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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Применить Всего найдено 10917. Отображено 100.
19-04-2012 дата публикации

Metallic Composite Material

Номер: US20120094146A1
Автор: Chenchung Steve Chang, Michael David Hardy
Принадлежит: EMS ENGINEERED MATERIALS SOLUTIONS LLC

A roll bonded, composite metallic material utilizing a Magnesium (Mg) core to take advantage of its extreme light weight. The clad composite consist of roll bonded metal layers such as Al, stainless steel, copper and titanium on the surfaces of Mg. A multitude of clad combinations are available to combine the unique surface properties of various alloys to suit the particular application or design needs, with the light weight and strength characteristics of Mg.

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Номер записи: 1
11-04-2013 дата публикации

METHOD FOR MANUFACTURING HOT DIP GALVANIZED STEEL SHEET

Номер: US20130086960A1
Автор: Higai Kazuhiko, Hoshino Katsuya, Kijima Hideo, Kubota Takahiro, NAGOSHI Masayasu, Tada Masahiko, TANIMOTO Wataru
Принадлежит: JFE STEEL CORPORATION

An object of the present invention is to make it possible, without necessitating an alkali pretreatment, to form a zinc oxide layer having excellent sliding properties on a hot dip galvanized steel sheet not subjected to alloying after galvanizing and thus having a relatively low degree of surface activity. Another object of the present invention is to make it possible to manufacture a hot dip galvanized steel sheet having higher area ratio of Zn oxide layer formed on a coating surface and larger thickness of the Zn oxide layer. Specifically, the present invention provides a method for manufacturing a hot dip galvanized steel sheet comprising: subjecting a steel sheet to hot dip galvanizing and subsequent temper rolling; bringing the steel sheet into contact with acidic solution having pH buffering capacity; retaining the steel sheet for 1 second to 60 seconds after the contact with the acidic solution; and rinsing the steel sheet with water, to form a zinc oxide layer on a coating surface of the steel sheet, characterized in that the method further comprising: 1. A method for manufacturing a hot dip galvanized steel sheet comprising: subjecting a steel sheet to hot dip galvanizing and subsequent temper rolling; bringing the steel sheet into contact with acidic solution having pH buffering capacity; retaining the steel sheet for 1 second to 60 seconds after the contact with the acidic solution; and rinsing the steel sheet with water , to form a zinc oxide layer on a coating surface of the steel sheet , wherein the method further comprising:carrying out the temper rolling by either rolling the steel sheet first with a dull roll having Ra≧2.0 μm at rolling reduction rate ≦5% and then with a bright roll having Ra≦0.1 μm at rolling reduction rate ≦3% or rolling the steel sheet first with a bright roll having Ra≦0.1 μm at rolling reduction rate ≦3% and then with a dull roll having Ra≧2.0 μm at rolling reduction rate ≦5%.2. The method for manufacturing a hot dip ...

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Номер записи: 2
23-05-2013 дата публикации

Hot dip galvannealed steel sheet and method for producing the same

Номер: US20130129924A1
Автор: Akihiro Miyasaka, Ikuo Kikuchi, Kazumi Nishimura, Kiyokazu Ishizuka
Принадлежит: Nippon Steel Corp

Exemplary embodiments of the present invention can provide a hot dip galvannealed steel sheet which has excellent corrosion resistance, workability, coatability and appearance. The exemplary galvannealed sheet can include an ultra-low carbon steel sheet having a plating layer which includes about 8 to 13% Fe, about 0.05 to 1.0% Ni, about 0.15 to 1.5% Al, and a balance of Zn and unavoidable impurities. An exemplary method for producing a hot dip galvannealed steel sheet is also provided which can include cleaning an annealed ultra-low carbon steel sheet, preplating it with Ni, rapidly heating the sheet in a nonoxidizing or reducing atmosphere, plating the sheet in a galvanization bath containing Al, wiping it, then rapidly reheating it and either cooling the sheet without any soaking time or soaking and holding it for less than 15 seconds and then cooling it.

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Номер записи: 3
30-05-2013 дата публикации

METHOD FOR MANUFACTURING HIGH STRENGTH STEEL SHEET

Номер: US20130133786A1
Автор: Funakawa Yoshimasa, Matsuda Hiroshi, Tanaka Yasushi
Принадлежит: JFE STEEL CORPORATION

A method for manufacturing a high strength steel sheet includes heating a steel sheet containing at least 0.10 mass % of carbon to either a temperature in an austenite single phase region or a temperature in an (austenite+ferrite) two-phase region; cooling the steel sheet to a cooling stop temperature as a target temperature set within a cooling temperature region ranging from Ms to (Ms−150° C.) to allow a portion of non-transformed austenite to proceed to martensitic transformation; retaining a coldest part in a sheet widthwise direction of the steel sheet at a temperature in a temperature range from the cooling stop temperature as the target temperature to (the cooling stop temperature+15° C.) for 15 seconds to 100 seconds; and heating the sheet to a temperature to temper said martensite, wherein “Ms” represents martensitic transformation start temperature and said cooling temperature region is exclusive of Ms and inclusive of (Ms−150° C.). 1. A method for manufacturing a high strength steel sheet comprising:heating a steel sheet containing at least 0.10 mass % of carbon to either a temperature in an austenite single phase region or a temperature in an (austenite+ferrite) two-phase region;cooling the steel sheet to a cooling stop temperature as a target temperature set within a cooling temperature region ranging from Ms to (Ms−150° C.) to allow a portion of non-transformed austenite to proceed to martensitic transformation;retaining a coldest part in a sheet widthwise direction of the steel sheet at a temperature in a temperature range from the cooling stop temperature as the target temperature to (the cooling stop temperature+15° C.) for 15 seconds to 100 seconds; andheating the sheet to a temperature to temper said martensite,wherein “Ms” represents martensitic transformation start temperature and said cooling temperature region is exclusive of Ms and inclusive of (Ms−150° C.).2. The method of claim 1 , further comprising subjecting the steel sheet to a hot dip ...

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Номер записи: 4
20-06-2013 дата публикации

Metal pipe for vehicle piping and method of surface-treating the same

Номер: US20130153077A1
Автор: Juichi Ozawa, Kazuyuki Omote, Takanori Kon
Принадлежит: Sanoh Industrial Co Ltd

Disclosed is a metal pipe which is for vehicle piping and which exhibits high corrosion resistance without the corrosion resistance being strengthened by means of a coating or a resin coating-layer, due to a hot-dip plating coating-layer being formed by applying a hot-dip plating to the pipe. The disclosed metal pipe for vehicle piping has a plating coating-layer formed on the surface of a formed metal pipe, said plating coating-layer being formed by means of hot-dip plating on the surface of the metal pipe, and the plating coating-layer being formed from a hot-dip plating alloy comprising at least 3 weight % Al, 1-15 weight % Mg, and Zn and unavoidable impurities as the remainder.

