG welding gun

A MIG welding gun 2 has a diffuser 23 with an external thread 101 and a frusto-conical back ramp 97. A nozzle assembly 3 includes an insert 73, with a back ramp (87, Fig 3) and a thread (94, Fig 3) that mates with the diffuser thread 101. The threads of the diffuser and insert have respective ramps (93, Fig 3), 103 that mate. A single turn of the nozzle assembly 3 on the diffuser 23 causes simultaneous engagement of the insert and diffuser back ramps (87, Fig 3), 97 and of the insert and diffuser thread ramps (93, Fig 3), 103. Such engagement centers the nozzle 3 to be concentric with the diffuser 23 and also produces a wedging action that retains the nozzle assembly 3 on the diffuser 23 until a relatively substantial reverse torque is applied to the nozzle assembly 3. The nozzle front end 59 preferably has a narrow annulus (71, Fig 2) which reduces the amount of radiant heat from the welding arc that reaches the nozzle. The diffuser 23 also has internal threaded bores 31,33 at each end ...

Lng fuel storage and delivery systems for natural gas powered vehicles

Ultra-high strength cryogenic weldments

IMPROVEMENTS IN OR RELATING TO ELECTRIC ARC WELDING

... 1279453 Welding by fusion UNION CARBIDE CORP 2 July 1969 [12 Sept 1968] 33307/69 Heading B3R A MIG welding torch comprises a wire contact tube 14 which is unthreaded and is held in place by a resilient collet 7. The latter comprises externally coned sections 9 which are radially contracted to grip the contact tube by a locking member L threaded on to the collet. The collet 7 and the locking member L are provided with passages and ports for shielding gas distribution. The collet 7 is soldered, e.g. at 12, to a torch body B which has an insulating, e.g. rubber, sheath 5 and comprises a single or, as shown, separate passages 1, 3 for wire and shielding gas. The locking member L may be injection moulded or, as shown, comprise an outer shell 11, e.g. of stainless or any heat-treatable steel, an insulating member 15, e.g. of a silicone compound, and a body 13 threaded on to the collet 7, the parts 11, 15, 13 being secured together by a pin 20 of insulating material. The outer shell 11 is provided ...

Improvements in electric arc welding apparatus

... 805,677. Welding by fusion. PHILIPS ELECTRICAL INDUSTRIES Ltd. Jan. 3, 1957 [Jan. 6, 1956], No. 306/57. Class 83 (4). Arc welding apparatus comprises a consumable metal disc electrode 1 bearing upon and . rotated by a roller 3 of electrically non-conductive material which runs on the workpiece 2. The roller 3 constitutes one of the wheels of a carriage 7 traversed by a motor 9 and supporting a pivoted arm in which is journalled the electrode 1. The faces of the electrode may be flux coated. In a modification, shielding gas pipes 11 ... 14 are directed towards the welding zone and gas may be directed through two pipes only or through all the pipes at various pressures to control and direct the arc. Carbon dioxide, helium or argon may be used. The Specification also refers to a known process in which a disc electrode has a thick coating, the periphery of which rests on the work and spaces the metal of the disc from the work.

PULSED-ARC WELDING

... 1484940 Control systems for D.C. pulsed-arc welding INST PO METALOZNANIE I TECHNOLOGIA NA METALITE 17 Dec 1974 [17 Dec 1973] 54541/74 Heading H2H [Also in Division B3] In consumable electrode, pulsed-arc welding, the current is a combination of D.C. having a current density related to electrode conductive material cross-sectional area of greater than 100 A./mm.2, and D.C. pulses having a maximum amplitude, related to electrode conductive material mean cross-sectional extent (e.g. diameter) of greater than 720 A./mm. respective durations of 0À5 Î 10-4 to 5 Î 10-4 seconds, a frequency of 200 to 1000 Hz, and leading edge gradient greater than 8 Î 106 A./sec. The welding may be gas shielded, preferably by CO 2 , alone or mixed with other gases, or by inert or inert and active gas, flux-submerged, effected by coated electrodes, or unprotected. The constant D.C. is provided by a source 9 connected to the electrode and a workpiece 10. The D.C. pulses are provided ...

METHODS OF ARC WELDING IN A SUPER-ATMOSPHERIC ENVIRONMENT

Electric arc welding

... 876,729. Welding by fusion. AIR REDUCTION CO. Inc. July 28, 1959 [Aug. 6, 1958], No. 25910/59. Drawings to Specification. Class 83 (4). In carbon dioxide shielded arc welding using a consumable ferrous wire electrode, caesium is supplied to the arc to produce spray transfer of metal from the electrode to the workpiece. The caesium is added in the form of an hydroxide, carbonate, nitrate or chloride as a superficial coating on the electrode, the caesium constituting at least 0.01% of the total electrode weight. The welding is at straight polarity. Except in the case of rimmed steel or ingot iron electrodes it is necessary to use as the coating to produce spray transfer or mixture of a caesium compound with a compound of another alkali metal i.e. sodium, potassium, rubidium, lithium and francium, the added compound again being preferably an hydroxide, carbonate or a nitrate but sodium chloride may be used with caesium chloride. The ratio of caesium atoms to the atoms of the other alkali metal ...

METHOD OF MULTIPLE ELECTRODE GAS SHIELDED ARC WELDING

Inert gas shielded metal arc welding

... 890,827. Welding by fusion. UNION CARBIDE CORPORATION. March 30, 1960 [April 15, 1959], No. 11258/60. Class 83 (4). In arc welding aluminium, magnesium and their alloys by separate arcs formed between a pair of spaced consumable electrodes of the same diameter connected to the positive pole of a D.C. source and a common fusion zone on a workpiece connected to the negative pole, the arcs being shielded by a single stream of inert gas discharged from a single nozzle surrounding the electrodes, the current density in each of the electrodes is in excess of 55,000 amps./sq. inch. The spacing of the electrodes must be sufficient to ensure a smooth weld. Argon and/or helium are the shielding gases and the electrodes may be 96% aluminium 3.5% magnesium and 0.25% chromium. A copper guide tube 6 having passages 65 for the electrodes 1 and removable contact tips 8 is held by a split collet 10 in a torch body 13 carrying but insulated from a water cooled gas nozzle 22.

Improved system for processing storing and transporting liquefied natural gas

Improved cascade refrigeration process for liquefaction of natural gas

Improved process for liquefaction of natural gas

Ultra-high strength cryogenic weldments

Improved multi-component refrigeration process forliquefaction of natural gas

Process of welding the arc under water or pressure higher than the atmospheric pressure.

Process of welding the arc under water.

PIPELINEVERTEILUNGSNETZWERKSYSTEME FÜR DEN TRANSPORT VON FLÜSSIGERDGAS

VERBESSERTER KASKADENKÜHLUNGSPROZESS ZUR VERFLÜSSIGUNG VON ERDGAS

CONFIGURABLE DOUBLE PROCESS WELDING HEAD AND PROCEDURE

Горелка для наплавки металла

Полезная модель относится к сварочному производству и может быть использована в технологии обработки металлов, в том числе для сварки, термоупрочнения, послойного формирования металлических изделий, а именно к аддитивным технологиям, восстановления поврежденных элементов и изношенных поверхностей из низкоуглиродистых, низко- и среднелегированных, нержавеющих сталей.Технический результат заключается в повышении эксплуатационных характеристик за счет обеспечения возможности ее использования для наплавки, послойного формирования металлических изделий, а именно к аддитивным технологиям.Горелка для наплавки металла содержит внешнее сопло, внутри которого размещены токопроводящий наконечник, фиксатор наконечника, керамический изолятор, фиксирующая гайка, канал для подачи сварочной проволоки, канал подачи газа из шлангпакета, в пространстве между внешним соплом и токопроводящим наконечником концентрично установлено внутреннее сопло, имеющее газовые отверстия на границе перехода его цилиндрической части в конусную и предназначенное для разделения защитного газового потока на два концентрических потока. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 192 910 U1 (51) МПК B23K 9/16 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК B23K 9/16 (2019.02) (21)(22) Заявка: 2018141068, 22.11.2018 (24) Дата начала отсчета срока действия патента: (73) Патентообладатель(и): Общество с ограниченной ответственностью "Арк-инжиниринг" (RU) Дата регистрации: 07.10.2019 (45) Опубликовано: 07.10.2019 Бюл. № 28 1 9 2 9 1 0 R U (54) ГОРЕЛКА ДЛЯ НАПЛАВКИ МЕТАЛЛА (57) Реферат: Полезная модель относится к сварочному производству и может быть использована в технологии обработки металлов, в том числе для сварки, термоупрочнения, послойного формирования металлических изделий, а именно к аддитивным технологиям, восстановления поврежденных элементов и изношенных поверхностей из низкоуглиродистых, низко- и среднелегированных, нержавеющих сталей. ...

Method for welding shafts on a vertical rotational axis

A first tubular, inner radial annular seam is produced to weld together two hollow cylinders by narrow-gap tungsten inert gas arc welding. Narrow-gap metal gas-shielded arc welding is used to create another tubular, outer radial annular seam to further weld together both hollow cylinders. In this manner, the rotational axis of the rotor shaft remains vertically aligned throughout the entire production method of welding together the shaft parts. In this manner, the required production time can be advantageously reduced and the use of welding filler can be effectively decreased.

Robot system control method

In a control method of a robot system of the present invention, one of two industrial robots is used as a master robot, and the other is used as a slave robot. Data indicating the relation of the relative position and relative attitude between the master robot and the slave robot in welding conditioning work is stored as one set of information. During teaching work, in a state where the master robot and the slave robot exist at any positions, the slave robot is moved with respect to the position of the master robot so as to reproduce the relation of the relative position and relative attitude indicated by the one set of stored information, or the master robot is moved with respect to the position of the slave robot.

Welding device and carbon dioxide gas shielded arc welding method

A welding device includes a power supply circuit for applying a voltage across a torch and a base metal, and a power supply control device. The power supply control device controls the power supply circuit such that a high level current is output during a first arc period Ta 1 that is the initial period of an arc period, and an arc current corresponding to a regulated welding voltage is output during a second arc period Ta 2 that is the latter period of the arc period. The power supply control device controls the power supply circuit such that a high level current is generated having a waveform increasing and decreasing at a constant frequency and constant amplitude superimposed on the high level current. By superimposing the waveform, the elevation of a droplet caused by an repelled force by the arc can be prevented, allowing a droplet to be formed in stabilization.

Apparatus and method for cohesive joining

The invention relates to an apparatus and to a process for cohesively joining two plates ( 1 and 2 ) having differing melting points, one of which plates, the end plate ( 1 ), includes a light metal material, in particular aluminum material, and the other of which plates, the connecting plate ( 2 ), includes an iron and/or titanium material, wherein a coating ( 9 ) preferably on the basis of zinc or aluminum is provided at least partially on at least one of the abutting faces ( 3′, 3 ″) of the abutting edge ( 3 ) of the connecting plate ( 2 ) which extend inclined with respect to one another, in which process both plates ( 1 and 2 ) are joined together by braze welding so as to abut against one another along their common joint using an additional material ( 5 ) on the basis of light metal, in particular on the basis of aluminum. In order to provide advantageous process conditions, the invention proposes that a recess ( 10 ) be made, before joining, in the abutting edge ( 4 ) of the end plate ( 1 ) for receiving at least part of the coated abutting edge ( 3 ) of the connecting plate ( 2 ), wherein, during joining, braze welding is carried out at least partially over a flank ( 11 or 12 ) of the recess ( 10 ) overlapping the coating ( 9 ) of the connecting plate part.

Method For Arc-Welding Aluminum-Coated Metal Parts Using An Inert Gas Containing Nitrogen

The invention relates to a method for electric arc welding, without a laser beam, one or more metal parts, in particular made of steel, including an aluminum surface coating, in particular a coating consisting of aluminum and silicon, using a protective gas, characterized in that the protective gas consists of a mixture of argon and/or helium, and additionally of nitrogen, in particular less than 30 volume % of nitrogen, typically 2 to 10 volume % of nitrogen. 112-. (canceled)13. A process for the electric-arc welding of at least one metallic part comprising a surface coating based on aluminum , using a shielding gas , wherein the melting of the metal of said metallic part is carried out solely by the electric arc , with no laser beam contributing to the melting , wherein the shielding gas consists of a mixture of argon and/or helium , and nitrogen , said shielding gas containing at least 0.025% and at most 30% by volume of nitrogen.1413. The process of clam , wherein the shielding gas contains at least 0.025% and at most 20% by volume of nitrogen.1513. The process of clam , wherein the shielding gas contains at least 3% by volume of nitrogen or less than 10% by volume of nitrogen.1613. The process of clam , wherein the shielding gas contains at least 4% by volume of nitrogen and at most 8% by volume of nitrogen.1713. The process of clam , wherein the shielding gas contains from 5% to 7% by volume of nitrogen.1813. The process of clam , wherein the metallic part or parts comprise a surface coating based on aluminum having a thickness between 5 and 100 μm.1913. The process of clam , wherein the metal part or parts are made of steel with a surface coating based on aluminum and silicon (Si/Al).2013. The process of clam , wherein the metal part or parts comprise a surface coating based on aluminum and silicon containing a proportion of aluminum between 5 and 100 times greater than that of silicon.2113. The process of clam , wherein the metal part or parts comprise a ...

Hybrid Arc/Laser-Welding Method For Aluminized Steel Part Using A Gas Including Nitrogen And/Or Oxygen

The invention relates to a hybrid laser/arc-welding method using an electric arc and a laser beam that are combined together within a single welding bath, to which molten metal is supplied by melting a filler wire, wherein the welding bath is provided on at least one steel part including an aluminum surface coating, and a protective gas is used, characterized in that the protective gas consists of at least one main compound selected from argon and helium, and of at least one additional compound selected from nitrogen and oxygen. 112-. (canceled)13. A laser/arc hybrid welding process using an electric arc and a laser beam that are combined with one another , a weld pool being produced on at least one steel part comprising an aluminum-based surface coating , wherein the weld metal is provided by melting a consumable wire , and wherein use is furthermore made of a shielding gas , wherein the shielding gas consists of at least one main compound chosen from argon and helium , and of at least one additional compound chosen from nitrogen and oxygen.14. The process of claim 13 , wherein the shielding gas contains from 1% to 20% by volume of said at least one additional compound.15. The process of claim 13 , wherein the shielding gas contains from 2% to 10% by volume of said at least one additional compound.16. The process of claim 13 , wherein the shielding gas contains only nitrogen as additional compound.17. The process of claim 13 , wherein the shielding gas contains from 4% to 7% by volume of nitrogen as additional compound.18. The process of claim 13 , wherein the shielding gas is a He/Ar/N2 or Ar/N2 mixture.19. The process of claim 13 , wherein the steel part or parts comprise an aluminum-based surface coating having a thickness between 5 and 100 μm.20. The process of claim 13 , wherein the metal part or parts are made of steel with a surface coating based on aluminum and on silicon.21. The process of claim 13 , wherein the consumable wire is melted by the electric ...

RAPID CHANGE MIG NOZZLE CONFIGURATIONS AND RELATED METHODS

A rapid change nozzle apparatus includes a nozzle member and a seat or base member wherein the nozzle member may be quickly and easily manually selectively connected with and/or detached from the seat or base member in order for maintenance personnel or operators of an associated welding system to conveniently replace the nozzle as necessary or desired without significant down-time impact relative to the underlying welding processes. The nozzle member is supported relative to the base or seat member by a set of pin members extending from the base member and received in longitudinal and circumferential grooved in the nozzle member body, and by the biasing influence of a spring member disposed between the nozzle member and the base member whereby the spring urges the nozzle member into relative separation from the base member and into contact with the locating pin members. 1. A rapid change nozzle apparatus for use with an associated welding system , the rapid change nozzle apparatus comprising:a base member comprising a base member body having on opposite first and second ends and defining a first hollow passageway extending therethrough, the first end of the base member body comprising a connection portion being configured for selective connecting of the base member with the associated welding system and the second end of the base member body comprising a coupling portion forming a substantially planar front face surface, wherein the first hollow passageway opens in the planar front face surface and is configured for communicating an associated fluid from the associated welding system between the first and second ends of the base member body;a set of locating pin members disposed in a fixed position relative to the base member and extending radially relative to a longitudinal axis extending in a direction perpendicular to the planar front face surface of the base member body;a tip member comprising a tip member body having opposite first and second ends and defining ...

MIG/MAG Welding of Carbon Steel with Rotating Arc and Ar/He/O2 Gas Mixture

The invention relates to a ternary gaseous mixture formed from argon, helium and oxygen, characterized in that it is formed from between 19.5 and 20.5% of helium, between 2.7 and 3.3% of Oi, and argon for the remainder (volume %), and to the use thereof as gaseous protection in a method of electric arc welding of at least one steel part to carbon, using a fusible filler wire. Preferably, the welded parts overlap or cover each other and the rotary arc welding takes place where the parts overlap. 111-. (canceled)12. A process for the electric-arc MIG/MAG welding of at least two carbon steel parts with use of a consumable filler wire , a rotating arc and gas shielding formed of a ternary gas mixture consisting of 19.5 to 20.5% of helium , of 2.7 to 3.3% of O2 and of argon for the remainder (% by volume) , wherein the consumable filler wire is melted by the rotating arc so as to obtain metal transfer by rotating liquid vein and the at least two carbon steel parts overlapping or covering one another , the rotating arc welding taking place at said overlap or covering up.13. The process of claim 12 , wherein the gas shielding is formed of a ternary gas mixture containing from 19.8 to 20.2% of helium.14. The process of claim 12 , wherein the gas shielding is formed of a ternary gas mixture containing from 2.8 to 3.2% of O2.15. The process of claim 12 , wherein the gas shielding is formed of a ternary gas mixture containing from 2.9 to 3.1% of O2.16. The process of claim 12 , wherein the gas shielding is formed of a ternary gas mixture consisting of 20% of helium claim 12 , 3% of O2 and of argon for the remainder.17. The process of claim 12 , wherein the welded parts are in a joggled type configuration.18. The process of claim 12 , wherein the welded parts are constituent components of a pressure vessel of the hot water tank claim 12 , extinguisher claim 12 , compressor claim 12 , refrigeration device or gas cylinder type.19. The process of claim 12 , wherein the welded ...