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Номер записи: 5
20-06-2013 дата публикации

MANUFACTURING EQUIPMENT FOR GALVANIZED STEEL SHEET, AND MANUFACTURING METHOD OF GALVANIZED STEEL SHEET

Номер: US20130156963A1
Автор: Hoshino Masanori, OKADA Nobuyoshi, Sakatoku Atsushi
Принадлежит:

A manufacturing equipment for galvanized steel sheet includes coating tub to coat steel sheet dipped in coating bath wherein the bath including molten zinc and Al is stored at bath temperature T, separating tub to separate by a flotation top-dross by precipitating the top-dross in the bath wherein the bath transferred from the coating tub is stored at bath temperature T lower than T, adjusting tub to dissolve dross wherein the bath transferred from the separating tub is stored at bath temperature T higher than T and Fe of the bath is unsaturated, and circulator to circulate the bath in order of the coating tub, the separating tub, and the adjusting tub. 1. A manufacturing equipment for a galvanized steel sheet , the manufacturing equipment comprising:{'b': '1', 'a coating tub to coat a steel sheet which is dipped in a coating bath, wherein the coating tub has a first temperature controller to keep the coating bath which is a molten metal including a molten zinc and a molten aluminum to a predetermined bath temperature T;'}{'b': 2', '1, 'a separating tub which has a second temperature controller to keep the coating bath transferred through a coating bath outlet of the coating tub to a bath temperature T which is lower than the bath temperature T;'}{'b': 3', '2, 'an adjusting tub which has a third temperature controller to keep the coating bath transferred from the separating tub to a bath temperature T which is higher than the bath temperature T; and'}a circulator to circulate the coating bath in order of the coating tub, the separating tub, and the adjusting tub.2. The manufacturing equipment for the galvanized steel sheet according to claim 1 , the manufacturing equipment further comprising{'b': '1', 'an aluminum concentration analyzer to measure an aluminum concentration A of the coating bath in the coating tub,'}{'b': '1', 'wherein a first zinc-included-metal which includes an aluminum with a concentration higher than the aluminum concentration A of the coating ...

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Номер записи: 6
20-06-2013 дата публикации

MANUFACTURING EQUIPMENT FOR GALVANNEALED STEEL SHEET, AND MANUFACTURING METHOD OF GALVANNEALED STEEL SHEET

Номер: US20130156964A1
Автор: Hoshino Masanori, OKADA Nobuyoshi, Sakatoku Atsushi
Принадлежит: NIPPON STEEL & SUMITOMO METAL CORPORATION

A manufacturing equipment for galvannealed steel sheet includes coating tub to coat steel sheet dipped in coating bath wherein the bath including molten zinc and Al is stored at bath temperature T1, separating tub to separate by flotation top-dross by precipitating the top-dross in the bath wherein the bath transferred from the coating tub is stored at bath temperature T2 lower than T1, Fe of the bath is supersaturated, and Al concentration A2 of the bath is controlled to high concentration by supplying first metal, adjusting tub to adjust Al concentration A3 of the bath by supplying second metal wherein the bath transferred from the separating tub is stored at bath temperature T3 higher than T2, Fe of the bath is unsaturated, and dross is dissolved, and circulator to circulate the bath in order of the coating tub, the separating tub, and the adjusting tub. 1. A manufacturing equipment for a galvannealed steel sheet , the manufacturing equipment comprising:a coating tub to coat a steel sheet which is dipped in a coating bath, wherein the coating tub has a first temperature controller to keep the coating bath which is a molten metal including a molten zinc and a molten aluminum to a predetermined bath temperature T1;a separating tub to separate by a flotation a top-dross which is precipitated by controlling an aluminum concentration A2 of the coating bath transferred from the coating tub to be 0.14 mass % or more by supplying a first zinc-included-metal which includes an aluminum with a concentration higher than an aluminum concentration A1 of the coating bath in the coating tub, wherein the separating tub has a second temperature controller to keep the coating bath transferred through a coating bath outlet of the coating tub to a bath temperature T2 which is lower than the bath temperature T1;an adjusting tub to adjust an aluminum concentration A3 of the coating bath transferred from the separating tub to a concentration which is higher than the aluminum ...

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Номер записи: 7
11-07-2013 дата публикации

Hot Dip Plated Steel Sheet Having Excellent Plating Adhesiveness and Method of Manufacturing the Same

Номер: US20130177780A1
Автор: Han Sang-Kug, Kim Jong-Sang, Lee Young-Ra, Park Joong-Chul, Park Rho-Bum, Seon Pan-Woo, Yoo Hong-Jong
Принадлежит: POSCO

Provided is a hot dip plated steel sheet used in automotive materials and a method of manufacturing the same, and more particularly, to a hot dip plated steel sheet having excellent platability and plating adhesiveness in which a steel sheet containing alloying elements forming oxides on a surface of the steel sheet at high temperatures is used as an underlying steel sheet, and a method of manufacturing the same. According to the present invention, a hot dip plated steel sheet having excellent platability and plating adhesiveness is provided, in which a steel sheet containing alloying elements forming oxides on a surface of the steel sheet at high temperatures is used as an underlying steel sheet, and thus, limitations in added amounts of silicon (Si), manganese (Mn), or aluminum (Al) may be mitigated. Therefore, development of new steels may be accelerated. 1. A hot dip plated steel sheet having excellent plating adhesiveness comprising:a steel sheet containing alloying elements forming oxides on a surface of the steel sheet at high temperatures as an underlying steel sheet; anda plating material plated on the underlying steel sheet,wherein a discontinuous reduced iron (Fe) layer and a Fe-plating material alloy phase are formed at an interface of the underlying steel sheet and a plating layer.2. The hot dip plated steel sheet having excellent plating adhesiveness of claim 1 , wherein the underlying steel sheet comprises one or more alloying elements of silicon (Si) claim 1 , manganese (Mn) claim 1 , and aluminum (Al).3. The hot dip plated steel sheet having excellent plating adhesiveness of claim 1 , wherein the underlying steel sheet is any one of a dual phase (DP) steel claim 1 , a transformation induced plasticity (TRIP) steel claim 1 , a complex phase (CP) steel claim 1 , a martensitic (MART) steel; and a twinning induced plasticity (TWIP) steel.4. The hot dip plated steel sheet having excellent plating adhesiveness of claim 1 , wherein the plating material ...

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Номер записи: 8
18-07-2013 дата публикации

Apparatus for Removing Pollutant Source from Snout of Galvanizing Line

Номер: US20130180076A1
Автор: Jang Tae-In, Jee Chang-Woon, Kim Jung-Kuk, Kweon Yong-Hun
Принадлежит: POSCO

Provided is an apparatus for efficiently removing a pollutant source in a snout of a steel plating line such as a steel galvanizing line. The pollutant removing apparatus includes at least one pollutant collecting member connecting to a snout between a heating furnace and a plating tank, and a contact-free inducer varying magnetic field within the snout to forcibly guide, without contact, a pollutant source of a steel plate or a processing unit to the pollutant collecting member. 1. A pollutant removing apparatus comprising:at least one pollutant collecting member connecting to a snout between a heating furnace and a plating tank; anda contact-free inducer varying magnetic field within the snout to forcibly guide, without contact, a pollutant source of a steel plate or a processing unit to the pollutant collecting member.2. The pollutant removing apparatus of claim 1 , wherein the pollutant source comprises zinc or zinc oxide as a diamagnetic substance to which at least one of drag force and levitation force according to induction current generated by applying alternating current to electromagnets or rotating permanent magnets is applied claim 1 , andthe pollutant collecting member comprises a pollutant collecting pipe connected to the snout, and a suction line connected to the pollutant collecting pipe.3. The pollutant removing apparatus of claim 1 , wherein the contact-free inducer is adjacent to a pollutant collecting pipe of the pollutant collecting member connected to the snout claim 1 , and is disposed on at least one side of a fed steel plate to forcibly guide claim 1 , without contact claim 1 , at least one of zinc ash and dross as the pollutant source within the snout to the pollutant collecting pipe.4. The pollutant removing apparatus of claim 1 , wherein the non-contact inducer is adjacent to a pollutant collecting pipe of the pollutant collecting member connected to the snout claim 1 , and is provided in plurality in a multi-stage on at least one side of ...

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Номер записи: 9
25-07-2013 дата публикации

HIGH TENSILE STRENGTH GALVANIZED STEEL SHEET HAVING EXCELLENT FORMABILITY AND METHOD FOR MANUFACTURING THE SAME

Номер: US20130186523A1
Автор: Ariga Tamako, Funkawa Yoshimasa, Nakajima Katsumi
Принадлежит: JFE STEEL CORPORATION

Described are a high tensile strength galvanized steel sheet with high strength and excellent formability (elongation and stretch-flange ability), and manufacturing method. Tensile strength ≧980 MPa and excellent formability, having (i) defined composition ranges for C, Si, Mn, P, S, N, Al, Ti, V, Solute V, Solute Ti, and Fe and incidental impurities, (ii) microstructure with fine carbides dispersion precipitated therein, the fine carbides containing Ti and V and having the average particle diameter <10 nm, and volume ratio with respect to the entire microstructure ≧0.007, and (iii) matrix as ferrite phase having area ratio with respect to the entire microstructure ≧97%; and hot-dip galvanized/galvannealed coating on a surface of the hot rolled steel sheet. Contents of C, Ti, V, S, N satisfy (1) Ti≧0.10+N/14*48+S/32*48) and (2) 0.8≦(Ti/48+V/51)/(C/12)≦1.2. 1. A high tensile strength galvanized steel sheet having tensile strength of at least 980 MPa and excellent formability , comprising: [ C: 0.07% to 0.13% (inclusive of 0.07% and 0.13%),', 'Si: 0.3% or less,', 'Mn: 0.5% to 2.0% (inclusive of 0.5% and 2.0%),', 'P: 0.025% or less,', 'S: 0.005% or less,', 'N: 0.0060% or less,', {'b': '3', 'Al: 0.06% or less, %p Ti: 0.10% to 0.14% (inclusive of 0.10% and 0.14%),'}, 'V: 0.15% to 0.30% (inclusive of 0.15% and 0.30%),', 'Solute V: 0.04% to 0.1% (inclusive of 0.04% and 0.1%),', 'Solute Ti: 0.05% or less, and remainder as Fe and incidental impurities,, '(i) a composition including by mass %,'}, '(ii) microstructure with fine carbides dispersion precipitated therein, the fine carbides containing Ti and V and having the average particle diameter of less than 10 nm, as well as having volume ratio with respect to the entire microstructure of at least 0.007, and', '(iii) matrix as ferrite phase having area ratio with respect to the entire microstructure of at least 97%; and, 'a hot rolled steel sheet having'}hot-dip galvanized coating or galvannealed coating formed on a surface ...

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Номер записи: 10
08-08-2013 дата публикации

PRODUCTION METHOD OF HOT ROLLED STEEL SHEET AND PRODUCTION METHOD OF HOT-DIP GALVANIZED STEEL SHEET

Номер: US20130202801A1
Автор: SUGIMOTO Yoshiharu, Suzuki Yoshitsugu
Принадлежит: JFE STEEL CORPORATION

A method for producing a hot rolled steel sheet includes a slab heating step of heating a steel slab in a slab heating furnace, a step of hot-rolling the heated steel slab in a rough rolling mill to form a strip and a finish rolling mill, and a coiling step of coiling the strip around a coiler. The atmosphere in steps from the slab heating step to the coiling step is a non-oxidizing atmosphere. The slab steel contains C: 0.01-0.15%, Si: 0.1-1.8%, Mn: 1.0-2.7%, Al: 0.01-1.5%, P: 0.005-0.025%, and S: 0.01% or less, by mass. A hot-dip galvanized steel sheet is produced by pickling the hot rolled steel sheet to remove mill scale, or by pickling the sheet and further cold-rolling the sheet, and subsequently by subjecting the resultant to hot-dip galvanizing. 1. A method for producing a hot rolled steel sheet , comprising:heating a steel slab in a slab heating furnace,hot-rolling the heated steel slab in a rough rolling mill and a finish rolling mill to form a strip,andcoiling the strip in a coiler,wherein the steps from heating the steel slab to coiling the strip are performed in a non-oxidizing atmosphere.2. The method for producing a hot rolled steel sheet according to claim 1 ,{'sub': '2', 'wherein the non-oxidizing atmosphere is a Natmosphere.'}3. The method for producing a hot rolled steel sheet according to claim 2 , wherein the non-oxidizing atmosphere is the Natmosphere containing Hin an amount of 1 to 10% by volume claim 2 , and further has a dew point of −40° C. to +20° C.4. The method for producing a hot rolled steel sheet according to claim 1 , wherein the steel slab contains: C claim 1 , 0.01-0.15% claim 1 , Si: 0.1-1.8% claim 1 , Mn: 1.0-2.7% claim 1 , Al: 0.01-1.5% claim 1 , P: 0.005-0.025% claim 1 , and S: 0.01% or less claim 1 , by mass.5. The method for producing a hot rolled steel sheet according to claim 4 , wherein the steel slab further contains at least one element selected from the group consisting of Cr: 0.05-1.0% claim 4 , Mo: 0.05-1.0% claim 4 ...

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Номер записи: 11
15-08-2013 дата публикации

HIGH-STRENGTH GALVANIZED STEEL SHEET HAVING EXCELLENT FORMABILITY AND CRASHWORTHINESS AND METHOD FOR MANUFACTURING THE SAME

Номер: US20130206288A1
Автор: HASEGAWA Hiroshi, Kaneko Shinjiro, Nagataki Yasunobu, Nakagaito Tatsuya
Принадлежит: JFE STEEL CORPORATION

A high-strength galvanized steel sheet having excellent formability and crashworthiness, including a component composition containing 0.03% to 0.13% C, 1.0% to 2.0% Si, 2.4% to 3.5% Mn, 0.001% to 0.05% P, 0.0001% to 0.01% S, 0.001% to 0.1% Al, 0.0005% to 0.01% N, and 0.0003% to 0.01% B on a mass basis, the remainder being Fe and unavoidable impurities, and a microstructure containing a tempered martensitic phase and a bainitic phase such that the sum of an area fraction of the tempered martensitic phase and an area fraction of the bainitic phase is 30% or more (the area fraction of the martensitic phase is 30% or more in the absence of the bainitic phase), wherein a distance of closest approach of the tempered martensitic phase is 10 μm or less and the contents of C, Mn, and B satisfy (1): 1. A high-strength galvanized steel sheet having excellent formability and crashworthiness , comprising a component composition containing 0.03% to 0.13% C , 1.0% to 2.0% Si , 2.4% to 3.5% Mn , 0.001% to 0.05% P , 0.0001% to 0.01% S , 0.001% to 0.1% Al , 0.0005% to 0.01% N , and 0.0003% to 0.01% B on a mass basis , the remainder being Fe and unavoidable impurities , and a microstructure containing a tempered martensitic phase and a bainitic phase such that the sum of an area fraction of the tempered martensitic phase and an area fraction of the bainitic phase is 30% or more (the area fraction of the martensitic phase is 30% or more in the absence of the bainitic phase) , wherein a distance of closest approach of the tempered martensitic phase is 10 μm or less and the contents of C , Mn , and B satisfy (1):{'br': None, '(% Mn)+1000×(% B)≧35×(% C) \u2003\u2003(1).'}2. The high-strength galvanized steel sheet according to claim 1 , wherein average grain diameter of the tempered martensitic phase is 2.0 μm or more.3. The high-strength galvanized steel sheet according to claim 1 , wherein the component composition further contains at least one selected from the group consisting of 0. ...