Method For Arc-Welding Aluminum-Coated Metal Parts Using Oxidizing Gas

The invention relates to an electric arc welding method for welding at least one metal part including an aluminum based surface coating, using a shielding gas. According to the invention, the metal of the aforementioned metal part is melted by the electric arc alone without the use of any laser beam. The invention is characterized in that the shielding gas comprises a mixture of argon and/or helium, nitrogen, and an oxidizing compound selected from oxygen and carbon dioxide.

Method to improve gmaw and gtaw welding performance

A method of controlling a power source includes providing a power supply module. The power supply module includes a first circuit that has at least one first switch. The first circuit is configured to provide a welding current to an electrode of a welding system. The power supply module also has a second circuit that includes a load that is operatively connected to at least one second switch. The second circuit is configured to provide the welding current to the electrode through the load. The method also includes controlling the at least one first switch such that the welding current flows through the at least one first switch and to the electrode during a ramp up portion of a welding waveform and such that no current flows through the at least one first switch during a ramp down portion of the welding waveform. The method further includes controlling the at least one second switch such that the welding current flows through the load and to the electrode during the ramp down portion of the welding waveform. The ramp down portion takes the welding current to a predetermined value.

HOLLOW CONTACT TIP-DIFFUSER FOR GMAW MANUAL/ROBOTIC ARC WELDING MIG GUNS

A consumable component for use in an arc welding apparatus is provided that functions as both a contact tip and a diffuser. The consumable component includes a body having an internal cavity extending from a proximal end portion to a distal end portion. At least one slot extends through an outer wall of the body, between the proximal end portion and the distal end portion and into the internal cavity. An exit orifice extends through the distal end portion of the body, defining a radiused inlet in one form of the present disclosure. 1. A consumable component for use in an arc welding apparatus comprising:a body defining an internal cavity extending from a proximal end portion to a distal end portion;at least one slot extending from an exterior portion of the body to the internal cavity; andan exit orifice extending through the distal end portion of the body.2. The consumable component according to claim 1 , wherein the at least one slot extends normally in relation to an outer wall of the body.3. The consumable component according to claim 1 , wherein the at least one slot extends at an angle in relation to an outer wall of the body.4. The consumable component according to claim 1 , wherein the at least one slot defines at least one angled passage wall in relation to an angle normal to an outer wall of the body.5. The consumable component according to claim 1 , wherein the at least one slot defines at least one rounded passage wall.6. The consumable component according to claim 1 , wherein the at least one slot comprises a substantially polygonal opening.7. The consumable component according to claim 1 , wherein the at least one slot extends at an angle in relation to the longitudinal axis of the body.8. The consumable component according to claim 1 , wherein the at least one slot extends at an angle perpendicular to the longitudinal axis of the body.9. The consumable component according to claim 1 , wherein the at least one slot extends parallel to the longitudinal ...

Centering device for conductor tube for gmaw manual/robotic arc welding mig guns

An arc welding apparatus is disclosed in one form including a conductor tube defining an internal passageway and a distal end portion. The internal passageway has an internal profile proximate the distal end portion. The apparatus further includes an alignment device comprising an exterior profile and an internal passage. The exterior profile is configured for mechanical attachment to the internal profile of the conductor tube. The apparatus also includes a conduit liner disposed in the internal passageway of the conductor tube and the internal passage of the alignment device.

Gas diffuser for gmaw manual/robotic arc welding mig guns

A conductor tube for use in an arc welding apparatus is disclosed that diffuses gas from an aperture in the conductor tube. The conductor tube has an internal passageway and a distal end portion. In one form of the present disclosure, proximate to the distal end portion there is at least one aperture disposed wherein the gas flowing through the internal passageway is at least partially dispersed through the at least one aperture.

ARC WELDING DEVICE AND PROCESS USING A MIG/MAG TORCH COMBINED WITH A TIG TORCH

The invention relates to a device and a process for the arc welding of metal workpieces employing a MIG/MAG welding torch combined with a TIG welding torch so as to operate simultaneously and to obtain welded joints free of protruding defects. 113-. (canceled)14. A device for arc welding metal at least two workpieces , the device comprising a first welding torch , comprising a MIG or MAG welding torch , in combination with a second welding torch , comprising a TIG welding torch , in a way allowing the first welding torch and the second welding torch to operate simultaneously , wherein said first welding torch comprises a wire guide allowing a consumable wire to be guided in a given first direction and the second welding torch comprises a nonconsumable electrode pointed in a given second direction , said first and second directions being substantially coplanar and forming an angle (α) larger than 10° and smaller than 40° , and the nonconsumable electrode comprises a tip (D) located a distance (d) of between 20 and 44 mm from said first direction.15. The device of claim 14 , wherein the tip (D) is located a distance (d) of between 20 mm and 26 mm from the first direction.16. The device of claim 15 , wherein the tip (D) is located a distance (d) of between 36 mm and 44 mm from the first direction.17. The device of claim 14 , wherein the first and second directions form an angle (α) of between 15° and 25°.18. The device of claim 17 , wherein the first and second directions form an angle (α) of between 18° and 23°19. The device of claim 17 , wherein the first and second directions form an angle (α) of 20°.20. The device of claim 14 , wherein the electrode comprises a conical taper to said tip (D) claim 14 , said conical taper having an opening (β) of between 20° and 40°.21. A process for arc welding at least two metal workpieces comprising the steps of:a) gradually producing a weld bead on the at least two metal workpieces by means of a first welding torch, comprising a ...

Welding System and Method

A welding system having a welding gun with a contact tip having an bore extending therethrough and a consumable weld wire. The cross-sectional shape of the bore of the contact tip being is essentially identical to the cross-sectional shape of the weld wire. The bore having an essentially elliptical cross-sectional shape and the weld wire having an essentially elliptical cross-sectional shape. 1. In a combination of a contact tip and a weld wire for gas metal arc welding , the contact tip having a body with opposed ends and a bore extending between the ends wherein the weld wire is configured to extend through the bore; the improvement which comprises: the bore of the contact tip haying a cross-sectional shape essentially identical to a cross-sectional shape of the weld wire wherein the cross-sectional shape of the bore is not a circle.2. The combination of wherein the cross-sectional shape of the bore is essentially a Rello triangle.3. The combination of wherein the cross-sectional shape of the bore is essentially a modified square where sides of the square are arcs.4. The combination of wherein the cross-sectional shape of the bore is essentially a modified pentagon where sides of the pentagon are arcs.5. The combination of wherein the cross-sectional shape of the bore is essentially a square having rounded corners.6. The combination of wherein the cross-sectional shape of the bore is essentially a rectangle having rounded corners.7. The combination of wherein the cross-sectional shape of the bore is essentially a triangle having rounded corners.8. The combination of wherein the cross-sectional shape of the bore is essentially a rhomboid having rounded corners.9. The combination of wherein the cross-sectional shape of the bore is essentially a trapezoid having rounded corners.10. The combination of wherein the cross-sectional shape of the bore is essentially a pentagon.11. The combination of wherein the cross-sectional shape of the bore is essentially a hexagon.12. ...

WELDING APPARATUS AND A METHOD FOR WELDING

The invention relates to a twin wire welding apparatus () including a first contact tube () for guiding a first consumable electrode () toward a weld puddle () and transferring welding current to the first consumable electrode (), a second contact tube () for guiding a second consumable electrode () toward said weld puddle () and transferring welding current to the second consumable electrode (), and a single power source () connected to said first and second contact tubes () for providing the same potential to said two consumable electrodes (), and to a method for operating such an apparatus. 120-. (canceled)21. A twin wire welding apparatus comprising:a first contact tube for guiding a first consumable electrode toward a weld puddle and for transferring welding current to the first consumable electrode;a second contact tube for guiding a second consumable electrode toward said weld puddle and for transferring welding current to the second consumable electrode;a single power source connected to said first and second contact tubes for providing a same potential to said two consumable electrodes; anda feeding arrangement for feeding a cold wire into said weld puddle, said arrangement configured to feed said cold wire essentially orthogonally into said weld puddle.22. A welding apparatus according to claim 21 , wherein said feeding arrangement is arranged to feed said cold wire into said weld puddle at an angle of less than 5° with respect to a surface normal.23. A welding apparatus according to claim 21 , wherein said first and second contact tribes are formed in separate contact tips.24. A welding apparatus according to claim 21 , wherein the first and second contact tubes are connected to said single power source via first and second contact devices claim 21 , wherein said first and second contact devices are separate for the first and second contact tubes.25. A welding apparatus according to claim 21 , wherein said welding apparatus further includes a contact tube ...

TANDEM GAS-SHIELDED ARC WELDING METHOD

In a tandem gas-shielded arc welding method, carbon dioxide is used as a shielding gas for a leading electrode formed by a solid wire, an argon-carbon dioxide gas mixture containing at least 60% by volume of argon gas is used as a shielding gas for a trailing electrode formed by a solid wire or a flux-cored wire, both the leading electrode and the trailing electrode have a reverse polarity, the leading electrode satisfies the relationships “5.00≦(I·V·10)/(W·πr)≦10.00” and “(I·10)/V≧4.50”, and the trailing electrode satisfies the relationships “4.00≦(I·V·10)/(W·πr)≦7.00” and “(I 10)/V≧8.00”. 2. The tandem gas-shielded arc welding method according to claim 1 , wherein a wire diameter a (mm) of the leading electrode satisfies a≦2.0 claim 1 , and a wire diameter b (mm) of the trailing electrode satisfies b≦(a−0.2). 1. Field of the InventionThe present invention relates to a two-electrode welding method in gas-shielded arc welding.2. Description of the Related ArtTechniques for a gas-shielded arc welding method have been proposed in International Publication No. WO2008/016084, Japanese Unexamined Patent Application Publication No. 2004-188428, and Japanese Unexamined Patent Application Publication No. 2010-125496. For example, International Publication No. WO2008/016084 makes an assumption, in tandem gas metal arc (GMA) welding, that there is a different shielding gas composition suitable for each of a leading electrode and a trailing electrode. This is because the leading electrode has a function of increasing the depth of weld penetration into a base material, whereas the trailing electrode has a function of stopping the flow of metal with arc pressure to shape a molten pool, the metal being melted by an arc from the leading electrode and flowing backward from the molten pool. Under the assumption described above, International Publication No. WO2008/016084 proposes a technique in which, by supplying shielding gases of different compositions suitable for the leading ...

FLUX-CORED WIRE AND GAS-SHIELDED ARC WELDING METHOD USING THE SAME

There is provided a flux-cored wire containing flux within a stainless steel or mild steel outer cover for use in stainless steel welding and gas-shielded arc welding using a shielding gas. The flux-cored wire contains, based on the total mass of the flux-cored wire, predetermined amounts of C, Si, Mn, P, S, Cr, Ti, and O. The remainder are Fe and incidental impurities. The shielding gas is pure Ar gas. 1. A flux-cored wire containing flux within a stainless steel or mild steel outer cover for use in stainless steel welding and gas-shielded arc welding using a shielding gas ,the flux-cored wire comprising: based on the total mass of the flux-cored wire,C: 0.10% by mass or less,Si: 1.50% by mass or less,Mn: 2.00% by mass or less,P: 0.050% by mass or less,S: 0.050% by mass or less,Cr: 15.0% to 25.0% by mass,Ti: 0.16% to 1.00% by mass, andO: 0.300% by mass or less,the remainder being Fe and incidental impurities,wherein the shielding gas is pure Ar gas.2. The flux-cored wire according to claim 1 , further comprising: based on the total mass of the flux-cored wire claim 1 , at least one ofAl: 1.00% by mass or less,N: 0.05% by mass or less,Nb: 0.10% to 1.00% by mass, andMo: 3.00% by mass or less.3. The flux-cored wire according to claim 1 , wherein the Cr and Ti contents areCr: 15.0% to 19.0% by mass, andTi: 0.16% to 0.50% by mass,the flux-cored wire further comprising:based on the total mass of the flux-cored wire, at least one ofAl: 1.00% by mass or less,N: 0.05% by mass or less,Nb: 0.10% to 1.00% by mass, andMo: 3.00% by mass or less.4. The flux-cored wire according to any one of to claim 1 , wherein the flux filling factor is in the range of 5% to 30% by mass based on the total mass of the flux-cored wire.5. The flux-cored wire according to or claim 1 , wherein the Nb content is Nb: 0.30% to 1.00% by mass.6. A gas-shielded arc welding method claim 1 , comprising: feeding the flux-cored wire according to into a shielding gas of pure Ar; and passing a pulsed electric ...

Welding systems having non-contact temperature measurement systems

Welding systems including welding torch assemblies are provided. The welding torch assembly may include a welding torch adapted to be utilized in a welding operation to establish a welding arc between the welding torch and a workpiece. Shielding gas may be supplied to the welding torch for establishment of a gas shielding area around a weld pool. The welding torch assembly may also include a temperature sensing system having a non-contact temperature sensor coupled to the welding torch and adapted to sense a temperature of the workpiece at a location outside of the molten weld pool.

WELDING GUN

A welding gun, including a contact tip assembly, a diffuser cap, a tip holder, and a shielding gas diffuser, where the shielding gas diffuser includes a casing and an axial tube extending within the casing, and where the casing and the tip holder are connected via a connection system that includes threads with reduced peaks 1. A shielding gas diffuser , comprising:a casing; andan axial tube extending within the casing.2. The shielding gas diffuser recited in claim 1 , further comprising:a groove formed in a radially inner surface of the casing, and connected to a proximal end of the axial tube.3. The shielding gas diffuser recited in claim 1 , wherein: the casing further comprises a distal end and a radial hole formed in a radially outer surface of the casing near the distal end claim 1 , and wherein the radial hole is connected to the axial tube.4. The shielding gas diffuser recited in claim 3 , wherein a distal end of the axial tube opens to the distal end of the casing.5. The shielding gas diffuser recited in claim 1 , further comprising:a connection system for a tip holder on a radially inner surface of the casing.6. The shielding gas diffuser recited in claim 5 , wherein the connection system comprises threads with reduced peaks.7. The shielding gas diffuser recited in claim 5 , wherein the connection system is axially coextensive with the axial tubes.8. A shielding gas diffuser claim 5 , comprising:a casing; andaxial tubes extending within the casing.9. The shielding gas diffuser recited in claim 8 , further comprising:a groove formed in a radially inner surface of the casing and connected to proximal ends of the axial tubes.10. The shielding gas diffuser recited in claim 8 , wherein the casing further comprises a distal end and radial holes formed in a radially outer surface of the casing near the distal end claim 8 , andwherein the radial holes are individually connected to the axial tubes.11. The shielding gas diffuser recited in claim 10 , wherein distal ...

Adjustable welding head for multiple electrode cladding

A welding head is provided. The welding head includes a bracket and a plurality of blocks coupled to the bracket. Each of the plurality of blocks has a contact tip. The contact tips are adapted to receive an electrode. Further, at least one of the plurality of blocks is capable of variable positioning relative to the bracket.

CONSTRICTING NOZZLE AND TIG WELDING TORCH USING THIS NOZZLE

The constricting nozzle of the present invention includes (i) a cylindrical nozzle body disposed around the forward end of the tungsten electrode rod concentrically with the tungsten electrode rod and defines an annular high-speed gas passage between the nozzle body and the outer peripheral surface of the forward end of the tungsten electrode rod, (ii) a plurality of positioning projections that are protrudently formed on the inner peripheral surface of the nozzle body with predetermined intervals in the circumferential direction and that are arranged along the longitudinal direction of the nozzle body to hold the tungsten electrode rod in the center position of the nozzle body, and (iii) a plurality of gas-flow regulating grooves formed between the positioning projections and that extend in parallel in the longitudinal direction of the nozzle body and regulate the shielding gas (G) flowing through the high-speed gas passage. 1. A constricting nozzle attached to a tungsten inert gas (TIG) welding torch , wherein a shielding gas that has flowed through an inside of a torch body of the TIG welding torch is laminarized by a gas lens disposed at a forward end of the torch body , wherein the laminarized shielding gas is discharged from a cylindrical shielding nozzle disposed at the forward end of the torch body toward a parent material to be welded , wherein an arc “a” is generated between the parent material and a tungsten electrode rod disposed in a center position of the shielding nozzle in an atmosphere of the shielding gas , and wherein the parent material is melted by heat of the arc “a” , and wherein the constricting nozzle comprises:(a) a cylindrical nozzle body disposed around a forward end of the tungsten electrode rod and concentrically with the tungsten electrode rod, and the cylindrical nozzle body defines an annular high-speed gas passage between the cylindrical nozzle body and an outer peripheral surface of the forward end of the tungsten electrode rod;(b) ...