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Номер записи: 12
15-08-2013 дата публикации

Metal-Coated Steel Sheet, Galvannealed Steel Sheet, and Method for Manufacturing Same

Номер: US20130209832A1
Автор: Jong-sang Kim, Ju-Youn Lee, Myung-Soo Kim, Young-Ha Kim
Принадлежит: Posco Co Ltd

Provided is a metal coated steel sheet having a coating layer including a metal having a level of Gibbs free energy equal to that of Fe or above and an oxide thereof. Accordingly, the quality of a plated steel sheet may be improved by preventing the generation of bare spots through inhibition of the formation of Mn oxide, Si oxide, or Al oxide on the surface thereof, and simultaneously, the complexity of a manufacturing facility or an increase in manufacturing costs may be minimized. Economic benefits are thus realized.

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Номер записи: 13
22-08-2013 дата публикации

PRODUCTION FACILITY AND PRODUCTION PROCESS FOR HOT DIP GALVANNEALED STEEL PLATE

Номер: US20130213298A1
Автор: Kimura Yoshitaka, Onozawa Hajime
Принадлежит: NIPPON STEEL & SUMITOMO METAL CORPORATION

The present invention provides a production facility of hot dip galvannealed steel plate able to produce hot dip galvannealed steel plate on production conditions optimal at all times despite rapid changes in the steel type, plating deposition, and other external factors, wherein the production facility of hot dip galvannealed steel plate is provided with a soaking/cooling furnace for treating steel plate I running after leaving a rapid heating furnace by at least one of soaking and cooling. Further, the soaking/cooling furnace is configured to enable a change of the ratio in the furnace of the soaking region for soaking steel plate I by soaking means at a soaking temperature of 500° C. to 650° C. and the cooling region for cooling the steel plate I by spray nozzles by a 5° C./sec or more average cooling rate. 1. A production facility of hot dip galvannealed steel plate dipping steel plate in a plating bath , then alloying it , said production facility of hot dip galvannealed steel plate comprising:a rapid heating furnace set above a plating bath tank and having a heating capability of a 30° C./sec or higher heating rate and a 500° C. or higher peak temperature, anda soaking/cooling furnace set above said rapid heating furnace and treating the steel plate leaving said rapid heating furnace by at least one of soaking and cooling,said soaking/cooling furnace being comprised of a soaking region having a hot-air heat source for soaking the steel plate to 500° C. to 650° C. and a cooling region having spray nozzles for cooling the steel plate by a 5° C./sec or more average cooling rate,pairs of hot-air heat sources and pairs of spray nozzles being provided along a vertical or line direction arranged facing two surfaces of the steel plate as it is running,a ratio of lengths of the two regions in the furnace being freely settable,a layout of said soaking region and cooling region being freely settable, andhaving an air curtain in said soaking/cooling furnace wherein said ...

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Номер записи: 14
12-09-2013 дата публикации

HOT-DIP Al-Zn COATED STEEL SHEET AND METHOD FOR MANUFACTURING THE SAME (AS AMENDED)

Номер: US20130236739A1
Автор: Nakamaru Hiroki, YOSHIDA Masahiro
Принадлежит:

There is provided a hot-dip Al—Zn coated steel sheet that has a steel sheet containing Si and Mn as a base steel sheet and has excellent coating appearance and corrosion resistance. The Al—Zn coating layer has an Al content in the range of 20% to 95% by mass. The Al—Zn coating layer has a Ca content in the range of 0.01% to 10% by mass. Alternatively, the Ca and Mg content is in the range of 0.01% to 10% by mass. A steel sheet surface layer within 100 μm from a surface of the base steel sheet directly under the Al—Zn coating layer contains less than 0.060 g/mper surface of an oxide of at least one selected from Fe, Si, Mn, Al, P, B, Nb, Ti, Cr, Mo, Cu, and Ni in total. 1. A hot-dip Al—Zn coated steel sheet that includes an Al—Zn coating layer having an Al content in the range of 20% to 95% by mass on a surface of the steel sheet , wherein the Al—Zn coating layer contains 0.01% to 10% by mass of Ca , and a steel sheet surface layer within 100 μm from a surface of a base steel sheet directly under the Al—Zn coating layer contains less than 0.060 g/mper surface of an oxide of at least one selected from Fe , Si , Mn , Al , P , B , Nb , Ti , Cr , Mo , Cu , and Ni in total.2. A hot-dip Al—Zn coated steel sheet that includes an Al—Zn coating layer having an Al content in the range of 20% to 95% by mass on a surface of the steel sheet , wherein the Al—Zn coating layer contains 0.01% to 10% by mass of Ca and Mg in total , and a steel sheet surface layer within 100 μm from a surface of a base steel sheet directly under the Al—Zn coating layer contains less than 0.060 g/mper surface of an oxide of at least one selected from Fe , Si , Mn , Al , P , B , Nb , Ti , Cr , Mo , Cu , and Ni in total.3. The hot dip Al—Zn coated steel sheet according to claim 1 , wherein the ratio Ca/Zn of the Ca content to the Zn content in the Al—Zn coating layer is 0.50 or less.4. The hot-dip Al—Zn coated steel sheet according to claim 1 , wherein the Al—Zn coating layer contains more than 2.00% by ...

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Номер записи: 15
10-10-2013 дата публикации

FLOW REGULATING MEMBER OF HOT DIP COATING TANK AND CONTINUOUS HOT DIP COATING SYSTEM

Номер: US20130263778A1
Автор: Kawamura Mikio, Kusama Makoto, Nishizawa Koichi, Omodaka Masaaki, Oyama Tsukasa, Yamauchi Yu
Принадлежит:

A flow regulating member of a hot dip coating tank which can suppress stir-up of bottom dross, characterized by being provided with horizontal plates which are respectively arranged horizontally from below two side end parts of a sink roll, which is arranged inside of a coating tank in a rotatable manner, toward outside directions of the sink roll and louvers which are arranged above from the end parts of the respective horizontal plates at positions separated from the two ends of the sink roll and which have flow direction changing members which are slanted so that their heights become gradually higher toward the wall surface sides of the coating tank. 1. A flow regulating member of a hot dip coating tank characterized by being provided withhorizontal plates which are respectively arranged horizontally from below two side end parts of a sink roll, which is arranged inside of a coating tank in a rotatable manner, toward outside directions of the sink roll and,as side members, louvers which are arranged above from the end parts of the respective horizontal plates at positions separated from the two ends of the sink roll and which have flow direction changing members which are slanted so that their heights become gradually higher toward the wall surface sides of the coating tank.2. The flow regulating member of a hot dip coating tank as set forth in claim 1 , characterized in that said louvers have entrance side members which slant so as to gradually increase in height from base ends of said flow direction changing members toward said sink roll direction.3. The flow regulating member of a hot dip coating tank as set forth in or claim 1 , characterized in that said louvers have plated-shaped ribs which hang down from base ends of said flow direction changing members.4. The flow regulating member of a hot dip coating tank as set forth in or claim 1 , characterized in that a pitch between a bottom end of a flow direction changing member of a louver and the bottom end of ...

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Номер записи: 16
17-10-2013 дата публикации

CONTINUOUS ANNEALING METHOD AND A MANUFACTURING METHOD OF HOT-DIP GALVANIZED STEEL STRIPS

Номер: US20130273251A1
Автор: Iri Masato, Nakazato Kazuki, SATO Nobuyuki, Takahashi Hideyuki
Принадлежит: JFE STEEL CORPORATION

An annealing and manufacturing method of hot-dip galvanized steel strips includes suppression of oxide formation of elements in the steel strips. An annealing furnace includes a heating zone, a soaking zone, and a cooling zone in which a portion of gas is introduced to decrease the gas dew point. A gas suction rate Qo in a portion of the cooling zone, a gas suction rate Qo in an upper portion and a gas feed rate Qi in a lower portion of the soaking zone, a gas feed rate Qi in a connection part between the soaking and cooling zones, an atmosphere gas supply rate Qf into the cooling zone and its subsequent zone, an atmosphere gas supply rate Qf into the soaking zone, an internal volume Vs of the soaking zone, and an average furnace temperature Ts of the soaking zone satisfy relationships including 0.3×QfQo', '×Qf, '11−0.81\u2003\u2003(3)'}, {'br': None, ' ...

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Номер записи: 17
24-10-2013 дата публикации

PROCESS FOR THE SURFACE MODIFICATION OF A POLYMER PARTICLE

Номер: US20130277623A1
Автор: Braein Nilsen Cathrine, GOIA Dan V., Halaciuga Ionel, Redford Keith
Принадлежит: CONPART AS

A process for the preparation of an activated polymer particle comprising contacting a polymer particle with at least one polyamine, wherein said polyamine has three or more amino groups, to form a surface treated polymer particle; and applying a catalyst to the surface treated polymer particle to form an activated polymer particle. 1. A process for the preparation of an activated polymer particle comprising contacting a polymer particle with at least one polyamine , wherein said polyamine has three or more amino groups , to form a surface treated polymer particle; andapplying a catalyst to the surface treated polymer particle to form an activated polymer particle.2. The process of claim 1 , further comprising applying at least one metal coating to said activated polymer particle to form a metal coated polymer particle.3. The process of claim 2 , wherein said metal coating is applied using a plating bath comprising ammonia and metal ions wherein the molar ratio of 1:1.5 to 1:5 in molar ratio of metal ions to ammonia.4. The process of claim 3 , wherein said metal ions are nickel ions.5. The process of claim 1 , wherein the polyamine is a linear polyamine or a branched polyamine claim 1 , said linear or branched polyamine having 3 to 10 amino groups.6. The process of claim 1 , wherein the catalyst is Pd claim 1 , Pt or Sn or mixtures thereof.7. The process of claim 2 , wherein said metal coating layer is deposited by at least one of electroless plating or electroplating.8. The process of claim 2 , wherein said metal coating layer comprises Ni claim 2 , Cu or Ag.9. The process of wherein said polymer particle is cross-linked.10. The process of claim 1 , wherein said polymer particle comprises an acrylate polymer or a styrenic polymer.11. The process of claim 1 , wherein said polymer particle comprises a phenol/aldehyde polymer or an epoxy functional polymer.12. The process of claim 1 , wherein said polymer particle does not contain a polyester.13. The process of claim ...

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Номер записи: 18
24-10-2013 дата публикации

HIGH STRENGTH GALVANIZED STEEL SHEET EXHIBITING EXCELLENT FATIGUE PROPERTY AND METHOD FOR MANUFACTURING THE SAME

Номер: US20130280551A1
Автор: Fushiwaki Yusuke, Kariya Nobusuke, Saito Hayato, Yokota Takeshi
Принадлежит: JFE STEEL CORPORATION

A high strength galvanized steel sheet having tensile strength of 590 MPa or more which is excellent in fatigue property in punching work, and a manufacturing method thereof are provided. The microstructure includes a ferrite phase having an average grain diameter of 15 μm or less and an area fraction of 60% or more and a martensite phase having an area fraction of 5 to 40%, and an amount of one or more kinds of oxide selected from a group consisting of Fe, Si, Mn, Al, P, Nb, and Ti generated on a surface layer portion of the steel sheet within 100 μm in a steel-sheet-side depth direction from a surface of a base steel sheet directly below a galvanized layer is less than 0.060 g/mper one-side surface of the steel sheet. 1. A high strength galvanized steel sheet exhibiting excellent fatigue property , the steel sheet having a composition containing by mass % 0.03 to 0.15% C , 2.00% or less Si , 1.0 to 2.5% Mn , 0.050% or less P , 0.0100% or less S , 0.050% or less Al , 0.0050% or less N , 0.010 to 0.100% Ti , 0.010 to 0.100% Nb , 0.0010 to 0.0100% Sb , and Fe and unavoidable impurities as a balance , whereinthe microstructure includes a ferrite phase having an average grain diameter of 15 μm or less and an area fraction of 60% or more and a martensite phase having an area fraction of 5 to 40%, and{'sup': '2', 'an amount of one or more kinds of oxide selected from a group consisting of Fe, Si, Mn, Al, P, Nb and Ti generated in a surface layer portion of the steel sheet within a range from a surface of a base steel sheet directly below a galvanized layer to 100 μm away from the surface in a direction of steel-sheet-side depth is less than 0.060 g/mper one-side surface of the steel sheet.'}2. The high strength galvanized steel sheet exhibiting excellent fatigue property according to claim 1 , wherein the composition further contains by mass % one or more kinds of elements selected from a group consisting of 0.05 to 0.80% Cr claim 1 , 0.01 to 0.10% V claim 1 , 0.01 to 0. ...

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Номер записи: 19
07-11-2013 дата публикации

Flow regulating member of hot dip coating tank and continuous hot dip coating system

Номер: US20130291793A1
Автор: Koichi Nishizawa, Masaaki OMODAKA, Mikio Kawamura, Noboru Furuta, Tsukasa Oyama, Yu Yamauchi
Принадлежит: Nippon Steel and Sumitomo Metal Corp

A flow regulating member of a hot dip coating tank which is able to suppress stir-up of bottom dross, characterized by being provided with flow regulating member horizontal plates which are respectively arranged horizontally from below two side end parts of a sink roll, which is arranged inside of a coating tank in a rotatable manner, toward outside directions of the sink roll and side members which are arranged at positions separated from the two ends of the sink roll, which extend upward from the end parts of the respective horizontal plates, and in which large numbers of dispersion holes are formed, the side members having an aperture ratio of 20 to 80%, and the dispersion holes having a hole diameter of 5 to 50 mm.

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Номер записи: 20
07-11-2013 дата публикации

METHOD FOR MANUFACTURING HOT STAMPED BODY AND HOT STAMPED BODY

Номер: US20130292009A1
Автор: Aso Toshimitsu, Hayashi Kunio, Tanino Hitoshi, Tomokiyo Toshimasa, Wada Ryozo
Принадлежит:

The present invention provides a method for manufacturing a hot stamped body, the method including: a hot-rolling step; a coiling step; a cold-rolling step; a continuous annealing step; and a hot stamping step, in which the continuous annealing step includes a heating step of heating the cold-rolled steel sheet to a temperature range of equal to or higher than Ac° C. and lower than Ac° C.; a cooling step of cooling the heated cold-rolled steel sheet from the highest heating temperature to 660° C. at a cooling rate of equal to or less than 10° C./s; and a holding step of holding the cooled cold-rolled steel sheet in a temperature range of 550° C. to 660° C. for one minute to 10 minutes.