High Toughness Weld Metals With Superior Ductile Tearing Resistance

Weld metals and methods for welding ferritic steels are provided. The weld metals have high strength and high ductile tearing resistance and are suitable for use in strain based pipelines. The weld metal contains retained austenite and has a cellular microstructure with cell walls containing lath martensite and cell interiors containing degenerate upper bainite. The weld metals are comprised of between 0.02 and 0.12 wt % carbon, between 7.50 and 14.50 wt % nickel, not greater than about 1.00 wt % manganese, not greater than about 0.30 wt % silicon, not greater than about 150 ppm oxygen, not greater than about 100 ppm sulfur, not greater than about 75 ppm phosphorus, and the balance essentially iron. Other elements may be added to enhance the properties of the weld metal. The weld metals are applied using a power source with current waveform control which produces a smooth, controlled welding arc and weld pool in the absence of COor oxygen in the shielding gas. 2. The weld metal of wherein the weld metal further comprises between 0.5 and 10 vol. % retained austenite.3. The weld metal of wherein the weld metal has a tensile strength greater than 110 ksi and R-curve toughness higher than a curve represented by a delta value greater than 1.0.4. The weld metal of wherein 50 or more percent of the volume of the cell walls comprises lath martensite and 20 or more percent of the volume of the cell interiors comprises degenerate upper bainite.5. The weld metal of further comprising at least one of the following:not greater than about 0.30 wt % copper,not greater than about 0.04 wt % vanadium,not greater than about 0.30 wt % chromium,not greater than about 0.40 wt % molybdenum,not greater than about 0.04 wt % niobium,not greater than about 0.02 wt % titanium,not greater than about 0.02 wt % zirconium,not greater than about 20 ppm boron.6. The weld metal of wherein said weld metal is applied using a shielding gas comprising helium and argon.7. The weld metal of wherein said ...

HYBRID WELDING METHOD AND WELDING TORCH FOR HYBRID WELDING

An object of the present invention is to provide a hybrid welding method which can improve the stability of the arc, the welding speed, and welding efficiency, and the present invention provides a hybrid welding method in which a TIG arc is generated on the front side in the welding direction, and a MIG arc is generated on the back side in the welding direction in order to weld a welding base material, wherein electric current for the TIG welding is larger than electric current for the MIG welding; and an absolute value of the interval between an intersection of a center axis of a TIG electrode and a surface of the welding base material and an intersection of a center axis of a MIG electrode and the surface of the welding base material is 4 mm or less. 1. A hybrid welding method in which a TIG arc is generated on the front side in the welding direction , and a MIG arc is generated on the back side in the welding direction in order to weld a welding base material , wherein electric current for the TIG welding is larger than electric current for the MIG welding; and an absolute value of the interval between an intersection of a center axis of a TIG electrode and a surface of the welding base material and an intersection of a center axis of a MIG electrode and the surface of the welding base material is 4 mm or less.2. The hybrid welding method according to claim 1 , wherein a gas containing 25% or more of helium claim 1 , and argon gas as residue is used.3. The hybrid welding method according to claim 1 , wherein a gas containing 3% to 9% of hydrogen and argon gas as residue is used.4. The hybrid welding method according to claim 1 , wherein a gas containing 3% to 9% of hydrogen claim 1 , 25% or more of helium claim 1 , and argon gas as residue is used.5. The hybrid welding method according to claim 1 , wherein a gas containing 3% to 9% of hydrogen and helium gas as residue is used.6. The hybrid welding method according to claim 1 , wherein an absolute total(|a|+|β|) ...

GAS SHIELDING DEVICE

A gas shielding device used during a welding step in a controlled atmosphere of a sound attenuation panel includes an inert gas injector to inject inert gas onto the panel and a housing to receive a welding torch. The inert gas injector comprises an inert gas diffuser mounted on the periphery of the housing for receiving the welding torch. 1. A gas shielding device used during a welding step in a controlled atmosphere of a sound attenuation panel , comprising:means to inject inert gas onto said panel; andmeans for receiving a welding torch,wherein the means to inject the inert gas comprise an inert gas diffuser mounted on the periphery of the means for receiving the welding torch.2. The device according to claim 1 , wherein the device is adapted to cooperate with the welding torch and to allow welding perpendicular to and on the reverse side of surfaces of the panel to be welded.3. The device according to claim 2 , wherein the means for receiving the welding torch comprise a housing adapted to receive the welding torch and enable it to pass through a chamber of the device claim 2 , and the diffuser comprises a ring mounted coaxially to the housing receiving the welding torch.4. The device according to claim 1 , wherein the diffuser is configured to ensure non-turbulent feeding of the gas onto surfaces of the panel to be welded.5. The device according to claim 3 , wherein the diffuser is adapted to diffuse the gas indirectly onto the surfaces to be welded claim 3 , the ring of the diffuser comprising gas outlet orifices on its periphery directed towards the concavity of the chamber.6. The device according to claim 1 , wherein the device further comprises a honeycomb grating with through-orifices which is positioned facing surfaces to be welded so as to perform welding through the device. This application is a continuation of International Application No. PCT/FR2012/050192, filed on Jan. 30, 2012, which claims the benefit of FR 11/50705, filed on Jan. 31, 2011. The ...

GAS-COOLED WELDING GUN FOR AN ARC WELDING DEVICE

A gas-cooled welding gun for an arc welding device, comprising an electrically conductive current contact tube disposed concentrically within an electrically conductive outer tube and separated therefrom by an intermediate space. The current contact tube includes a wire guiding channel for a welding wire. A plurality of spacers is disposed at intervals in the intermediate space between the current contact tube and outer tube,. electrically insulating these components from each other. A shielding gas is provided in the intermediate space to cool the system and openings in the spacers allow the gas to flow therethrough. Structures are provided on the current contact tube which increase the overall surface area thereof. Regions of the surface of the current contact tube not covered by spacers are exposed toward the intermediate space and therefore to the shielding gas. 1. A gas-cooled welding gun for an arc welding device having comprising:a current contact tube formed of an electrically conductive material, inside of which a wire guiding channel for a welding wire is formed;an outer tube that surrounds the current contact tube; an intermediate space formed-between the current contact tube and the outer tube; wherein the outer tube is formed of an electrically conductive material; and wherein the intermediate space is formed as a continuous conduit for a shielding gas; andspacers ace disposed between the current contact tube and the outer tube, electrically insulating the current contact tube and the outer tube from one another, wherein these spacers have intermediate openings defined therein in order to allow the shielding gas to pass through, and wherein the spacers are only disposed in partial regions of the intermediate space and that in the remaining regions, the current contact tube with the surface of the electrically conductive material is exposed in the intermediate space, and that, in at least part of the remaining regions in which the current contact tube ...

System and method for pairing welding devices

Systems and methods for pairing welding devices in a welding system. In one method, the method includes sending a pairing request from a first welding device to a second welding device. The method also includes receiving, at the first welding device, a response to the pairing request from the second welding device. The second welding device is physically connected to the first welding device. The pairing request or the response includes a change in welding power, welding consumables, or any combination thereof The method includes pairing the first welding device and the second welding device after the first welding device receives the response to the pairing request from the second welding device.

Electrode diameter sensing consumables

The present disclosure provides a welding system capable of detecting a size of a welding material and automatically implementing appropriate arc starting parameters. The welding system includes a welder, a welding torch, and a sensor, in which the sensor is configured to detect the size of the welding material, directly or indirectly. The welder is automatically configured to produce an arc having the arc starting parameters determined from the size of the welding material detected by the sensor. The present disclosure decreases operational error by automatically changing arc starting parameters and/or welding parameters based upon a change in welding material size, rather than requiring an operator to manually change the arc starting parameters and/or welding parameters.

METHOD FOR BONDING DISSIMILAR METALS TO EACH OTHER

In the bonding of an aluminum alloy material () to a steel material () by TIG welding, a tungsten electrode () which has a tip having a diagonally cut tip face () and asymmetrical to the electrode center axis () is used. The tungsten electrode () is oriented toward the welding line from the upper side of the aluminum alloy material () in such a manner that the tip face side of the tungsten electrode () faces the aluminum alloy material () side and the tip () of the tip face () faces the steel material () side. In this manner, an arc () from the tip () is directed to the steel material () side. 1. A method for bonding dissimilar metals to each other , comprising:overlaying at least a part of an aluminum alloy material on a steel material; andfillet welding the aluminum alloy material and the steel material by DC TIG welding using a bar-like tungsten electrode while feeding a flux-cored wire to a step section formed by an end of the aluminum alloy material and a surface of the steel material with an aluminum alloy material side being made a positive pole,whereinthe tungsten electrode comprises a tip of a shape asymmetric with respect to an axis of the tungsten electrode,the tip comprises a tip surface shaped at an angle of 20° or more and 40° or less relative to the axis, andduring said fillet welding, an arc generated from the tip of the tungsten electrode is directed to a steel material side by directing the tungsten electrode to a welding line from an upper side of the aluminum alloy material so that the tip of the tungsten electrode is directed to the steel material side and that the tip surface is directed to the aluminum alloy material side.2. The method according to claim 1 , wherein the tip of the tungsten electrode locates right above the welding line of the aluminum alloy material.3. A method for bonding dissimilar metals to each other claim 1 , comprising:overlaying at least a part of an aluminum alloy material on a steel material; andfillet welding the ...

WELDER WITH INTEGRATED WIRE FEEDER HAVING SINGLE-KNOB CONTROL

A welding-type component is disclosed having a single user input that requires a user to input only a single parameter to identify a welding-type process. From the single input, operating parameters for the welding-type process automatically are set or otherwise determined. The invention streamlines the welding-type process prescription process by allowing a user to input only a single parameter than can be used to determine and coordinate other parameters for the welding-type process. 122.-. (canceled)23. A tungsten inert gas (TIG) welding system , comprising: a power input configured to receive an input power into the enclosure for power conversion;', 'a power output configured to deliver welding power from the enclosure to a welding torch to perform a TIG welding process on a workpiece;', 'a control panel having a single input device configured to allow a user to select a characteristic of the workpiece; and', 'circuitry configured to establish operating parameters for the TIG welding process based on the selected characteristic of the workpiece., 'an enclosure comprising24. The TIG welding system of claim 23 , wherein the single input device comprises a single control selector.25. The TIG welding system of claim 24 , wherein the single control selector is a single control knob rotatably positionable to one of a plurality of positions.26. The TIG welding system of claim 25 , wherein each position corresponds to a discrete material thickness to be welded.27. The TIG welding system of claim 25 , wherein each position corresponds to a range of material thicknesses to be welded.28. The TIG welding system of claim 23 , wherein the operating parameters established comprise a weld voltage of the TIG welding system.29. The TIG welding system of claim 23 , comprising a wire feeder configured to deliver filler material to a weld claim 23 , wherein the wire feeder speed is proportional to a weld voltage set by the circuitry.30. The TIG welding system of claim 23 , wherein ...

CORED ELECTRODE FOR REDUCING DIFFUSIBLE HYDROGEN

A cored electrode to form a weld bead with a low diffusible hydrogen is described in a gas shielded electric arc welding process. The cored electrode includes a metal sheath and a fill composition. The filling composition includes a slag forming agent and at least two fluorine containing compounds. 1. A method of forming a weld bead having a low diffusible hydrogen content comprising: said slag forming agent comprising titanium oxide and a titanium oxide containing compound,', 'said titanium oxide constituting a majority weight percent of said slag forming agent and', 'said titanium oxide containing compound constituting at least 3 weight percent of said fill composition,', 'each of said fluorine containing including at least about 0.2 weight percent fluorine based on the weight percent of said fill composition,', 'said fill composition including at least about 0.5 weight percent fluorine, and,, 'providing a cored electrode that includes a metal sheath and a fill composition, said fill composition including a slag forming agent and at least two fluorine containing compounds;'}at least partially melting said cored electrode by an electric current to cause said melted portion of said cored electrode to be deposited on a workpiece.2. The method as defined in claim 1 , wherein{'sub': 3', '2', '2', '3', '6', '3', '6', '2', '6', '2', '6', '3', '2, 'said at least two fluorine containing compounds are selected from the group consisting of AlF, BaF, CaF, NaAlF, KAlF, NaSiF, KSiF, MnF, SrFor mixtures thereof.'}3. The method as defined in claim 2 , wherein{'sub': 3', '3', '6', '3', '6', '3', '2, 'a first fluorine containing compound includes a compound selected from the group consisting of AlF, NaAlF, KAlF, MnF, SrF, and combinations thereof,'}{'sub': 3', '3', '6', '3', '6', '2', '6', '2', '6', '3', '2, 'a second fluorine containing compound includes a compound selected from the group consisting of AlF, NaAlF, KAlF, NaSiF, KSiF, MnF, SrF, and combinations thereof, and further ...

WELDING PURGE CONTROL USING ELECTRONIC FLOW CONTROL

A purging arrangement for a welding system uses automatic flow control function, such as an MFC, to control purge gas flow rate and/or pressure at the weld site. 113-. (canceled)14. Welding system , comprising:a welder power supply, said welder power supply being connectable to an orbital weld head for providing electrical power during a welding operation.,at least one mass flow controller,a control system operably coupled to said at least one mass flow controller, said control system being configured to control flow rate of a purge gas from said mass flow controller,a housing that encloses said power supply, said at least one mass flow controller and said control system.15. The welding system of wherein said housing comprises a handle that can be manually grasped for portability of the welding system.16. The welding system of wherein said control system is operably coupled to said welder power supply and inhibits a welding operation until a purging operation starts.1720-. (canceled)21. A method for controlling purging during a welding operation claim 14 , comprising:performing a butt welding operation on end to end abutting tubular workpieces using an orbital welder,applying a flow rate profile for purge gas to either an outer diameter region or an inner diameter region at the weld site,said flow rate profile comprising at least a first flow rate before a welding operation begins and a second flow rate during the welding operation with said second flow rate being lower than said first flow rate.22. The method of wherein said step of applying a flow rate profile for purge gas to either an outer diameter region or an inner diameter region at the weld site comprises a third flow rate after the welding operation ends with said third flow rate being higher than said second flow rate.23. The method of wherein said step of applying a flow rate profile includes using an electronic automatic purge control.24. The method of wherein a welding operation is automatically ...

Method for Weld Removal, Cutting, and Gouging With Vacuum Removal of Byproducts

A method for metalworking using an adjustable vacuum and support system for evacuating particulate matter, smoke, excess gas, and molten metal from a work area during welding and for providing adjustable support to a welding head. The vacuum system has a vacuum head and a vacuum nozzle. An adjustable mounting bracket has a first portion fixed to the vacuum head and a second portion securable to the welding head. The bracket arrangement establishes pivotal and slidable couplings between the welding head and the vacuum head. The vacuum nozzle has a support surface for being rested on a surface of a workpiece to support the vacuum head and the welding head. The support surface can be a base bevel surface at the tip of the nozzle, and an opposed suction bevel surface can have a nozzle aperture interposed therealong.

CO2 GLOBULAR TRANSFER

The invention described herein generally pertains to a system and method for generating a negative polarity welding output current waveform to control a welding process. An electric arc welding system generates an electric welding waveform with portions in a negative polarity. A cycle of the electric welding waveform includes a background current phase, a short clearing ramp phase after the background current phase, a peak current phase, and a tail-out current phase of the electric welding waveform, wherein the peak current phase provides a negative peak current level, the tail-out current phase provides a monotonically increasing tail-out current level toward the positive background current level, and the short clearing ramp phase provides a decreasing current level in a positive polarity of current for the electric welding waveform. 1. A method of promoting droplet transfer of a welding system , comprising:regulating an output current level of a waveform to a positive polarity background current level to sustain an electric arc between an electrode and a workpiece, producing a molten metal ball on a distal end of the electrode;dropping the output current level below the positive polarity background current level in response to the molten metal ball shorting to the workpiece and extinguishing the electric arc to allow the molten metal ball to wet into a puddle on the workpiece;automatically further decreasing the output current level into a negative polarity below the positive polarity background current level to induce the molten metal ball to pinch off from the distal end of the electrode;increasing the output current level within the negative polarity toward the positive polarity background current level as the molten ball pinches off from the distal end of the electrode onto the workpiece to re-establish an electric arc between the electrode and the workpiece;decreasing the output current level within the negative polarity away from the positive polarity ...

WELD BANK DATA STRUCTURES FOR WELDING APPLICATIONS

A data structure for weld programs associates configuration data for a welding system with a plurality of weld programs and weld sequence data. The data structure allows the welding system to be configured for a particular part, operator, or stage in a welding process, and to be easily reconfigured when the part, operator, or stage changes, providing improved efficiency and flexibility in operation. 2. The memory as recited in claim 1 , wherein the weld system configuration selection includes data defining at least one of a semi-automatic claim 1 , automatic claim 1 , and robotic welding configuration for the computerized welding system.3. The memory as recited in claim 1 , wherein the welding process program selection includes data for defining at least one of a metal inert gas claim 1 , pulsed metal inert gas claim 1 , short circuit metal inert gas and a regulated metal deposition process performed by the computerized welding system.4. The memory as recited in claim 1 , wherein the welding process program selection includes data defining at least one of a wire type claim 1 , a wire alloy claim 1 , a material claim 1 , a material thickness claim 1 , and a gas.5. The memory as recited in claim 1 , wherein the weld sequence includes data for defining at least one of a pre-flow period claim 1 , a run-in time claim 1 , an arc start claim 1 , a weld start claim 1 , a weld ramp claim 1 , a weld claim 1 , a crater fill claim 1 , an arc stop claim 1 , a burnback claim 1 , and a post-flow sequence.6. The memory as recited in claim 1 , wherein the welding process command parameter comprises at least one of a voltage claim 1 , a wire feed speed claim 1 , and a trim command level for the computerized welding system.7. The memory as recited in claim 1 , wherein the weld configuration selection includes an operator configuration.8. The memory as recited in claim 6 , wherein the operator configuration comprises at least one of a trigger hold selection and a dual-schedule ...

Systems and methods for low-manganese welding wire

The invention relates generally to welding and, more specifically, to welding wires for arc welding, such as Gas Metal Arc Welding (GMAW) or Flux Core Arc Welding (FCAW). In one embodiment, a tubular welding wire includes a sheath and a core. The tubular welding wire is configured to form a weld deposit on a structural steel workpiece, wherein the weld deposit includes less than approximately 2.5% manganese by weight.

WELDER HAVING FEEDBACK CONTROL

A method and apparatus for improving the flow control of a shielding gas in a welding unit is described which uses feedback from at least one of a mass flow controller, a pressure sensor and a valve position sensor to regulate shielding gas flow through a controller. 1. A welding system comprising:a shielding gas input;a shielding gas output coupled to a welding gun having a trigger; anda feedback control system for at least said shielding gas comprising:a mass flow sensor for measuring flow between said shielding gas input and said shielding gas output; anda valve for regulating flow between said shielding gas input and said shielding gas output.2. The welding system of wherein said valve further comprises a valve position sensor for communicating a valve position to a controller based upon valve position output from a valve position sensor.3. The welding system of whereinsaid controller interactively controls said valve position.4. The welding system of whereinsaid controller includes an alarm for indicating when feedback from said valve position is different than said valve position output.5. The welding system of whereinsaid feedback control system further comprises a pressure sensor for determining the pressure of the flow and communicating said pressure to said controller for adaptive preflow control.6. The welding system of whereinsaid feedback control system analyzes signals from at least two of said flow sensor, said pressure sensor, and said valve position sensor and adjusts said shielding gas output based on said at least two signals.7. The welding system of whereinsaid feedback control system analyzes signals from all of said flow sensor, said pressure sensor, and said valve position sensor and adjusts said shielding gas output based on said three signals.8. A method of providing a targeted shielding gas flow rate to a weld site claim 6 , said weld site comprising a gas input claim 6 , an electrical input claim 6 , a wire feeder claim 6 , a welding gun ...

CONTACT TIP ASSEMBLY FOR A WELDING TORCH

A securement member for securing a contact tip to a welding torch assembly is provided. A channel extends axially therethrough and has an internal shoulder that extends into this channel. This internal shoulder abuts against a shoulder on the contact tip, capturing the contact tip between the shoulder and a seating surface on the diffuser and securing the contact tip in the torch assembly. The contact tip is securely seated without threading engagement, facilitating quick release and installation. The exemplary securement member couples to the diffuser such that the egress of fluid from the diffuser is blocked when used for gasless welding. This blocking allows a user to leave the diffuser secured to the welding torch when a gasless electrode is in use. 1. A securement mechanism for a contact tip of a welding torch assembly , comprising:a body comprising an electrically insulated material and having a channel extending therethrough and configured to receive a diffuser of a welding torch, and an internal shoulder extending into the channel and configured to engage a contact tip to seat the contact tip with respect to a contact tip seating surface of the welding torch.2. The securement mechanism of claim 1 , wherein the internal shoulder comprises a metallic member.3. The securement mechanism of claim 2 , wherein the metallic member comprises a plurality of ribs extending axially along an external surface of the metallic member.4. The securement mechanism of claim 1 , wherein the channel is defined by a first opening having a first width and a second opening having a second width less than the first width.5. The securement mechanism of in claim 1 , wherein the body is generally cylindrical.6. The securement mechanism of claim 1 , wherein the body includes a threaded portion for threaded engagement on the welding torch.7. The securement mechanism of claim 6 , wherein the threaded portion is configured for threaded engagement with a diffuser of the welding torch ...

MIG/MAG WELDING OF STAINLESS STEELS WITH ROTARY ARC AND AR/HE/CO2 GASEOUS MIXTURE

The invention concerns a MIG/MAG-type electric arc welding method that uses a consumable filler wire and gas protection formed by a ternary gaseous mixture comprising 19 to 21% helium, 0.8 to 1.2% CO2 and argon for the remainder (% of volume), in order to weld one or more pieces of stainless steel. According to the invention, the arc is rotary, the consumable filler wire is melted by the arc such as to transfer metal by means of a rotating liquid flow, and the welded parts comprise overlapping ends. 1. An electric arc welding process of MIG/MAG type with use of a consumable filler wire and gas shielding formed of a ternary gas mixture consisting of 19 to 21% of helium , of 0.8 to 1.2% of COand of argon for the remainder (% by volume) in order to weld one or more parts made of stainless steel , wherein the arc is a rotating arc , the consumable filler wire is melted by the arc , so as to obtain transfer of metal by a rotating liquid vein , and the welded parts comprise ends which overlap each other.2. The process of claim 1 , wherein the gas mixture comprises at least 19.5% of helium.3. The process of claim 1 , wherein the gas mixture comprises at most 20.5% of helium.4. The process of claim 1 , wherein the gas mixture comprises at least 0.9% of CO.5. The process of claim 1 , wherein the gas mixture comprises at most 1.10% of CO.6. The process of claim 1 , wherein the gas mixture comprises from 17.95 to 18.05% of helium claim 1 , from 0.98 to 1.02% of COand argon for the remainder.7. The process of claim 1 , wherein the gas mixture is composed of 20% of helium claim 1 , of 1% of COand of 79% of argon.8. The process of claim 1 , wherein the welded parts comprise cylindrical ends which overlap each other.9. The process of claim 1 , wherein the welded parts are constituent components of a pressure vessel of the following types: hot water tanks claim 1 , extinguishers claim 1 , compressors claim 1 , refrigeration devices or gas cylinders. This application is a 371 of ...

MIG WELDING METHOD AND MIG WELDING DEVICE

Two welding wires whose current values are individually variable are placed along a groove of steel plates, and two operations are repeated, the first operation including: passing substantially the same current through both welding wires; generating a cathode spot in front of a molten pool by one welding wire's arc on a welding-direction forward side; and cleaning the steel plates' surfaces by the arc, and the second operation including: passing a pulse current having a higher value than that of the welding wire through the other welding wire, so that a cathode spot is generated in the molten pool by each welding wire's arc to newly form a molten pool; and advancing both welding wires in the welding direction to move the cathode spot to the newly-formed molten pool, and at the same time performing welding within an area where oxides on the steel plates' surfaces are removed. 1. A MIG welding method that forms a molten pool on a metal member to be welded , the MIG welding method comprising:placing a pair of MIG electrodes whose current values are individually variable and that include at least one MIG electrode through which a pulse current is passed; andrepeating a first operation and a second operation, the first operation including passing a current having substantially the same current value through the pair of MIG electrodes while the pair of MIG electrodes is moved in a welding direction, so that an arc of a first MIG electrode of the pair of MIG electrodes generates a cathode spot in front of the molten pool in a moving direction, and the arc removes an oxide on a surface of the metal member to be welded, and the second operation including: passing a pulse current having a higher current value than that of the first MIG electrode through a second MIG electrode of the pair of MIG electrodes, so that cathode spots are each generated within the molten pool to newly form a molten pool; and performing welding within an area while a cathode spot is moved to the ...

SYSTEM AND METHOD FOR HOT WIRE ARC STEERING

The invention described herein generally pertains to a system and method related to influencing a direction of an arc within a welding operation. Within a hot wire welding operation, an arc is generated between an electrode and a workpiece and a welding wire is energized while being supplied to a puddle formed by the electrode in order to deposit the liquefied welding wire onto the workpiece. A welder system and/or method is provided that controls a direction of the arc based on at least one of a polarity of the welding wire (via a power supply that energizes the welding wire), a location of the welding wire in proximity to the arc, a synchronization and/or de-synchronization of a polarity of the welding wire with the electrode, an activation and/or a de-activation of energizing of the welding wire, or a combination thereof. 1. A welder system , comprising:a welding torch that includes an electrode;a power source that creates an arc between the electrode and the workpiece;a wire feeder that is connected to a supply of welding wire to provide a welding wire to a puddle formed by the electrode, wherein the arc is a first polarity; anda welding wire power source that energizes the welding wire with at least one of the first polarity or a second polarity thereby influencing a direction of the arc; anda controller that influences a direction of the arc with at least one of a strength or a polarity of the energized welding wire via the welding wire power source, wherein a magnitude of the direction is controlled by a magnetic field of the welding wire and the magnetic field is controlled by a current in the welding wire via the welding wire power source.2. The welder system of claim 1 , wherein the arc is created from at least one of a gas metal arc welding (GMAW) in which the electrode is a positive polarity or a gas tungsten arc welding (GTAW) in which the electrode is a negative polarity.3. The welder system of claim 1 , further comprising at least one of following:the ...

HYBRID WELDING METHOD AND WELDING TORCH FOR HYBRID WELDING

A hybrid welding method capable of improving arc stability and improving the welding speed and the welding efficiency is provided. A hybrid welding method includes generating a TIG arc on a leading side in a welding direction and generating a MIG arc on a trailing side in the welding direction to weld a base metal, in which a TIG current is set to be higher than a MIG current so as to continuously generate arcs in a TIG electrode and a MIG electrode, and an absolute value of a distance from an intersection between a central axis of the TIG electrode and a surface of the base metal to an intersection between a central axis of the MIG electrode and the surface of the base metal is 20 mm or less.

BUTT JOINT WELDING APPARATUS AND METHOD THEREFOR

A butt joint welding apparatus and method are provided. The apparatus comprises a traveling device part to convey a welding tip vertically or slantingly to the bevel of upper and lower parent metal. A welding torch with a welding tip is mounted in the traveling device part. A copper shoe device is mounted in the traveling device part and positioned in the direction of welding by the welding tip for ejecting a gas to the molten metal in the direction reverse to the welding direction. A control unit controls the welding condition according to the positions of the bevels of the butt joint welding. The control unit enables the traverse device part to be conveyed along a particular weaving pattern, and controls the welding current and voltage, the wire supply speed, the traverse speed, and the stopping time at the nodal points in the moving interval between adjacent nodal points. 1. A horizontal butt joint welding apparatus comprising:a traveling device part to convey a welding tip vertically or slantingly to bevels of an upper parent metal and a lower parent metal;a welding torch comprising a welding tip and mounted in the traveling device part;a copper shoe device mounted in the traveling device part and located in a welding direction by the welding tip to inject a gas to a molten metal in a reverse direction to the welding direction;a control unit to control welding conditions according to positions of the bevels to maintain a fixed deposition amount on the upper parent metal not to form a macro cross section on which a welded side is not formed; andwherein the control unit enables the traveling device part to be conveyed along a particular weaving pattern including weaving traveling having a plurality of nodal points and diagonal traveling and controls welding current and voltage, wire supply speed, traveling speed, and stopping time at the nodal points in moving intervals between the nodal points to carry out deposited welding of the bevels.2. The horizontal butt ...

SYSTEM AND METHOD LOW HEAT WELD

A method for low heat welding includes providing short circuit pulse Metal Inert Gas (MIG) welding at less than a rate of about a twenty (20) inch a minute travel speed. 1. A method for low heat welding comprising:providing short circuit pulse Metal Inert Gas (MIG) welding at less than a rate of about a twenty (20) inch a minute travel speed.2. The method as recited in claim 1 , further comprising:providing an about 100% argon shielding gas for the short circuit pulse Metal Inert Gas (MIG) welding.3. The method as recited in claim 1 , further comprising:providing an about 99.75% argon and an about 0.25% carbon dioxide shielding gas for the short circuit pulse Metal Inert Gas (MIG) welding.4. The method as recited in claim 1 , further comprisingproviding short circuit pulse Metal Inert Gas (MIG) welding at a rate of 5-15 inch a minute travel speed.5. The method as recited in claim 1 , further comprisingproviding short circuit pulse Metal Inert Gas (MIG) welding at a rate of 5 inch a minute travel speed.6. A method for repairing an aerospace component comprising:removing material on an aerospace component to provide a consistent surface; andbuilding-up material on the consistent surface via short circuit pulse Metal Inert Gas (MIG) welding at less than a rate of a twenty (20) inch a minute travel speed to provide a weld buildup.7. The method as recited in claim 6 , further comprising:machining the weld buildup to original nominal dimensions of the aerospace component.8. The method as recited in claim 6 , wherein the aerospace component is a knife edge.9. The method as recited in claim 6 , further comprising:providing an about 100% argon shielding gas for the short circuit pulse Metal Inert Gas (MIG) welding.10. The method as recited in claim 6 , further comprising:providing an about 99.75% argon and an about 0.25% carbon dioxide shielding gas for the short circuit pulse Metal Inert Gas (MIG) welding.11. The method as recited in claim 6 , wherein the aerospace ...

Arc welding device and method

A plasma ejection unit ( 21 ) of an arc welding device includes a plasma torch ( 26 ), a copper plate ( 27 ), a container ( 28 ), and a gas supplying unit ( 29 ). Plasma gas inside the container ( 28 ) is pressurized by argon gas supplied from the gas supplying unit ( 29 ), and ejected from first to eighth ejection ports. The plasma gas ejected from the first to eighth ejection ports is concentrated in a concentration area (CA) between vehicle body plates ( 16 - 17 ) to form through holes ( 40 ) in the vehicle body plates ( 16 - 17 ), and is separated. The air pressures, in eight areas, of the plasma gas reaching a vehicle body plate ( 18 ) are approximately one-eighth of the air pressure of the plasma gas in the concentration area (CA). Accordingly, while the through holes ( 40 ) are formed in the vehicle body plates ( 16 - 17 ), no through hole is formed in the vehicle body plate ( 18 ).

DEVICE AND METHOD FOR MEASURING THE OXYGEN CONTENT IN WELDING PROCESSES

The invention relates to a device for measuring the oxygen content in welding processes, in particular shielded arc welding, the device having at least one sensor element for sensing the oxygen content of a shielding atmosphere. With the aim of providing a device for measuring the oxygen content in welding processes that provides stable measured values for the residual oxygen content even at very high temperatures of the welding process and is ready to use after a very short time, it is envisaged to design the sensor element as an optical oxygen sensor. 1. A device for measuring the oxygen content in welding processes , in particular shielded arc welding , the device having at least one sensor element for sensing the oxygen content of a shielding atmosphere , characterized in that the sensor element is designed as an optical oxygen sensor.2. The device as claimed in claim 1 , the optical oxygen sensor having a fluorescing medium claim 1 , which can be brought into contact with the shielding atmosphere and is designed for emitting fluorescent light claim 1 , the intensity of the emitted fluorescent light being dependent on the oxygen partial pressure in the shielding atmosphere.3. The device as claimed in claim 2 , the optical oxygen sensor having at least one device for optically exciting the fluorescing medium and at least one optical detector for sensing electromagnetic radiation that is given off by the fluorescing medium as a result of a deactivation process.4. The device as claimed in claim 3 , the device for exciting the fluorescing medium being designed to give off an excitation pulse to the fluorescing medium at previously determinable time intervals.5. The device as claimed in claim 3 , the device having an evaluation unit claim 3 , which is connected to the optical detector and is designed for determining the intensity or the decay behavior of the fluorescent radiation of the fluorescing medium.6. The device as claimed in claim 5 , the evaluation unit ...

METHOD FOR MANUFACTURING ENERGY STORAGE DEVICE AND APPARATUS FOR MANUFACTURING ENERGY STORAGE DEVICE

In a method for manufacturing an energy storage device by applying welding to a container of the energy storage device, the method includes: arranging a jig on which wall surfaces are formed between two parts to be welded to which welding is applied; and welding the two parts to be welded while supplying a shield gas to the two parts to be welded from two different directions corresponding to the two parts to be welded. 1. A method for manufacturing an energy storage device by applying welding to a container of the energy storage device , the method comprising:arranging a jig on which a wall surface is formed between two parts to be welded to which welding is applied; andapplying welding to the two parts to be welded while supplying a shield gas to the two parts to be welded from two different directions corresponding to the two parts to be welded.2. The method for manufacturing an energy storage device according to claim 1 , wherein in the welding claim 1 , the shield gas supplied to the part to be welded flow along an inclined surface which is at least a portion of the wall surface.3. The method for manufacturing an energy storage device according to claim 1 , wherein in the arranging claim 1 , the jig is arranged in a state where the jig is brought into contact with the container.4. The method for manufacturing an energy storage device according to claim 1 , further comprising cooling the jig.5. The method for manufacturing an energy storage device according to claim 1 , wherein in the welding claim 1 , welding is applied to the two parts to be welded by irradiating a laser beam toward the two parts to be welded from a predetermined position while changing an irradiation angle.6. An apparatus for manufacturing an energy storage device for applying welding to a container of the energy storage device claim 1 , the apparatus comprising a jig on which a wall surface is formed and which is arranged between two parts to be welded to which welding is applied and to ...