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Номер записи: 21
07-11-2013 дата публикации

HIGH STRENGTH GALVANIZED STEEL SHEET HAVING EXCELLENT DEEP DRAWABILITY AND STRETCH FLANGEABILITY AND METHOD FOR MANUFACTURING THE SAME

Номер: US20130292010A1
Автор: Kimura Hideyuki, Okuda Kaneharu, Sugihara Reiko
Принадлежит: JFE STEEL CORPORATION

A high-strength galvanized steel sheet contains C: 0.010% or more and 0.06% or less, Si: more than 0.5% and 1.5% or less, Mn: 1.0% or more and 3.0% or less, P: 0.005% or more and 0.1% or less, S: 0.01% or less, sol.Al: 0.005% or more and 0.5% or less, N: 0.01% or less, Nb: 0.010% or more and 0.090% or less, and Ti: 0.015% or more and 0.15% or less, on a mass percent basis. The Nb and C contents of the steel satisfy the relation of (Nb/93)/(C/12)<0.20. C* satisfies 0.005≦C*≦0.025. Ferrite constitutes 70% by area ratio or more of the steel sheet. Martensite constitutes 3% by area ratio or more of the steel sheet. C*=C−(12/93)Nb−(12/48){Ti−(48/14)N}, wherein C, Nb, Ti, and N denote the C, Nb, Ti, and N contents of the steel. 1. A high-strength galvanized steel sheet having excellent deep drawability and stretch flangeability , comprising: on a mass percent basis , C: 0.010% or more and 0.06% or less , Si: more than 0.5% and 1.5% or less , Mn: 1.0% or more and 3.0% or less , P: 0.005% or more and 0.1% or less , S: 0.01% or less , sol.Al: 0.005% or more and 0.5% or less , N , 0.01% or less , Nb: 0.010% or more and 0.090% or less , and Ti: 0.015% or more and 0.15% or less , the Nb and C contents (% by mass) of the steel satisfying the relation of (Nb/93)/(C/12)<0.20 , C* given by the following formula (1) satisfying 0.005≦C*≦0.025 , and the remainder being Fe and incidental impurities , wherein ferrite constitutes 70% by area ratio or more , martensite constitutes 3% by area ratio or more , the average r-value (Lankford value) is 1.2 or more , and the hole expansion ratio (λ) is 80% or more:{'br': None, 'C*=C−(12/93)Nb−(12/48){Ti−(48/14)N}\u2003\u2003(1)'}wherein C, Nb, Ti, and N denote the C, Nb, Ti, and N contents (% by mass) of the steel, respectively, provided that if Ti−(48/14)N≦0, then Ti−(48/14)N=0.2. The high-strength galvanized steel sheet having excellent deep drawability and stretch flangeabiity according to claim 1 , further comprising: on a mass percent basis ...

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Номер записи: 22
07-11-2013 дата публикации

HIGH STRENGTH GALVANIZED STEEL SHEET HAVING EXCELLENT UNIFORM ELONGATION AND ZINC COATABILITY AND METHOD FOR MANUFACTURING THE SAME

Номер: US20130295410A1
Автор: Okuda Kaneharu, Ono Yoshihiko, Takahashi Kenji
Принадлежит: JFE STEEL CORPORATION

A high strength galvanized steel sheet is provided comprising steel containing C: 0.06% or more and 0.20% or less, Si: less than 0.50%, Mn: 0.5% or more and less than 2.0%, P: 0.05% or less, S: 0.02% or less, Al: 0.60% or more and 2.00% or less, N: less than 0.004%, Cr: 0.10% or more and 0.40% or less and B: 0.003% or less, satisfying the relationships 0.8≦Mn≦2.0 and Mn+1.3[% Al]≧2.8, and a microstructure containing a ferrite phase and a second phase whose volume fraction is 15% or less, the second phase having a martensite phase whose volume fraction is 3% or more, a retained austenite phase whose volume fraction is 3% or more and a sum of the volume fractions of a pearlite phase and a bainite phase being equal to or less than the volume fraction of the martensite phase and the volume fraction of the retained austenite phase. 1. A high strength galvanized steel sheet having excellent uniform elongation and zinc coatability , which comprises steel having a chemical composition containing , by mass % , C: 0.06% or more and 0.20% or less , Si: less than 0.50% , Mn: 0.5% or more and less than 2.0% , P: 0.05% or less , S: 0.02% or less , Al: 0.60% or more and 2.00% or less , N: less than 0.004% , Cr: 0.10% or more and 0.40% or less , B: 0.003% or less (including 0%) and the balance being Fe and inevitable impurities , where Mndefined below satisfies the relationships 0.8≦Mn≦2.0 and Mn+1.3[% Al]≧2.8 , and having a microstructure containing a ferrite phase as a parent phase and a second phase whose volume fraction is 15% or less , the second phase having a martensite phase whose volume fraction is 3% or more , a retained austenite phase whose volume fraction is 3% or more and a sum of the volume fractions of a pearlite phase and a bainite phase which is equal to or less than the volume fraction of the martensite phase and the volume fraction of the retained austenite phase , and a galvanizing layer on the surface of the steel sheet , {'br': None, 'sub': 'eq', 'Mn=[%Mn]+1. ...

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Номер записи: 23
07-11-2013 дата публикации

HOT-DIP Al-Zn COATED STEEL SHEET

Номер: US20130295411A1
Автор: Nakamaru Hiroki, YOSHIDA Masahiro
Принадлежит: JFE STEEL CORPORATION

There is provided a hot-dip Al—Zn coated steel sheet that has a steel sheet containing Si and Mn as a base steel sheet and has excellent coating appearance and corrosion resistance. The Al—Zn coating layer has an Al content in the range of 20% to 95% by mass. The Al—Zn coating layer has a Ca content in the range of 0.01% to 10% by mass. Alternatively, the Ca and Mg content is in the range of 0.01% to 10% by mass. A steel sheet surface layer within 100 μm from a surface of the base steel sheet directly under the Al—Zn coating layer contains 0.06 to 1.0 g/mper surface of an oxide of at least one selected from Fe, Si, Mn, Al, P, B, Nb, Ti, Cr, Mo, Cu, and Ni in total. 1. A hot-dip Al—Zn coated steel sheet that includes an Al—Zn coating layer having an Al content in the range of 20% to 95% by mass on a surface of the steel sheet , wherein the Al—Zn coating layer contains 0.01% to 10% by mass of Ca , and a steel sheet surface layer within 100 μm from a surface of a base steel sheet directly under the Al—Zn coating layer contains 0.06 to 1.0 g/mper surface of an oxide of at least one selected from Fe , Si , Mn , Al , P , B , Nb , Ti , Cr , Mo , Cu , and Ni in total.2. A hot-dip Al—Zn coated steel sheet that includes an Al—Zn coating layer having an Al content in the range of 20% to 95% by mass on a surface of the steel sheet , wherein the Al—Zn coating layer contains 0.01% to 10% by mass of Ca and Mg in total , and a steel sheet surface layer within 100 μm from a surface of a base steel sheet directly under the Al—Zn coating layer contains 0.06 to 1.0 g/mper surface of an oxide of at least one selected from Fe , Si , Mn , Al , P , B , Nb , Ti , Cr , Mo , Cu , and Ni in total.3. The hot-dip Al—Zn coated steel sheet according to claim 1 , wherein the mass ratio of Ca to Zn (Ca/Zn) in the Al—Zn coating layer is 0.5 or less.4. The hot-dip Al—Zn coated steel sheet according to claim 1 , wherein the Al—Zn coating layer has a Zn content of 10% by mass or more.5. The hot-dip Al— ...