Method for tungsten inert gas welding

The invention relates to a method and a welding torch for gas tungsten arc welding, wherein an electric arc burns between a non-consumable electrode ( 110 ) and a workpiece ( 151 ). The interior of the electrode ( 110 ) has a cavity ( 200 ) through which an electrically conducting filler ( 210 ) is fed in the direction ( 230 a ) of the workpiece ( 151 ), said filler ( 210 ) being energized.

ELECTROSPARK DEPOSITION SYSTEM FOR REPAIR OF GAS TURBINE

A system and method for repairing a metal substrate includes an electrospark device and an electrode removably supported in the electrode holder. The electrospark device applies a coating of a material when placed into contact with the metal substrate. A cooling device to lowers the temperature of shielding gas flow below an ambient temperature. A conduit is arranged to direct a flow of the shielding gas to the interface of the electrode and the substrate to cool the area of the substrate receiving the coating. 1. A system for repairing a metal substrate comprising:an electrospark device including an electrode holder and a consumable electrode removably supported in the electrode holder, the electrospark device being arranged and disposed to establish a continuous spark between the consumable electrode and the substrate and continuously deposit an alloyed coating until a desired coating thickness is obtained;a cooling device configured to lower the temperature of a shielding gas flow below an ambient temperature; anda conduit arranged and disposed to receive the shielding gas flow from the cooling device and direct the shielding gas flow at an interface of the consumable electrode and the substrate.2. The system of claim 1 , wherein the interface is located at the point of contact of the consumable electrode with the substrate where an electrospark is generated.3. The system of claim 1 , wherein the consumable electrode is secured to a nozzle tip under an applied torque to establish the continuous spark between the consumable electrode and the substrate to build up a surface of the substrate.4. The system of claim 1 , wherein the substrate is mounted in a rotatable positioner.5. The system of claim 4 , wherein the rotatable positioner has a rotary speed adjustment.6. The system of claim 1 , wherein the electrode holder is rotatable.7. The system of claim 6 , wherein a rotational speed of the electrode holder is adjustable.8. The system of claim 1 , wherein the ...

WELDING GUN HAVING NON-THREADING CONTACT TIP

A welding gun adapted to secure a contact tip within the welding gun without threading the contact tip and without the use of tools. The contact tip may be adapted to abut a surface of a first member disposed within the welding gun. The surface may be a surface of a gas diffuser. The surface may be adapted to abut the contact tip. The contact tip also may be adapted for abutment with a second member to urge the contact tip toward the first member. The second member may be a portion of a nozzle adapted to abut the contact tip to urge the contact tip toward the surface of the first member. A method of assembling a welding gun also is provided. The method may include disposing a contact tip between a first and a second member and capturing the contact tip between the first and second members. 1. A contact tip for a welding gun , comprising:an opening through the contact tip defining an axis through the contact tip;a first surface disposed around the opening at an axial end of the contact tip, and configured to abut a corresponding seating surface located on a first member of the welding gun; anda shoulder extending around at least a portion of the contact tip to enable a movable second member to urge the first surface against the corresponding seating surface of the first member.2. The contact tip of claim 1 , wherein the shoulder extends transversely to the opening through the contact tip.3. The contact tip of claim 1 , wherein the first surface is configured to form a seal with the corresponding seating surface of the first member.4. The contact tip of claim 1 , wherein the first surface comprises a curved surface and the corresponding seating surface of the first member comprises a corresponding curved surface.5. The contact tip of claim 1 , wherein the first surface comprises a conical surface and the corresponding seating surface of the first member comprises a corresponding conical surface.6. A contact tip for a welding gun claim 1 , comprising:a shoulder ...

CONTROL HEAD AND MAGNETIC HOLDER FOR AUTOMATIC WELDING

Double magnetic coupling for two welding heads that work parallel and independent at the front and at the back, (N) and (S), in paramagnetic and diamagnetic materials. 1) A system for welding , comprising:a control head and magnetic holder, comprising:an outer side, comprising: a first magnet, a torch, a first gas duct, a first pipeline for cooling, an external mechanical support, means for welding control, and a first gas diffuser; andan inner side, comprising: a second magnet, a second gas diffuser, a second gas duct, a second pipeline for cooling, and means for translation; andwherein said outer and inner sides are magnetically coupled.2) The system of claim 1 , wherein the outer side comprises means to control the displacement of the first magnet.3) The system of claim 2 , wherein the outer side comprises means for visual inspection.4) The system of claim 2 , wherein the inner side comprises means for translation.5) The system of claim 2 , wherein the torch is selected from the group of welding instruments consisting of tungsten electrodes claim 2 , MIG claim 2 , laser claim 2 , plasma and hybrid.6) The system of claim 3 , wherein the inner side comprises means for translation.7) The system of wherein plates to be welded are placed between the outer and inner sides of the control head.8) The system of claim 2 , wherein the inner side comprises means to control the displacement of the second magnet.9) The system of claim 1 , wherein the inner side comprises means to control the displacement of the second magnet.10) The system of claim 1 , wherein the inner side comprises means for translation.11) A system for welding claim 1 , comprising:a control head and magnetic holder, comprising:an outer side, comprising: a first magnet, a first torch, a first gas duct, a first pipeline for cooling, an external mechanical support, means for welding control, and a first gas diffuser; andan inner side, comprising: a second magnet, a second torch, a second gas diffuser, a ...

FORMING DEVICE AND METHOD FOR SUPPLYING AT LEAST ONE ROOT PROTECTION GAS

The invention relates to a forming device () for supplying at least one root protection gas to the root side of at least one region () of at least one pipe () to be connected, comprising at least one root protection gas supply device () for supplying the root protection gas and comprising at least one root protection gas conducting device () for conducting or deflecting the supplied root protection gas in an axial direction along the inner wall of the pipe () along the root side of the region () to be connected, wherein the root protection gas conducting device () has a cylindrical shape and can be inserted into the pipe () in a centered manner, and the root protection gas supply device () is arranged within the root protection gas conducting device (). The invention additionally relates to a method for forming or supplying at least one root protection gas to the root side of at least one region () of at least one pipe () to be connected. The supplied root protection gas is guided, conducted, or deflected in the direction along the inner face of the pipe () along the root side of the region to be connected, and the root protection gas is additionally guided in the radial direction such that when the pipe region is connected to a pipe bend (), the root protection gas is guided along the curvature of the pipe bend () in the axial direction. 12001110220210101121010220210. Forming device () for supplying at least one root protection gas to the root side of at least one region () to be connected of at least one pipe () and for supplying the root protection gas along a curvature of the pipe bend in the axial direction , comprising at least one root protection gas supply device () for supplying the root protection gas and comprising at least one root protection gas conducting device () for guiding or deflecting the supplied root protection gas in the axial direction along the inner wall of the pipe () along the root side of the region () to be connected , wherein the root ...

METHOD FOR WELDING ZINC PLATED STEEL PLATE

A method for welding a galvanized steel sheet includes utilizing a pulse welding of repeatedly applying a pulse peak current and a base current, setting a welding speed to 100 cm/min or less, and using a shielding gas in which 1 vol % or more and 10 vol % or less of at least either one of COand Ois added to Ar. The pulse peak current has a pulse peak time being in a range of 7% or more and less than 50% of one period depending on a sheet thickness of the galvanized steel sheet. 1. A method for welding a galvanized steel sheet , comprising utilizing a pulse welding of repeatedly applying a pulse peak current and a base current , setting a welding speed to 100 cm/min or less , and using a shielding gas in which 1 vol % or more and 10 vol % or less of at least either one of COand Ois added to Ar , wherein:the pulse peak current has a pulse peak time being in a range of 7% or more and less than 50% of one period depending on a sheet thickness of the galvanized steel sheet;in a case where the sheet thickness is 0.8 mm or more and less than 1.6 mm, the pulse peak time has a lower limit value of 7% or more of the one period and the pulse peak time has an upper limit value of less than 15% of the one period;in a case where the sheet thickness is 1.6 mm or more and less than 2.3 mm, the pulse peak time has a lower limit value of 15% or more of the one period and the pulse peak time has an upper limit value of less than 30% of the one period; andin a case where the sheet thickness is 2.3 mm or more and less than 3 mm, the pulse peak time has a lower limit value of 20% or more of the one period and the pulse peak time has an upper limit value of 40% or less of the one period.2. The welding method of a galvanized steel sheet according to claim 1 , wherein the shielding gas comprises 8 vol % or less of COor O.3. The welding method of a galvanized steel sheet according to claim 1 , wherein:in a case where the sheet thickness is 0.8 mm or more and less than 1.6 mm, a welding wire ...

CONTACT TIP FOR USE IN GAS METAL-ARC WELDING

A contact tip () for gas metal-arc welding comprising: 110-. (canceled)11. A contact tip for use in gas metal-arc welding , said contact piece comprising:a body comprising an electrically conductive metal material, which body has a tubular base portion and two or more fingers connected to the base portion and extends in the axial direction from a front end of the base portion;at least one wire-feed conduit extending axially through the body in which a welding wire is to be received and advanced, said wire-feed conduit having an inlet opening at the rear end of the contact tip and an outlet port at the front end of the contact tip between the said fingers, andslots arranged in the body between said fingers in order separate these from one another, whereby each slot extends in the axial direction from the body's base portion and to the said outlet port;wherein the contact tip includes a spring surrounding the finger and arranged to exert a radial force on the fingers so that the fingers, when cool, are spaced apart such that they will not exert pressure against the casing surface of a welding wire introduced in the wire-feed conduit, and when heated to a temperature above the softening temperature of the metal material, are compressed by the spring force radially inward to exert pressure against the casing surface of a welding wire introduced in the wire-feed conduit.12. A contact tip according to claim 11 , wherein the spring is disposed a groove disposed on the outside of the figures.13. A contact tip according to claim 11 , wherein the spring means consists of a volute spring in the shape of an open ring.14. A contact tip according to claim 11 , wherein the spring means consists of a coil spring.15. A contact tip according to claim 11 , wherein the spring means consists of a bimetallic element16. A contact tip according to claim 11 , wherein the spring means is made of a metallic spring material with a softening temperature above the softening temperature of the ...

Hybrid Hot-Wire And Arc Welding Method And System Using Offset Positioning

A method and system to weld or join coated workpieces using an arc welding operation and at least one hot wire, resistance heated wire. Each of the arc welding and hot wire operation are directed to the same puddle. However, the arc welding operation is offset out of the joint from the hot wire operation, where the hot wire is directed into the joint. 1. A welding system , comprising:an arc generating power supply which provides an arc generation signal to an electrode to generate an arc between said electrode and at least one workpiece so as to create a molten puddle on said at least one workpiece, where said arc generation signal comprises a plurality of current pulses;a hot wire power supply which generates a heating signal to heat at least one consumable such that said consumable melts in said molten puddle when said consumable is in contact with said molten puddle, where said heating signal comprises a plurality of heating current pulses; anda controller which synchronizes both of said arc generation signal and said heating signal such that a constant phase angle is maintained between said current pulses of said arc generation signal and said heating current pulses,wherein each of said electrode and said consumable are moved in a travel direction relative to said at least one workpiece, and where said electrode is offset from consumable in a direction normal to said travel direction; andwherein at least one of said hot wire power supply and controller monitors a feedback related to said heating signal and compares said feedback to an arc generation threshold and said hot wire power supply turns off said heating signal when said feedback reaches said arc generation threshold level.2. The system of claim 1 , wherein said phase angle is in the range of 340 to 20 degrees.3. The system of claim 1 , wherein said electrode is offset from said consumable by a distance in the range of 2 to 5 mm.4. The system of claim 1 , wherein a ratio of heat input into said puddle ...

HYBRID MIG-TIG OR MAG-TIG WELDING DEVICE

A hybrid MIG-TIG or MAG-TIG welding device including a MIG or MAG welding torch utilizing a consumable wire oriented in a first direction, associated with a TIG welding torch utilizing a non-consumable electrode oriented in a second direction, said first and second directions being substantially coplanar and forming between themselves an angle (α) no less than 5° and no greater than 40° is provided. 119-. (canceled)20. A hybrid MIG-TIG or MAG-TIG welding device comprising ,a MIG or MAG welding torch utilizing a consumable wire oriented in a first direction, associated with a TIG welding torch utilizing a non-consumable electrode oriented in a second direction, said first and second directions being substantially coplanar and forming between themselves an angle (a) no less than 5° and no greater than 40°, a first position in which the end of the non-consumable electrode is located at a first distance away from the first direction, and', 'a second position in which the end of the non-consumable electrode is located at a second distance away from the first direction, the second distance being greater than the first distance., 'a torch assembly shoe suitable and designed for allowing a positioning of the TIG welding torch in at least two predefined positions relative to the MIG or MAG welding torch, comprising21. The device according to claim 20 , wherein the assembly shoe further comprises:an axial lodging traversing the shoe in the first direction, inside which is arranged the MIG or MAG welding torch,a first lateral lodging traversing the shoe in which the TIG welding torch is arranged when positioned in the first position, anda second lateral lodging traversing the shoe in which the TIG welding torch is arranged when positioned in the second position.22. The device according to claim 20 , wherein the first distance is between 20 and 26 mm.23. The device according to claim 20 , wherein the second distance is between 36 and 44 mm.24. The device according to claim 20 , ...

WELDING POWER SOURCE, WELDING SYSTEM, WELDING POWER SOURCE CONTROL METHOD, AND PROGRAM

A welding power source is configured to supply a welding current to a wire as a consumable electrode. The welding power source includes a controller configured to change the welding current based on a position of a distal end of the wire a distance from which to a surface of a base metal varies periodically, in a case where the distal end of the wire is fed toward the base metal with periodical switching between a forward feeding period and a reverse feeding period. 1. A welding power source configured to supply a welding current to a wire as a consumable electrode , the welding power source comprising:a controller configured to change the welding current based on a position of a distal end of the wire a distance from which to a surface of a base metal varies periodically, in a case where the distal end of the wire is fed toward the base metal with periodical switching between a forward feeding period and a reverse feeding period.2. The welding power source according to claim 1 , wherein the controller is configured to determine the position of the distal end of the wire based on a command value of a feeding speed of the wire.3. The welding power source according to claim 1 , wherein in a case where the position of the distal end of the wire that varies periodically is between a position defined by ½ of a wave height defined by an upper point and a lower point of a variation range and a position closer to the base metal than the position defined by ½ of the wave height claim 1 , the controller is configured to start a low-current period during which the welding current is lower than a predetermined current value.4. The welding power source according to claim 3 , wherein the low-current period is started within a range that is from a position of the distal end of the wire at a time point at which a period during which the distal end of the wire is fed forward is switched to a period during which the distal end of the wire is fed reversely to a position of the distal ...

POWER ROUTING FOR WELDING SUITE

The invention described herein generally pertains to an apparatus for a welding operation having two or more welding tools and a switching device which directs the current to the appropriate welding device for a welding operation. One or more switch devices having two or more settings can be employed to control which device or devices receive current. Moreover, varying remote control techniques can be utilized to control a welding power source or other operatively coupled devices. Powered devices other than welding tools may be used with the switch in embodiments. 1. A system for controlling an electrical current o a first welding tool and a second welding tool , said system comprising:a welding power supply operatively coupled to supply welding power to the first welding tool and the second welding tool;a switch device operatively coupled to the welding power supply, the first welding tool, and the second welding tool, said switch device controlling the electrical current from the welding power supply to the at least one of the first welding tool and the second welding tool; anda control circuit communicatively coupled with the switch device, said control circuit automatically controlling the switching of the switch device between at least a first setting and a second setting,wherein when the switch device is in the first setting, a first current is directed to the first welding tool such that the second welding tool is electrically isolated from the first current and when the switch device is in the second setting, a second current is directed to the second welding tool such that the first welding tool is electrically isolated from the second current, andwherein the switch device is operatively coupled to the welding power supply using an integrated power cable.2. The system of claim 1 , wherein the control circuit is housed within the switch device.3. The system of claim 1 , wherein the switch device has a third setting which prevents either one of the first ...

INERT GAS AND METHOD OF METAL INERT-GAS WELDING FOR POLLUTANT REDUCTION

A method of metal inert-gas welding is proposed, a method in which a welding filler () is fed to a welding torch () and a welding current of a welding current source () is applied via a welding current connection (), whereby an arc () is formed and, in a welding region, material of the welding filler () is transferred to a workpiece () consisting at least in the welding region of an alloyed high-grade steel. By means of the welding torch (), an inert gas that includes a content of 0.5 to 3.0 percent by volume of at least one oxidizing component and a content of 0.1 to below 0.5 percent by volume of hydrogen is fed to the welding region. A method of reducing the content of nickel oxides and chromium (VI) compounds in welding fumes of such a welding method, a corresponding inert gas and the use of a gas mixture as an inert gas are likewise the subject of the present invention. 1. A method for metal inert gas welding , in which a weld filler is fed to a welding torch and via a welding current connection is subjected to a welding current of a welding current source , as a result of which an arc is formed and material of the weld filler in a welding region is transmitted onto a work piece which at least in the welding region consists of alloyed stainless steel and an inert gas is fed to the welding region by means of the welding torch , which inert gas has a content of 0.5 to 3.0% by volume of at least one oxidising component , characterized in that the inert gas additionally has a content of 0.1 to below 0.5% by volume of hydrogen.2. The welding method according to claim 1 , in which the inert gas has a content of 1.2 to 2.5% by volume of the at least one oxidising component.3. The welding method according to claim 1 , in which the inert gas has a content of 0.5 to 0.4% by volume of hydrogen.4. The welding method according to claim 1 , in which the inert gas in the remaining proportion contains argon and/or helium.5. The welding method according to claim 1 , in which a ...

WELD PROTECTING DEVICE BY GAS DIFFUSION

A weld protecting device by gas diffusion including several elements mounted one after the other and hinged to each other, and including a front element, intermediate elements mounted one after the other and behind the front element. A back element is mounted behind the last intermediate element, each element including a housing open downwards and towards each other adjacent element, forming a gas diffusion chamber, wherein two adjacent elements are hinged to each other and they are free to pivot relative to each other, regardless of the operating conditions of the protecting device. A facility for welding two opposite edges of two pieces, a weld protecting device, and a system for guiding the protecting device are disclosed. 1. A device for protecting a weld by gaseous diffusion including several elements mounted one after another and hinged to each other , and including , from a front end to a back end according to alignment of the elements:a front element to accommodate a welding head;intermediate elements mounted one after another and behind the front element,a back element mounted behind a last intermediate element,each element including a housing open downwards and towards each other adjacent element, all the housings forming a gas diffusion chamber which is connected to a protection gas supply source;wherein two adjacent elements are hinged to each other and are free to pivot relative to each other,and wherein the two adjacent elements are hinged to each other by a swivel connection, and are free to pivot relative to each other along any direction.2. The protecting device according to claim 1 , wherein a first element among the two adjacent elements includes a hemispherical shaped housing which is open towards the second element of the two adjacent elements and the second element includes an insert with a hemispherical shape complementary to the hemispherical housing of the first element claim 1 , and the insert is accommodated in the hemispherical housing of ...

WELDING DEVICE AND WELDING METHOD

A welding system includes a welding torch that welds a workpiece by using a wire, a suction device that sucks shielding gas, and a sucked shielding gas supply path for allowing the sucked shielding gas to flow, wherein the welding torch includes a contact chip that guides the wire, a shielding gas supply nozzle that supplies the shielding gas to a weld zone, and a suction nozzle that surrounds a periphery of the wire protruding from the contact chip, and is opened toward a tip of the wire to suck the shielding gas. 1. A welding method for performing welding while supplying shielding gas to a weld zone , the welding method comprising:sucking gas containing hydrogen source discharged from a welding wire, from an arc column and a periphery of the arc column, by using a suction nozzle, the arc column being generated at a periphery of the welding wire protruding from a contact chip and in a tip of the welding wire; andmixing the sucked gas with new shielding gas to perform welding.2. The welding method according to claim 1 , whereinthe welding wire is a flux cored wire containing fluoride.3. A welding device comprising:a contact chip that guides a welding wire, and supplies a welding current to the welding wire;a suction section that surrounds a periphery of the welding wire protruding from the contact chip, and is opened toward a tip of the welding wire to suck gas;a mixing section that mixes the gas sucked from the suction section with new shielding gas; anda shielding gas supply nozzle that supplies the gas mixed in the mixing section to a weld zone.4. The welding device according to claim 3 , whereinthe suction section sucks a hydrogen source discharged from the welding wire from an arc column generated at a periphery of the welding wire protruding from the contact chip and in a tip of the welding wire, thereby reducing a diffusible hydrogen amount in weld metal.5. The welding device according to claim 3 , whereinan ejector is provided as the suction section and the ...

WELDING PROCESS WIRE FEEDER ADAPTER

A welding system may include a welding power source that provides power for both a gas metal arc welding (GMAW) process and a gas tungsten arc welding (GTAW) process. Further, the welding system may include a wire feeder coupled to the welding power source for providing wire, gas flow, and electrical current flow for the GMAW process. Additionally, the welding system may include an adapter that couples to the wire feeder to provide the electrical current flow and the gas flow for the GTAW process.

WELDING PROCESS WIRE FEEDER ADAPTER

A welding system may include a wire feeder configured to receive power from a welding power supply. The wire feeder may also be configured to provide wire, gas flow, and electrical current flow for a gas metal arc welding (GMAW) process. Further, the welding system may include an adapter that couples to the wire feeder to provide the gas flow for an alternative welding process. 1. A welding system , comprising:a wire feeder configured to receive power from a welding power supply and to provide wire, gas flow, and electrical current flow for a gas metal arc welding (GMAW) process; andan adapter configured to couple to the wire feeder to provide the gas flow for an alternative welding process.2. The welding system of claim 1 , wherein the wire feeder comprises a wire drive assembly to facilitate feeding the wire to a GMAW torch claim 1 , and wherein the adapter is configured to couple to the wire feeder within the wire drive assembly during the alternative welding process.3. The welding system of claim 1 , wherein the alternative welding process comprises a gas tungsten arc welding (GTAW) process claim 1 , a shielded metal arc welding (SMAW) process claim 1 , or a plasma welding process.4. The welding system of claim 3 , wherein the wire feeder is configured to provide electrical current flow to the alternative welding process claim 3 , and wherein the welding power supply is configured to supply sufficient power to the wire feeder to perform the GTAW process claim 3 , the SMAW process claim 3 , and the plasma welding process.5. The welding system of claim 1 , wherein a first cable of a GMAW torch and a second cable of an alternative welding process torch or electrode holder are configured to couple to the wire feeder in substantially the same location of the wire feeder via the adapter.6. The welding system of claim 5 , wherein the second cable couples to the adapter at a first end of the second cable and couples to the alternative welding process torch or electrode ...

ELECTRODE DIAMETER SENSING CONSUMABLES

Electrode diameter sensing consumables are disclosed. An example shielded metal arc welding (SMAW) torch comprises: a handle; a clamp coupled to the handle configured to open and close to hold a SMAW electrode, the clamp comprising a pivot configured to rotate based on a degree of openness of the clamp; and a potentiometer coupled to the pivot such that an output of the potentiometer is representative of a degree of rotation of the pivot 1. A shielded metal arc welding (SMAW) electrode holder , comprising:a handle;a clamp coupled to the handle configured to open and close to hold a SMAW electrode, the clamp comprising a pivot configured to rotate based on a degree of openness of the clamp; anda potentiometer coupled to the pivot such that an output of the potentiometer is representative of a degree of rotation of the pivot.2. The SMAW electrode holder of claim 1 , further comprising a spring configured to exert a force to provide a closing tendency to the clamp.3. The SMAW electrode holder of claim 1 , wherein the potentiometer is configured to claim 1 , when a first signal is applied to the potentiometer claim 1 , output a second signal representative of a size of an electrode held by the clamp.4. A welding system claim 1 , comprising:a material sensing and control system configured to receive an output from a potentiometer of a shielded metal arc welding (SMAW) electrode holder and to determine an electrode size based on the output; and determine, based on the electrode size, at least one of an arc starting parameter or a welding parameter; and', 'control the welding system to implement the determined arc starting parameter or the welding parameter., 'a controller configured to5. The welding system of claim 4 , wherein the material sensing and control system is configured to receive the output from the potentiometer continuously.6. The welding system of claim 4 , wherein the material sensing and control system is configured to receive the output from the ...

Welding device, and welding method employing welding device

A welding device for gas shielded arc welding includes: a portable welding robot mounted with a welding torch including a nozzle that guides jetting of shielding gas and a contact tip that performs energization on a consumable electrode; a feeding device that supplies the consumable electrode to the welding torch; a welding power source that supplies electric power to the consumable electrode via the contact tip; a gas supply source that supplies the shielding gas to be jetted from a nozzle end; and a control device that controls the portable welding robot. When the welding torch is seen from a side of jetting of the shielding gas, the contact tip is placed in an inside of an opening of the nozzle, the nozzle and the contact tip have a relatively movable structure, and an inner diameter of the nozzle end is within a range of 10-20 mm.

Process and apparatus for welding workpiece having heat sensitive material

Process and apparatus for welding workpiece have heat sensitive material are proposed. The heat sensitive material includes austenitic manganese steel, also referred to as Hadfield manganese steel. The process reciprocates filler metal in and out of weld pool. The motion of the filler metal may be synchronized with waveform of power source. Welding parameters are adjusted such that weld may be performed on the workpiece without cracking the heat sensitive material. The process allows Hadfield manganese steel to be welded to generator components in power generation applications. The process provides reliable and repeatable welding quality.

Apparatus for feeding welding wire and process gas to a welding device

The invention relates to an apparatus for feeding welding wire and process gas to a welding device comprising a wire feeding nozzle ( 1 ), which has a welding wire channel ( 4 ), a nozzle block ( 2 ), which is releasably connected to the wire feeding nozzle ( 1 ), a profile ( 3 ), which is releasably or fixedly connected to the nozzle block ( 2 ), has a welding wire channel ( 6 ) and can be connected to a welding wire conveying device, wherein the process gas channel ( 9 ) of the process gas feeding device is arranged at least partially within the profile ( 3 ) and the nozzle block ( 2 ) is provided with multiple bores ( 7 ), which adjoin the process has channel ( 9 ) and are arranged parallel to or at an acute angel of ±5° to the welding wire chancel ( 4 ) of the wire feeding nozzle ( 1 ) and around the wire feeding nozzle ( 1 ). In this case, the nozzle block ( 2 ) is formed cylindrically in the direction of an end ( 14 ) having the wire feeding nozzle ( 1 ), wherein the bores ( 7 ) arranged within the nozzle block run out into depressions ( 15 ) on the surface of the nozzle block ( 2 ).

Battery-powered welder and method of use

A battery-powered welder with a plurality of quick-connect modular components includes a power source component; a neck assembly component to create an electric arc between an electrode wire and workpiece metal, causing the electrode wire and workpiece metal to melt and join; an electrode spool component including an electrode wire spool reel housing and spool to carry the electrode wire; a wire feed component including a motor to feed the electrode wire from electrode spool component into the neck assembly component; a handle component for holding and operating the battery-powered welder during use; a flexible cable to provide remote attachment of various components to avoid additional hand held weight; a power source component to power the battery-powered welder, wherein the power source component, the neck assembly component, the electrode spool component, the wire feed component, the handle component, the flexible cable, and the power source component include quick connects to allow seamless, simplistic interchange and reconfiguration of the battery-powered welder.

SYSTEMS AND METHODS FOR ADAPTIVE CONTROL OF WIRE PREHEATING

A welding-type system includes a power supply configured to control preheating of an electrode wire. A controller is configured to receive a plurality of power values corresponding to a power output of the power supply and calculate an arc power value corresponding to an arc condition at the preheated electrode wire based on a rate of change of the plurality of power values. A target power output value is determined based on the calculated arc power value, and the power output is adjusted based on the determined target power value. 1. A welding-type system , comprising:a power supply configured to preheat an electrode wire; and receive a plurality of power values corresponding to a power output of the power supply;', 'calculate an arc power value corresponding to an arc condition at the preheated electrode wire based on a rate of change of the plurality of power values;', 'determine a target power output value based on the calculated arc power value; and', 'adjust the power output based on the determined target power value., 'a controller configured to2. The system as defined in claim 1 , wherein the power output is regulated between a high threshold value and a low threshold value about the target power output value.3. The system as defined in claim 2 , wherein the controller is configured to:compare a first power value of the plurality of power values to the high threshold power value and the low threshold power value; andadjust the power output based on the comparison.4. The system as defined in claim 2 , wherein the controller is configured to:raise the power output if the first power output is below the low threshold power value; andto lower the power output if the first power output is above the high threshold power value.5. The system as defined in claim 2 , further comprising a wire feeder claim 2 , the controller further configured to adjust a wire feed speed based on a comparison of the first power value to the target power output value and the high and ...

SOLID WIRE, AND GAS-SHIELDED ARC WELDING METHOD USING SAME

A solid wire is for gas-shielded arc welding, using a shielding gas, and for galvanized steel sheet welding. The solid wire comprises, to the mass of the whole of the solid wire, predetermined amount of C, Si, Mn, P, S, O, and Cr, with the balance consisting Fe and inevitable impurities. The solid wire satisfies “1.0≦(percentage by mass of Si+that by mass of Mn)/{100(that by mass of S+that by mass of O}≦4.0” and “0.50≦percentage by mass of Mn/that by mass of Si≦2.00”. The shielding gas is an Ar gas comprising 25 to 40% of COgas. It is achieved to improve spatter-decreasing performance and pore-resisting performance (performance of restraining the generation of porosity defects, such as pits and blowholes). 1: A solid wire ,comprising: relative to the total mass of the solid wire,C, 0.15% by mass or less,Si: 0.40 to 0.90% by mass,Mn: 0.20 to 1.50% by mass,P: 0.0500% by mass or less,S: 0.0080% by mass or less,O: 0.0100% by mass or less,Cr: 1.00% by mass or less, andFe,wherein [{'br': None, '1.0≦(percentage by mass of Si+percentage by mass of Mn)/{100(percentage by mass of S+percentage by mass of O}≦4.0, and'}, {'br': None, '0.50≦percentage by mass of Mn/percentage by mass of Si≦2.00, and'}], 'the solid wire satisfies the following two conditions{'sub': '2', 'the solid wire is suitable for gas-shielded arc welding using a shielding gas, which is an Ar gas comprising 25 to 40% of COgas.'}2: The solid wire according to claim 1 , which has a wire diameter of from 0.7 to 1.1 mm.3: A gas-shielded arc welding method claim 1 , comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'feeding the solid wire according to into the shielding gas; and'}supplying a welding current to the solid wire to generate arc between the solid wire and a galvanized steel sheet which is a base metal member, thereby welding the steel sheet.4: The gas-shielded arc welding method according to claim 3 , whereinthe welding current is a pulse current,the pulse current is a current generated by ...

AUTOMATED WELDING OF MOULDS AND STAMPING TOOLS

A tool welding system is disclosed that includes a table that heats a tool. A multi-axis robot includes a welding head that is moved relative to the table in response to a command. A controller is in communication with the robot and generates the command in response to welding parameters. The weld parameters are based upon a difference between an initial tool shape and a desired tool shape. The difference between the initial tool shape and the desired tool shape corresponds to a desired weld shape. The desired weld shape is adjusted based upon initial tool shape variations, which includes thermal growth of the tool. The tool is welded to provide the desired weld shape to achieve a desired tool shape. 1. A method of welding a tool comprising the steps of:providing a robot having a welding head; andadjusting a position of a tool relative to a floor surface.2. The method as recited in claim 1 , wherein the tool is adjustable about three axes relative to the floor surface.3. The method as recited in claim 2 , wherein the tool is adjustable about a vertical axis claim 2 , a longitudinal axis claim 2 , and a lateral axis.4. The method as recited in claim 3 , further comprising:operating a first drive attached to a first face of a table supporting the tool to adjust the tool about one of the longitudinal axis and the lateral axis; andoperating a second drive attached to a second face of the table to adjust the tool about the other of the longitudinal axis and the lateral axis.5. The method as recited in claim 4 , wherein the second face of the table is substantially perpendicular to the first face.6. The method as recited in claim 4 , wherein a plurality of actuators are provided between the table and a floor surface claim 4 , the actuators at least partially supporting the weight of the tool.7. The method as recited in claim 4 , wherein the first and second drives are worm drives including a worm and a worm gear.8. The method as recited in claim 4 , wherein a plurality of ...

WELDING APPARATUS AND A METHOD FOR WELDING

A twin wire welding apparatus including a first contact tube for guiding a first consumable electrode toward a weld puddle and transferring welding current to the first consumable electrode, a second contact tube for guiding a second consumable electrode toward said weld puddle and transferring welding current to the second consumable electrode, and a single power source connected to said first and second contact tubes for providing the same potential to said two consumable electrodes, and a method for operating such an apparatus. 1. A twin wire welding apparatus comprising:a first contact tube for guiding a first consumable electrode toward a weld puddle and for transferring welding current to the first consumable electrode;a second contact tube for guiding a second consumable electrode toward said weld puddle and for transferring welding current to the second consumable electrode;a power source connected to said first and second contact tubes for providing a potential to said two consumable electrodes; anda feeding arrangement for feeding a cold wire into said weld puddle.2. A welding apparatus according to claim 1 , wherein said feeding arrangement is arranged to feed said cold wire into said weld puddle at an angle of less than 5° with respect to a surface normal.3. A welding apparatus according to claim 1 , wherein said first and second contact tubes are formed in separate contact tips.4. A welding apparatus according to claim 1 , wherein the first and second contact tubes are connected to single power source via first and second contact devices claim 1 , wherein said first and second contact devices are separate for the first and second contact tubes.5. A welding apparatus according to claim 1 , wherein said welding apparatus further includes a contact tube spacing mechanism for adjusting a spacing between a respective tip of said first and second contact tubes.6. A welding apparatus according to claim 1 , wherein said welding apparatus further includes a ...

Fillet welded joint and method of production of same

The present invention provides a fillet welded joint and a method of production of a fillet welded joint which can raise the productivity of the method of production of a fillet welded joint and a fillet welded joint without sacrificing the strength against fatigue fracture of the welded structural member. The fillet welded joint of the present invention is a fillet welded joint formed by fillet welding at least two metal members, wherein, on the surface of at least one of the metal members, the fillet welded joint comprises a press bead of a rib-shaped projection provided by press-forming so as to project upward to the side having a weld bead formed by the fillet welding, and part of the press bead contacts or overlaps the weld bead.