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Номер записи: 24
19-12-2013 дата публикации

Zn-Al-Mg BASED ALLOY HOT-DIP PLATED STEEL SHEET, AND METHOD FOR PRODUCING THE SAME

Номер: US20130337287A1
Автор: Fujiwara Susumu, Hirata Kentaro, Hosomi Kazuaki, Katagiri Yukio, Uranaka Masaaki
Принадлежит: Nisshin Steel CO. Ltd

[Problem] To provide a steel sheet hot-dip-plated with a Zn—Al—Mg-based alloy coating, which is remarkably improved in point of all the burring workability, the liquid metal embrittlement cracking resistance and the corrosion resistance in the welded part thereof, as a steel material favorable for arc-welded structural members. 3. The plated steel sheet for use in forming automobile underbody members having a Zn—Al—Mg-based alloy layer formed by hot-dipping according to claim 1 , wherein the base steel sheet further contains claim 1 , in terms of % by mass claim 1 , at least one of Nb of at most 0.10% and V of at most 0.10%.5. The Zn—Al—Mg-based alloy plated steel sheet according to claim 1 , wherein the composition of the Zn—Al—Mg-based alloy layer formed by hot-dipping on the surface of the base steel sheet comprises claim 1 , in terms of % by mass claim 1 , Al of from 3.0 to 22.0% claim 1 , Mg of from 0.05 to 10.0% claim 1 , Ti of from 0 to 0.10% claim 1 , B of from 0 to 0.05% claim 1 , Si of from 0 to 2.0% claim 1 , Fe of from 0 to 2.0% claim 1 , and a balance of Zn and inevitable impurities.8. The method for producing a plated steel sheet for use in forming automobile underbody members having a Zn—Al—Mg-based alloy layer formed by hot-dipping according to claim 6 , wherein the chemical composition of the base steel sheet further contains claim 6 , in terms of % by mass claim 6 , at least one of Nb of at most 0.10% and V of at most 0.10%.10. The method for producing a Zn—Al—Mg-based alloy plated steel sheet according to claim 6 , wherein the composition of the Zn—Al—Mg-based alloy layer formed by hot-dipping on the surface of the base steel sheet comprises claim 6 , in terms of % by mass claim 6 , Al of from 3.0 to 22.0% claim 6 , Mg of from 0.05 to 10.0% claim 6 , Ti of from 0 to 0.10% claim 6 , B of from 0 to 0.05% claim 6 , Si of from 0 to 2.0% claim 6 , Fe of from 0 to 2.0% claim 6 , and a balance of Zn and inevitable impurities. The present invention ...

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Номер записи: 25
16-01-2014 дата публикации

HOT DIPPED GALVANIZED STEEL SHEET WITH EXCELLENT DEEP DRAWING PROPERTIES AND ULTRA-LOW TEMPERATURE ADHESIVE BRITTLENESS, AND PREPARATION METHOD THEREOF

Номер: US20140017516A1
Автор: Hong Moon-Hi, Lee Ju-Youn, LEE Seung-bok, Park Jun-Woo, Tark Hyun-Jun
Принадлежит: POSCO

Provided is a hot dipped galvanized steel sheet with excellent deep drawing properties and ultra-low temperature adhesive brittleness, wherein the average diameter of crystal particles of a hot-dip galvanizing layer is 150-400 μm, and the degree of the preferred orientation with respect to the (0001) face of the hot-dip galvanizing layer is 3,000-20,000 cps (counter per second), and a preparation method thereof. 1. A hot-dipped galvanized steel sheet with improved deep drawing properties and low-temperature adhesive brittleness , the hot-dipped galvanized steel sheet comprising a zinc plating layer , wherein grains of the zinc plating layer have an average particle diameter of 150 μm to 400 μm , and intensity of preferred orientation of (0001) planes of the zinc plating layer is from 3000 cps (count per second) to 20000 cps.2. The hot-dipped galvanized steel sheet of claim 1 , wherein the grains of the zinc plating layer have a diameter of 30 μm or greater and a diameter deviation equal to or less than 40% of the average particle diameter thereof.3. The hot-dipped galvanized steel sheet of claim 1 , wherein the zinc plating layer comprises 30% or more claim 1 , by volume fraction claim 1 , of crystallographic twins.4. A method of manufacturing a hot-dipped galvanized steel sheet claim 1 , the method comprising:applying molten zinc to a steel sheet;adjusting the amount of the molten zinc applied to the steel sheet;spraying an aqueous solution on the steel sheet;cooling the steel sheet; andperforming a skin pass milling process on the steel sheet,wherein the spraying of the aqueous solution comprises spraying electrically charged demi-water (demineralized water) on the steel sheet.5. The method of claim 4 , wherein the spraying of the electrically charged demi-water is performed using a nozzle at a demi-water injection pressure of 0.3 kgf/cmto 5.0 kgf/cmand an air injection pressure of 0.5 kgf/cmto 7.0 kgf/cm.6. The method of claim 5 , wherein the spraying of the ...

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Номер записи: 26
23-01-2014 дата публикации

ROLL FOR MOLTEN METAL PLATING BATH AND METHOD FOR MANUFACTURING THE SAME

Номер: US20140020622A1
Автор: KOGA Shinichi, Matsuda Taizo, OGAWA Eisuke, SasakiI Makoto
Принадлежит:

It is an object of the present invention to provide a rotor and a method for manufacturing the same that represent an improvement over the prior art. 1. A roll for hot-dip metal coating bath having a body with a substantially cylindrical appearance , at least an outer peripheral surface thereof being formed of a ceramic material , comprising: on the outer peripheral surface of said body , there being formed a groove in a direction crossing the rotation axis; and in the bottom surface of said groove , a plurality of rows of a fine groove being formed along the longitudinal direction of the groove.2. The roll for hot-dip metal coating bath according to claim 1 , wherein said fine groove has an aperture width of 50 to 500 μm.3. The roll for hot-dip metal coating bath according to claim 1 , wherein claim 1 , in place of the fine groove along the longitudinal direction of said groove claim 1 , there are provided a plurality of rows of a fine groove which are formed along the crosswise direction of said groove.4. The roll for hot-dip metal coating bath according to claim 3 , wherein said fine groove has a depth of 30 to 200 μm.5. The roll for hot-dip metal coating bath according to claim 1 , wherein said groove has inclined side walls flaring toward the aperture direction thereof in the sectional view along the crosswise direction of the groove.6. The roll for hot-dip metal coating bath according to claim 5 , wherein said side walls have a shouldered portion.7. The roll for hot-dip metal coating bath according to claim 1 , wherein claim 1 , on the surface of said groove claim 1 , a glass phase is formed.8. The roll for hot-dip metal coating bath according to claim 1 , wherein the top surface of a convex portion between adjacent two of said plurality of rows of the fine groove is a substantially plain surface or a substantially semispherical surface.9. The roll for hot-dip metal coating bath according to claim 1 , wherein claim 1 , in the sectional view along the crosswise ...

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Номер записи: 27
23-01-2014 дата публикации

Method for producing hardened structural elements

Номер: US20140020795A1
Автор: Andreas Sommer, Harald Schwinghammer, Martin Rosner, Siegfried Kolnberger, Thomas Kurz
Принадлежит: VOESTALPINE STAHL GMBH

The invention relates to a method for producing a hardened steel component with a coating composed of zinc or a zinc alloy; a blank is stamped out of a sheet coated with the zinc or zinc alloy, the stamped-out blank is heated to a temperature ≧Ac3 and if need be, kept at this temperature for a predetermined time in order to induce the formation of austenite, and then the heated blank is transferred to a forming die, is formed in the forming die, and is cooled at a speed that is greater than the critical hardening speed and thus hardened; the steel material is adjusted in a transformation-delaying fashion so that a quench hardening through transformation of austenite into martensite takes place at a forming temperature that lies in the range from 450° C. to 700° C.; after the heating and before the forming, an active cooling takes place at >15K/s.