High fracture toughness welds in thick workpieces

Embodiments of flux cored welding electrodes and methods of use thereof are disclosed. The flux cored welding electrodes limit brittleness of flux cored arc welds, particularly in thick weld deposits. Limiting brittleness in thick (e.g., from about 1″ to about 6″) flux cored arc welds is achieved by utilizing flux cored welding electrodes having chemical compositions that reduce (as compared to presently marketed electrodes) or altogether eliminate niobium and vanadium from their chemical compositions.

Arc-welding control method

A pulse welding period includes a first peak period for supplying a first peak current to a welding wire, a first base period for supplying a base current smaller than the first peak current to the welding wire, a second peak period for supplying a second peak current to the welding wire after alternately repeating the first peak period and the first base period (n−1) times (n is an integer equal to or larger than 2), and a second base period for supplying the base current to the welding wire. The second peak current is larger than the first peak current, and droplets are transferred from the welding wire during the second peak period or the second base period.

ARC WELDING CONTROL METHOD

Forward feeding for feeding a welding wire in a direction of a workpiece and backward feeding for feeding in an opposite direction to the forward feeding are alternately performed, and the welding wire is fed at a wire feeding speed cyclically changed in a predetermined cycle and at a predetermined amplitude to perform welding by repeating an arc period and a short-circuit period. Provided during forward feeding, stopping feeding of the welding wire from a time of an elapse of a half cycle of a change of the wire feeding speed to an elapse of a first feeding stop period, and feeding the welding wire forward at a first feeding speed from an elapse of the first feeding stop period to an elapse of a predetermined period. The welding wire is fed backward after the elapse of the predetermined period. 1. An arc welding control method of a consumable electrode type that alternately performs forward feeding for feeding a welding wire in a direction of a welding object and backward feeding for feeding in an opposite direction to the forward feeding , and feeds the welding wire at a wire feeding speed cyclically changed in a predetermined cycle and at a predetermined amplitude to perform welding by repeating an arc period and a short-circuit period , the arc welding control method comprising:stopping feeding of the welding wire from a time of an elapse of a half cycle of a change of the wire feeding speed to an elapse of a first feeding stop period during forward feeding of the welding wire; andfeeding the welding wire forward at a first feeding speed from a time of an elapse of the first feeding stop period to an elapse of a predetermined period, the welding wire being fed backward after the elapse of the predetermined period.2. The arc welding control method of claim 1 , whereinthe first feeding speed monotonously increases in accordance with a basic feeding speed of the welding wire.3. The arc welding control method of claim 1 , further comprising:stopping feeding of the ...

NOZZLE AND GAS DIFFUSER ASSEMBLIES FOR WELDING TORCHES

A nozzle assembly for a welding torch is disclosed. The nozzle assembly comprises a nozzle, a contact tip, and a gas diffuser assembly. The gas diffuser assembly comprises a gas diffuser, coupled to an insulator. The gas diffuser is also coupled to a gooseneck and the contact tip. The nozzle is coupled to the gas diffuser assembly, such that the contact tip is retained within the nozzle. The nozzle and gas diffuser assembly further include complementary engagement features to couple the nozzle to the gas diffuser assembly. The nozzle also includes a spatter deflector configured to deflect or block spatter from obstructing gas holes of the gas diffuser assembly. 1. A nozzle for a welding torch , comprising: a front opening having a first diameter,', 'a narrow neck having a second diameter, and', 'a spatter deflector between the front opening and the narrowing neck, the spatter deflector having a third diameter that is larger than the first diameter or the second diameter., 'an internal surface defining2. The nozzle of claim 1 , wherein the third diameter is larger than the first diameter and the second diameter.3. The nozzle of claim 1 , wherein the first diameter is equal to the second diameter.4. The nozzle of claim 1 , wherein the internal surface further defines a rear opening having a fourth diameter that is larger than the first claim 1 , second claim 1 , and third diameters.5. The nozzle of claim 1 , wherein the internal surface further comprises one or more engagement features configured to mate with one or more complementary engagement features of a gas diffuser assembly so as to retain the gas diffuser assembly within the nozzle.6. The nozzle of claim 5 , wherein the one or more engagement features comprise one or more of a tapered rear edge claim 5 , an annular groove claim 5 , and a screw thread.7. The nozzle of claim 1 , wherein the spatter deflector is configured to stop weld spatter that enters the front opening from traveling past the narrow neck.8. A ...

WELDING DIFFUSER INSERT

A diffuser insert is provided for use with a welding diffuser and contact tip assembly comprising a diffuser with an interior chamber configured to receive a wire conduit that supplies electrode wire and a shielding gas used during a welding operation and a contact tip coupled to the diffuser and configured to receive electrode wire. The diffuser insert comprises a diffuser insert body configured to be disposed within the interior chamber of the diffuser, and further comprises an insert bore extending therethrough configured to receive electrode wire. An outer periphery of the diffuser insert has at least one surface feature configured to manipulate a flow of said shielding gas from within said interior chamber of the diffuser and out of exit passages to thereby direct said flow of shielding gas about a molten welding puddle formed during a welding operation. 1. A diffuser assembly for a welding torch; said diffuser assembly comprising:a diffuser body having a first end and a second end positioned opposite said first end, said diffuser body having a longitudinal axis extending from said first end to said second end;an interior chamber positioned between said first end and said second end, where said interior chamber is open at said first end to permit a flow of a gas into said interior chamber from said first end and where said interior chamber is defined by a wall portion of said diffuser body;a plurality of openings in said wall portion of said interior chamber where said plurality of openings pass through said wall portion to permit said flow of said gas to exit said interior chamber through said plurality of openings; anda diffuser insert positioned within said interior chamber, where said diffuser insert seats within said interior chamber and where said diffuser insert is exposed to an outside of said diffuser body through said plurality of openings;wherein said diffuser insert has an insert bore which passes through said diffuser insert and is co-axial with ...

WELDING DIFFUSER INSERT

A diffuser insert is provided for use with a welding diffuser and contact tip assembly comprising a diffuser with an interior chamber configured to receive a wire conduit that supplies electrode wire and a shielding gas used during a welding operation and a contact tip coupled to the diffuser and configured to receive electrode wire. The diffuser insert comprises a diffuser insert body configured to be disposed within the interior chamber of the diffuser, and further comprises an insert bore extending therethrough configured to receive electrode wire. An outer periphery of the diffuser insert has at least one surface feature configured to manipulate a flow of said shielding gas from within said interior chamber of the diffuser and out of exit passages to thereby direct said flow of shielding gas about a molten welding puddle formed during a welding operation. 1. A diffuser assembly for a welding torch; said diffuser assembly comprising:a diffuser body having a first end and a second end positioned opposite said first end, said diffuser body having a longitudinal axis extending from said first end to said second end;an interior chamber positioned between said first end and said second end, where said interior chamber is open at said first end to permit a flow of a gas into said interior chamber from said first end and where said interior chamber is defined by a wall portion of said diffuser body;a plurality of openings in said wall portion of said interior chamber where said plurality of openings pass through said wall portion to permit said flow of said gas to exit said interior chamber through said plurality of openings; anda diffuser insert positioned within said interior chamber, where said diffuser insert seats within said interior chamber and where said diffuser insert is exposed to an outside of said diffuser body through said plurality of openings;wherein said diffuser insert has an upstream cavity portion and a downstream bore portion, each of which are co- ...

ROBOT ARM APPARATUS AND ACTUATOR

A robot arm apparatus includes a base structure, a first arm, a first actuator, and an assisting device. The first arm is pivotable relative to the base structure about a first pivot axis. The first actuator is configured to pivotally actuate the first arm relative to the base structure. The assisting device is configured to apply an assist rotational force to the first arm to assist the first actuator. 1. A robot arm apparatus comprising:a base structure;a first arm pivotable relative to the base structure about a first pivot axis;a first actuator configured to pivotally actuate the first arm relative to the base structure; andan assisting device configured to apply an assist rotational force to the first arm to assist the first actuator.2. The robot arm apparatus according to claim 1 , whereinthe first arm is pivotable relative to the base structure about the first pivot axis within a first pivotable range, andthe assisting device is configured to apply the assist rotational force to the first arm while the first arm pivots relative to the base structure about the first pivot axis within a second pivotable range smaller than the first pivotable range.3. The robot arm apparatus according to claim 2 , whereinthe first arm is pivotable relative to the base structure about the first pivot axis between an initial position and an actuated end position through an intermediate position defined between the initial position and the actuated end position,the first pivotable range is defined between the initial position and the actuated end position, andthe second pivotable range is defined between the intermediate position and the actuated end position.4. The robot arm apparatus according to claim 1 , wherein a force-generating member configured to generate the assist rotational force, and', 'a transmitting structure configured to transmit the assist rotational force from the force-generating member to the first arm., 'the assisting device includes'}5. The robot arm ...

Hot-wire welding assembly for deep and narrow recessed gaps

A contact tip for hot-wire welder is provided that are adapted to operate in deep and narrow recessed gaps within a work piece. Contact tips in accordance with the current invention provide for an assembly having a body portion with a cavity and an extension portion which is inserted into the cavity. The extension portion is non-electrically conductive and allows the contact tip assembly to reach into deep, narrow grooves without worry of shorting the contact tip of the consumable.

WIRE AIMING GUIDE AND WELDING DEVICE

According to the present invention, there is provided a wire aiming guide capable of further improving usability. The present invention provides a wire aiming guide () configured to guide a welding wire (W) and feed the welding wire from a tip side thereof while being attached to a welding torch including: a first guide member () and a second guide member () configured to guide the welding wire (W): and a connecting portion () rotatably connecting the first guide member () and the second guide member (), wherein a direction of the welding wire (W) fed from a tip end side of the first guide member () is adjusted by bending the first guide member () with respect to the second guide member (). 1. A wire aiming guide configured to guide a welding wire and feed the welding wire from a tip side thereof while being attached to a welding torch comprising:a first guide member and a second guide member configured to guide the welding wire: anda connecting portion rotatably connecting the first guide member and the second guide member,wherein a direction of the welding wire fed from a tip end side of the first guide member is adjusted by bending the first guide member with respect to the second guide member.2. The wire aiming guide according to claim 1 , wherein a nozzle portion configured to penetrate the welding wire is provided on the tip side of the first guide member claim 1 , and the welding wire is fed out from the tip of the nozzle portion.3. The wire aiming guide according to claim 1 , wherein a first guide portion configured to guide the welding wire toward the nozzle portion side is provided with the first guide member.4. The wire aiming guide according to claim 3 , wherein the first guide portion is positioned on both side of the welding wire so as to sandwich the welding wire claim 3 , and the welding wire is guided toward the nozzle portion side while being sandwiched by the first guide portion.5. The wire aiming guide according to claim 1 , wherein the wire ...

WELDING TORCH AND DEVICE USING SAID TORCH

A welding torch includes a main body and an end portion suited to be fed through the main body with a welding wire and a shielding gas. The end portion includes a welding unit electrically powered and provided with an internal channel for the passage of the welding wire. A conveyor element is provided with an outlet mouth to allow the welding wire to move out of the welding unit and to allow the shielding gas to be conveyed outside of the welding unit. Electrical insulation means are interposed between the welding unit and the conveyor element with an insulation portion made of an electrically non-conductive material. The welding torch includes the conveyor channel suited to convey the shielding gas from the main body to the outlet mouth of the conveyor element. The conveyor channel is delimited at least partially by the insulation portion. 2) Torch according to claim 1 , characterized in that said at least one conveyor channel is created in said insulating portion and is completely delimited in said insulating portion.312022242224602422) Torch () according to or claim 1 , characterized in that said electrical insulation means () furthermore comprise an inner interface element () associated with the inside of said insulating portion () claim 1 , said inner interface element () being interposed between said insulating portion () and said welding unit and said at least one conveyor channel () being delimited at least partially by said insulating portion () and at least partially by said inner interface element ().412422222260222460a) Torch () according to claim 3 , characterized in that said insulating portion () and said inner interface element () are in a tubular shape with longitudinal development claim 3 , said inner interface element () delimiting an inner area suited to accommodate at least part of said welding unit claim 3 , wherein said inner interface element () comprises at least one groove () made on its external surface () directed towards said insulating ...

Modified Series Arc Welding And Improved Control of One Sided Series Arc Welding

An electric arc welding system for depositing weld metal along a groove between two edges of a metal workpiece where the system contains a first power supply and a second power supply, each providing a welding waveform to respective welding electrodes. The positive output terminals of both power supplies are coupled to the same contact tip and the negative output terminal of one of the power supplies is not coupled to the workpiece. 1. A welding system , comprising:a first welding power supply having a first positive output terminal and a first negative output terminal, where said first positive output terminal is coupled to a first contact tip and said first negative output terminal is coupled to a workpiece; anda second welding power supply having a second positive output terminal and a second negative output terminal, where said second positive output terminal is coupled to said first contact tip and said second negative output terminal is coupled to a second contact tip;wherein said second negative output terminal is not coupled to said workpiece, andwherein each of said first and second contact tips are oriented to direct a first welding electrode and a second welding electrode, respectively, to a common welding arc for welding said workpiece.2. The welding system of claim 1 , further comprising at least a third power supply having a third positive output terminal and a third negative output terminal claim 1 , where said third positive output terminal is coupled to a third contact tip and a said third negative terminal is coupled to said workpiece.3. The welding system of claim 1 , wherein said first power supply supplies a first welding current having a first RMS value to said first welding electrode and said second power supply provides a second welding current to said first welding electrode claim 1 , where said first RMS current is higher than said second RMS current.4. The welding power supply of claim 3 , wherein said first RMS current is higher than said ...

METHOD FOR CONTROLLING A WELDING PROCESS

In order to develop a welding process in such a way that uniform flaking of a weld seam can be guaranteed even with a higher number of short-circuit cycles, a specific number of short-circuit cycles is specified for the cold welding phase and the cold phase duration of the cold welding phase is determined for a number of short-circuit cycles that exceeds a specified limit cycle number, depending on a determined cold phase time and after the cold welding phase, there is a switch to the hot welding phase. 1. A method for controlling a welding process with a consumable electrode , in which method , after the ignition of an arc between the electrode and a base material , at least two different chronologically sequential welding phases are used , a cold welding phase being used during a cold phase duration and a hot welding phase being used during a subsequent hot phase duration , at least one short-circuit cycle having a short-circuit cycle time being carried out in the cold welding phase , wherein a specific number of short-circuit cycles is specified for the cold welding phase and wherein the cold phase duration of the cold welding phase is determined , for a number of short-circuit cycles that exceeds a specified limit cycle number , depending on a determined cold phase time and wherein after the cold welding phase , there is a switch to the hot welding phase , and in order to determine the cold phase duration , a short-circuit cycle that has already started at the time of expiry of the cold phase time being completed before the switch to the hot welding phase.2. The method according to claim 1 , wherein in order to determine the cold phase duration depending on the cold phase time before the end of the cold phase time claim 1 , a tolerance point in time is specified from which the start of a new short-circuit cycle is omitted claim 1 , a short-circuit cycle carried out at the tolerance point in time being ended before the switch to the hot welding phase.3. (canceled ...

COLLAR ASSEMBLY FOR SECURING CONSUMABLES OF AN ARC WELDING APPARATUS

An arc welding apparatus includes a conductor tube assembly that has a collar assembly with a collar body that is biased by a spring. A consumable assembly is mechanically secured to the conductor tube and displaces the collar body and the collar body imparts a biasing force against the consumable assembly pretensioning the consumable assembly on the conductor tube assembly. 1a conductor tube having a distal portion defining an external surface profile and an outward protrusion; a collar body defining an exterior surface and an internal bore, wherein the internal bore further defines a distal portion having a distal diameter and a proximal portion having a proximal diameter, wherein the distal diameter is smaller than the proximal diameter;', 'a wave spring disposed between the body and the exterior surface of the conductor tube and wherein the wave spring biases the collar body between the outward protrusion and the distal portion;, 'a collar assembly comprising 'a body having a proximal end portion and a distal end portion, the body defining inner and outer surface profiles, the inner surface profile configured to slidably engage over the external surface profile of the conductor tube, and the outer surface profile comprising a threaded portion, and wherein the sleeve engages against the collar body to secure the collar body on the conductor tube;', 'a sleeve comprising 'an inner profile configured to mechanically attach to the threaded portion of the sleeve, and a distal end having an internal distal flange;', 'a consumable assembly having an inner body, the inner body comprisinga contact tip defines an external shoulder configured to abut the internal distal flange for securing the contact tip to the conductor tube; andwherein the inner body is threaded onto the thread portion of the sleeve and the inner body engages against the collar body displacing the collar body causing the wave spring to exert a biasing force through the collar body against the inner body ...

WIRE SPOOL GUN

A spool gun having a very unique look, due to its arrangement of internal and external features. The spool gun has its wire spool compartment located below the handle and the user's hand, when the user is gripping the spool gun in an operational position, thus providing a wire path through the handle to the body of the spool gear wherein the wire feed mechanism is located. The wire feed mechanism includes a 90-degree drive system, which can include a worm gear. A gas/power cable is connected to the body of the spool gun forward of the handle. 1. A spool gun having a distal end configured to be positioned away from the user when the spool gun is in use and a proximal end configured to be positioned proximate the user when the spool gun is in use , the spool gun comprising:a body portion enclosing at least a portion of a wire feed subsystem;a handle portion having a first end connected proximal to the body portion and extending to the proximal end of the spool gun;a welding torch manifold; anda gas/power cable inlet.2. The spool gun of claim 1 , wherein the wire feed subsystem comprises a drive motor and a wire feed mechanism.3. The spool gun of claim 2 , wherein both the drive motor and the wire feed mechanism are enclosed in the body portion.4. The spool gun of claim 2 , wherein the wire feed mechanism comprises a worm gear.5. The spool gun of claim 2 , wherein the drive motor has an axial output shaft and the wire feed mechanism is connected at a 90 degree angle thereto.6. The spool gun of claim 1 , further comprising a wire spool housing connected to the handle portion at the proximal end of the spool gun.7. The spool gun of further comprising a wire inlet guide inline between the spool housing and the wire feed subsystem claim 1 , the wire inlet guide comprising an internal passage having a tapered region.8. A spool gun having a distal end configured to be positioned away from the user when the spool gun is in use and a proximal end configured to be positioned ...

WIRE SPOOL GUN

A spool gun having a very unique look, due to its arrangement of features. The spool gun has its wire spool compartment located below the handle and the user's hand, when the user is gripping the spool gun in an operational position. Operably connected to the wire spool compartment is wire spool brake configured to engage with the wire wraps. The brake can have a lock and/or a wire spool life indicator. The wire spool compartment has a cover that is non-threadedly engaged. The feed rate of the wire from the wire spool compartment can be adjusted by a control device, such as a knob, located proximate the user's hand, when the user is gripping the spool gun in the operational position. 1. A spool gun having a distal end configured to be positioned away from the user when the spool gun is in use and a proximal end configured to be positioned proximate the user when the spool gun is in use , the spool gun comprising:a body portion;a wire feed subsystem comprising a drive motor and a wire feed mechanism;a handle portion having a first end connected proximal to the body portion;a wire spool housing having an interior with a center point and a removable cover providing access to the interior; anda spool brake comprising a pressure plate located within the interior of the spool housing, and a spring configured to bias the pressure plate toward the center point of the spool housing.2. The spool gun of claim 1 , wherein the pressure plate has a concave face.3. The spool gun of claim 1 , wherein the spool brake comprises an elongate member having a first end and a second end claim 1 , with the pressure plate located at the second end and the spring located proximate the first end.4. The spool gun of claim 1 , wherein the spool brake further comprises a brake lock.5. The spool gun of claim 4 , wherein the spool brake further comprises a spool life indicator.61. The spool gun of claim claim 4 , claim 4 , wherein the handle portion has the first end connected proximal to the body ...

SYSTEM AND METHOD FOR CONTROLLING SHIELDING GAS FLOW IN A WELDING DEVICE

The present disclosure is directed to a system and method for obtaining a desirable shielding gas flow in a welding device. The system includes a user interface configured for a user to input the size of the nozzle, a processor that is configured to calculate a desirable flow rate of shielding gas based at least in part on the input nozzle size, and a flow regulator that is configured to control the flow of the shielding gas in order to obtain the desirable flow rate. 1. A system for obtaining a desirable shielding gas flow in a welding device , the system comprising:a user interface configured for a user to input the size of a nozzle;a processor configured to calculate a desirable flow rate of the shielding gas based at least in part on the input nozzle size; anda flow regulator configured to control the flow of the shielding gas in order to obtain the desirable flow rate.2. The system of claim 1 , wherein the flow regulator adjusts to pressure fluctuations in order to substantially maintain the desirable flow rate.4. The system of claim 1 , wherein the user interface is configured for a user to identify the shielding gas.5. The system of claim 3 , wherein the interface is configured for a user to identify air current conditions in the vicinity of a weld operation claim 3 , the amperage setting of the welding power source claim 3 , if a weld operation is to be performed at a high travel speed claim 3 , or a combination thereof claim 3 , and the value of Re is determined based on the input information.6. The system of claim 1 , wherein the user interface is also configured to display the flow rate of the shielding gas.7. The system of claim 1 , wherein the user interface is configured so that a user may manually adjust the flow rate of the shielding gas.8. The system of claim 7 , wherein a range of suitable flow rates is either calculated by the processor or input through the user interface claim 7 , and wherein the user may only adjust the flow rate of the ...

DEVICE FOR PROVIDING A LAMINAR FLOW OF SHIELDING GAS IN A WELDING DEVICE

The present disclosure is directed to a component of a welding device that is configured to produce a shielding gas having a developed flow profile, which provides for a shielding gas column having a laminar profile over a greater length than has been achieved through conventional means. The component utilizes one or more flow restrictors, which are configured to provide higher resistance to the flow of shielding gas at increasing distances from the center of a shielding gas flow channel. By providing increasing resistance toward the periphery of the channel, a developed shielding gas flow profile may be achieved over a relatively short flow length. 1. A component of a welding implement comprising:a body extending between a first end and a second end, the first end being configured to attach to a welding implement;a shielding gas channel extending through the body between the first end and the second end and configured for a flow of shielding gas between the first end and the second end; andone or more flow restrictors within the channel, the one or more flow restrictors being configured to provide higher resistance to the flow of shielding gas at increasing distances from the center of the channel.2. The component of claim 1 , wherein the one or more flow restrictors comprise a plurality of gas conduits.3. The component of claim 2 , wherein at increasing distances from the center of the channel claim 2 , the gas conduits have decreasing cross-sections claim 2 , increasing lengths claim 2 , or a combination thereof.4. The component of claim 3 , wherein the gas conduits have decreasing cross-sections at increasing distance from the center of the channel.5. The component of claim 3 , wherein the gas conduits have increasing lengths at increasing distance from the center of the channel.6. The component of claim 3 , wherein the plurality of gas conduits comprises a series of nested conduits.7. The component of claim 3 , wherein the plurality of gas conduits comprises a ...

WELDING METHOD

A welding method wherein the root gap aperture displacement is measured before welding begins, and a welding material having a Mn/S ratio and a Mn/Si ratio compatible with the measured root gap aperture displacement is selected from gas-shielded arc welding materials. Gas-shielded arc welding is then performed using the selected welding material. 13-. (canceled)4. A method for performing welding under fluctuating stress , the method comprising:measuring a root opening width variation before start of welding; andselecting a welding consumable having Mn/S and Mn/Si ratios accommodating the measured root opening width variation from among gas shielded arc welding consumables.5. The method of claim 4 , wherein claim 4 , when a root opening width variation during welding is measured claim 4 , and the measured root opening width variation exceeds an allowable value assumed to select the welding consumable claim 4 , quality of a welded joint formed at a time when the measured root opening width variation exceeds the allowable value is inspected.6. The method of claim 4 , wherein the welding consumable is selected based on a root opening. This application is a national stage application, filed under 35 U.S.C. §371, of International Application No. PCT/JP2013/002322, filed Apr. 3, 2013, which claims priority to Japanese Application No. 2012-086827, filed Apr. 5, 2012, the contents of both of which being hereby incorporated by reference in their entirety.1. Technical FieldThe technique disclosed herein relates to a gas shielded metal arc welding method for use in, for example, butt welding of steel plates.2. Description of Related ArtIn recent years, an increase in traffic volume or an increase in vehicle weight has caused damage to already-existing bridges, and the already-existing bridges, therefore, have been repaired or reinforced. To address such an increase in traffic volume or such an increase in vehicle weight, the functionality of the bridges has been enhanced. For ...

WELDING SYSTEM AND METHOD

A welding system having a welding gun with a contact tip having an bore extending therethrough and a consumable weld wire. The cross-sectional shape of the bore of the contact tip being is essentially identical to the cross-sectional shape of the weld wire. The bore having an essentially elliptical cross-sectional shape and the weld wire having an essentially elliptical cross-sectional shape. 1. In a combination of a contact tip and a weld wire for gas metal arc welding , the contact tip having a body with opposed ends and a bore extending between the ends wherein the weld wire is configured to extend through the bore; the improvement which comprises: the bore of the contact tip having a cross-sectional shape essentially identical to a cross-sectional shape of the weld wire wherein the cross-sectional shape of the bore is not a circle.2. The combination of wherein the cross-sectional shape of the bore is essentially an ellipse.3. The combination of wherein the cross-sectional shape of the bore is essentially an oval.4. In a combination of a contact tip and a weld wire for gas metal arc welding claim 1 , the contact tip having a body with opposed ends and a bore extending between the ends wherein the weld wire is configured to extend through the bore; the improvement which comprises: the bore of the contact tip having a modified elliptical cross-sectional shape with a major axis and a minor axis and the weld wire having a cross-sectional elliptical shape with a major axis and a minor axis and wherein claim 1 , a difference in a cross sectional size of the bore and a cross-sectional size of the weld wire is greater in a direction of a first axis of the bore than a second axis of the bore.5. The combination of wherein the first axis of the bore is the minor axis of the bore and the second axis of the bore is the major axis of the bore and a length of the minor axis of the bore is increased to increase the cross sectional size of the bore.6. The combination of wherein ...

Semi-automatic welding system, conversion adapter kit, and welding torch

According to the present invention, a non-consumable electrode type semi-automatic welding system which can conduct welding with high weld deposit and high speed is provided. A welding torch ( 1 ), in which a non-consumable electrode ( 1 ) generating an arc between the non-consumable electrode and an object to be welded and a torch nozzle ( 5 ) ejecting a shield gas toward a welding pool of the object to be welded generated by the arc are provided; a wire feeder ( 502 ) which delivers a welding wire ( 10 ) toward the welding pool of the object to be welded from a tip end of a feeding head, the feeding head being mounted on the welding torch ( 1 ) via an attaching jig ( 14 ); and a welding power source ( 501 ) which supplies electric power and shield gas to the welding torch ( 1 ); are provided and one or more among the welding torch ( 1 ), the wire feeder ( 502 ), and the welding power source ( 501 ) are constituted by applying at least one part of a welding torch, wire feeder, and welding power source provided in a consumable electrode type semi-automatic welding system.

Welding torch with a fixing element for the gas nozzle, said element being capable of extension; process control method for a welding system equipped with said welding torch; gas nozzle for said welding torch; and contact tube for said welding torch

The invention relates to a single- or multi-wire welding torch ( 6 ), more specifically to a laser-hybrid single- or multi-wire welding head provided with the welding torch ( 6 ) which can be connected to a welding device via a hose pack and consists of several parts such as a torch handle, a tubular welding torch housing, a contact housing, a contact tube for each welding wire ( 21 a, 21 b ), a gas nozzle ( 2 ) etc., wherein an internal insert ( 28 ) for receiving the contact tube(s) ( 20 a, 20 b ) and the gas nozzle ( 2 ) is mounted in an end area of the welding torch housing. A fixing element ( 30 ) made at least partially of a flexible material is placed on the internal insert ( 28 ) or on the housing ( 2 ) for producing as required an, in particular, gas-tight connection between said internal insert ( 28 ) and the gas nozzle ( 2 ) pushed thereon. This connection can be established by the spatial extension of the fixing element. A method for the process control of a robot welding system, a gas nozzle cap and a gas nozzle ( 2 ) for a welding torch ( 6 ) are also disclosed.

MODIFIED FLUX SYSTEM IN CORED ELECTRODE

A cored electrode having reduced moisture pick-up properties and which forms a weld bead with low diffusible hydrogen in a gas shielded electric arc welding process. The cored electrode includes a metal sheath and a fill composition. The fill composition includes titanium dioxide, slag forming agent and a sodium-silica-titanate compound. 1. A method of forming a weld bead having a low diffusible hydrogen content by use of an electrode having reduced moisture pick-up comprising:providing a cored electrode that includes a metal sheath and a fill composition, said fill composition including titanium dioxide, a slag forming agent and a moisture resistant compound, said moisture resistant compound comprising a sodium-silico-titanate compound, wherein said sodium-silico-titanate compound is formed of a combination of a titanium compound, a potassium compound, a sodium compound and colloidal silica, said moisture resistant compound having an average particle size of 30-250 mesh, said moisture resistant compound including over 50 weight percent titanium compound, said moisture resistant compound having a weight ratio of sedum compound to potassium compound of about 1.1-5:1, said moisture resistant compound including at least about 1 weight percent colloidal silica, said colloidal silica having an average particle size of less than about 40 nm; and,at least partially melting said cored electrode by an electric current to cause said melted portion of said cored electrode to be deposited on a workpiece.2. The method as defined in claim 1 , including the step ofdirecting a shielding gas to said workpiece to at least partially shield said melted portion of said cored electrode being deposited on a workpiece.3. The method as defined in claim 2 , whereinsaid shielding gas includes argon, carbon dioxide or mixtures thereof.4. The method as defined in claim 1 , whereinsaid titanium dioxide minus any titanium dioxide in said moisture resistant compound is about 2-40 weight percent of ...

WELDING-TYPE POWER SUPPLIES WITH JOB SPECIFIC WELD MONITORING SYSTEMS

Systems and methods for tracking and associating welding-type data with selected welding jobs. A welding job from a plurality of welding jobs stored in memory of a welding-type power supply may be selected, and welding-type data collected while a particular welding jobs is selected is associated in memory with the selected welding job. Welding-type data associated with the plurality of welding jobs may be displayed and managed.

Tig welding torch equipped with narrow nozzle for spot welding, and electrode nozzle used in same

The present invention enables even a beginner to acquire the technique easily and perform suitable spot welding, and achieves improved workability, improved welding quality, improved productivity, and the like. The present invention includes a torch body 2 for passing a shielding gas, a tungsten electrode rod 5 inserted into the torch body 2 and connected to a cathode, a constricted nozzle 6 for supporting a distal end portion of the tungsten electrode rod 5 concentrically, defining a gas passage 6 e between the tungsten electrode rod 5 and the constricted nozzle 6 for flowing a shielding gas G, and discharging the shielding gas G from the constricted nozzle 6 at a higher speed than the shielding gas G discharged from the distal end of the torch body 2 , and a cylindrical electrode nozzle 7 having conductivity arranged concentrically with the tungsten electrode rod 5 on the outer circumference of the constricted nozzle 6 , connected to the anode via a ground cable 18 , and configured to have a tapered shape at a distal end portion, wherein the tapered distal end portion is located further outside than the distal end portion of the tungsten electrode rod 5 , gas vent ports 7 c and 7 d of the shielding gas G are provided on the electrode nozzle 7.

SENSOR ASSISTED HEAD MOUNTED DISPLAYS FOR WELDING

Sensor assisted head mounted displays for welding are disclosed. Disclosed example head mounted devices include an optical sensor, an augmented reality controller, a graphics processing unit, and a semi-transparent display. The optical sensor collects an image of a weld environment. The augmented reality controller determines a simulated object to be presented in a field of view, a position in the field of view, and a perspective of the simulated object in the field of view. The graphics processing unit renders the simulated object based on the perspective to represent the simulated object being present in the field of view and in the weld environment. The display presents the rendered simulated object within the field of view based on the position. At least a portion of the weld environment is observable through the display and the lens when the display is presenting the rendered simulated object. 1. A welding interface device , comprising: an illuminator to output a radiation at a first wavelength outside of an arc radiation spectrum;', 'a time-of-flight sensor to collect the image of the weld environment at the first wavelength; and', 'a bandpass filter to mitigate light at wavelengths other than the first wavelength;, 'an optical sensor to collect an image of a weld environment comprisingan augmented reality controller to, based on the image of the weld environment and first instructions that correspond to a weld operation in the weld environment, determine a simulated object to be presented in a field of view, a position of the simulated object in the field of view, and a perspective of the simulated object in the field of view;a graphics processing unit to render the simulated object as a three-dimensional stereographic image based on the perspective to represent the simulated object being present in the field of view and in the weld environment; anda semi-transparent display to present the rendered simulated object within the field of view based on the ...

WELDING TORCH

A welding torch () for arc welding in a shielding gas atmosphere, includes: a contact tip () for feeding a welding wire (); a suction nozzle () surrounding the welding wire, and sucking a gas from a space between the suction nozzle () and the welding wire; and a shielding gas supply nozzle () provided on the outer periphery of the suction nozzle (), and supplying the shielding gas toward a welded portion from a space between the shielding gas supply nozzle () and the suction nozzle (). The welding torch () satisfies “7≤Ltk≤17 and 0≤Lts≤18”, where Lts [mm] is a distance between the tip of the contact tip () and the tip of the shielding gas supply nozzle (), and Ltk [mm] is a distance between the tip of the contact tip () and the tip of the suction nozzle (). 1. A welding torch which performs arc welding in a shielding gas atmosphere , the welding torch comprising:a contact tip that supports a welding wire which is supplied with a welding current while the welding wire can be fed toward a tip portion;a suction nozzle that surrounds a periphery of the welding wire protruded from a tip portion of the contact tip, and sucks a gas from a space formed between the suction nozzle and the welding wire; anda shielding gas supply nozzle that is provided on an outer periphery of the suction nozzle, and supplies the shielding gas toward a welded portion at a tip of the welding wire from a space formed between the shielding gas supply nozzle and the suction nozzle, wherein [{'br': None, 'i': 'Ltk≤', '7≤17,'}, {'br': None, 'i': 'Lts≤', '0≤18\u2003\u2003(1)'}], 'where Lts [mm] is a distance along a welding wire longitudinal direction between a tip of the contact tip and a tip of the shielding gas supply nozzle, and Ltk [mm] is a distance along the welding wire longitudinal direction between the tip of the contact tip and a tip of the suction nozzle, the welding torch satisfies the relationship of the formula (1).'}2. The welding torch according to claim 1 , wherein [{'br': None, 'i ...