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Номер записи: 28
30-01-2014 дата публикации

Method for producing hardened components with regions of different hardness and/or ductility

Номер: US20140027026A1
Автор: Andreas Sommer, Harald Schwinghammer, Martin Rosner, Siegfried Kolnberger, Thomas Kurz
Принадлежит: VOESTALPINE STAHL GMBH

The invention relates to a method for producing a hardened, steel component with regions of different hardness and/or ductility; a blank is stamped out and either heated in some regions to a temperature ≧Ac 3 , and then transferred to a forming die, is formed, and is cooled at a speed that is greater than the critical hardening speed and thus hardened or is cold formed into the finished shape and the formed blank is heated in some regions to a temperature >Ac 3 and then transferred to a hardening die and is hardened at a speed greater than the critical hardening speed; the steel material is adjusted in a transformation-delaying fashion so that a quench hardening through transformation of austenite into martensite takes place at a forming temperature that lies in the range from 450° C. to 700° C.; after the heating and before the forming, an active cooling takes place at >15 K/s.

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Номер записи: 29
30-01-2014 дата публикации

Evaporating Material and Method of Manufacturing the Same

Номер: US20140027083A1
Автор: Hirose Youichi, Miyagi Kyoutoshi, Nagata Hiroshi, Shingaki Yoshinori
Принадлежит: ULVAC, INC.

There is provided an evaporating material of thin plate shape which can be manufactured at a reduced cost and at high productivity, the evaporating material being adapted for use in enhancing the coercive force of neodymium-iron-boron sintered magnet by heat treatment while evaporating Dy in vacuum or in reduced-pressure inert gas atmosphere. The evaporating material of this invention has a core member made of a fire-resistant metal having a multiplicity of through holes, and is made by melting a rare-earth metal or an alloy thereof so as to get adhered to, and solidified on, the core member. In this case, the above-mentioned adhesion is performed by dipping the core member into a molten bath of the rare-earth metal or an alloy thereof, and pulling it out of the molten bath. 1. A method of manufacturing an evaporating material comprising the steps of:forming a solidified body of a rare-earth metal or of an alloy thereof by melting the rare-earth metal or the alloy thereof, by dipping a base member made of a fire-resistant metal into a molten bath of the rare-earth metal or of the alloy thereof in a state of maintaining the base member at a temperature below the melting temperature of the rare-earth metal or the alloy thereof, and thereafter by pulling up the base member to thereby form on a surface of the base member the solidified body;detaching the solidified body off from the base member; andworking the solidified body thus detached into a plate shape.2. The method of manufacturing the evaporating material according to claim 1 , wherein the base member is columnar shape or prismatic shape.3. The method of manufacturing the evaporating material according to claim 1 , further comprising increasing or decreasing the time of dipping the base member into the molten bath claim 1 , thereby controlling a thickness of the solidified body.4. The method of manufacturing the evaporating material according to claim 1 , further comprising changing the temperature of the base ...

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Номер записи: 30
30-01-2014 дата публикации

HIGH TENSILE STRENGTH HOT-DIP GALVANNEALED STEEL SHEET HAVING EXCELLENT COATED-LAYER ADHESIVENESS AND METHOD FOR PRODUCING SAME

Номер: US20140030547A1
Автор: Chida Minoru, Irie Hiroshi
Принадлежит: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)

A high tensile strength hot-dip galvannealed steel sheet having excellent coated-layer adhesiveness in which the hot-dip galvannealed layer does not peel off from a base steel sheet even in being subjected to working accompanied by sliding and a method for producing the same are provided. In the high tensile strength hot-dip galvannealed steel sheet, a hot-dip galvannealed layer is formed on the surface of the base steel sheet, the base steel sheet contains Si by 0.04-2.5%, and, when the surface roughness of the base steel sheet after the hot-dip galvannealed layer is removed by dissolution with an acid is measured for a plurality of locations by a laser microscope, the arithmetic mean inclination angle (RΔa) is 23.0° or more and the root mean square inclination angle (RΔq) is 29.0° or more in 60% or more of all of the locations measured. 1. A high tensile strength hot-dip galvannealed steel sheet having excellent coated-layer adhesiveness in which a hot-dip galvannealed layer is formed on the surface of a base steel sheet , whereinthe base steel sheet contains Si by 0.04-2.5% (means mass %; hereinafter the same with respect to chemical composition), and,when the surface roughness of the base steel sheet after the hot-dip galvannealed layer is removed by dissolution with an acid is measured for a plurality of locations by a laser microscope, the arithmetic mean inclination angle (RΔa) is 23.0° or more and the root mean square inclination angle (RΔq) is 29.0° or more in 60% or more of all of the locations measured.2. A method for producing the high tensile strength hot-dip galvannealed steel sheet having excellent coated-layer adhesiveness of claim 1 , comprising the steps of;preparing a base steel sheet in which Si is contained by 0.04-2.5% and, when the surface roughness is measured by the laser microscope, the arithmetic mean inclination angle (RΔa) is 6.0° or more and the root mean square inclination angle (RΔq) is 12.0° or more in 60% or more of all of the ...

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Номер записи: 31
05-01-2017 дата публикации

Steel Armor Wire Coatings

Номер: US20170001415A1
Автор: Barmatov Evgeny, Hughes Trevor, Protasov Vadim, Varkey Joseph, Wanjau Paul
Принадлежит:

A wire includes a ferrous core. The ferrous core can be coated. The coatings can include nickel, molybdenum, zinc and Fe. A process of forming a wire can include placing a metal strip alongside a ferrous wire core, bending the strip around the core, and seam welding the strip to form a metal tube around the core. The process of forming a wire can include applying a metal layer to a ferrous metal rod to form a plated rod, placing a metal strip alongside the rod, bending the strip around the rod, and seam welding the strip to form a metal tube around the rod. The process of forming a wire can include coating a ferrous wire core with a layer of nickel, molybdenum or a nickel alloy that circumferentially surrounds the ferrous wire core. 1. A process of forming a wire comprising:coating a ferrous wire core with an interface layer of nickel, molybdenum or a nickel alloy,wherein the interface layer circumferentially surrounds the ferrous wire core; andcoating the interface layer with an outer layer.2. The process of claim 1 , wherein the ferrous wire core is steel.3. The process of claim 1 , wherein the interface layer has a thickness of between 2 and 60 microns.4. The process of claim 1 , wherein outer layer has a thickness of between 1 and 50 microns.5. The process of claim 1 , wherein the outer layer comprises a zinc alloy claim 1 , and wherein the zinc allow comprises:binary Zn—Ni or Zn—Co alloy; orternary Zn—Ni—Co, Zn—Ni—Mo or Zn—Co—Mo alloy.6. The process of claim 1 , further comprising an Fe layer claim 1 , wherein the Fe layer circumferentially surrounds the interface layer and is circumferentially surrounded by the outer layer.7. The process of claim 6 , wherein the Fe layer has a thickness of between 2 and 20 microns.8. The process of claim 1 , further comprising a galvanized zinc coating. The present disclosure relates to steel armor wire strength member coating compositions, structures, and processes.Armor wire strength members used in wireline cables for ...

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Номер записи: 32
05-01-2017 дата публикации

COOLING APPARATUS FOR PLATED STEEL SHEET

Номер: US20170002451A1
Автор: JEUNG Yeon-Chae, Kim Jung-Kuk
Принадлежит:

A cooling apparatus for a plated steel sheet according to the present invention comprises: an injection means for injecting a cooling fluid while facing a steel sheet in progress; and an injection width varying means for varying the injection width of the cooling fluid so as to correspond to the width of the steel sheet, installed at the outside of the injection means so as to not interfere with the injection flow path of the cooling fluid. 1. A plated steel sheet cooling apparatus comprising:a spraying unit opposing a driving steel sheet and spraying a cooling fluid; anda spraying width varying unit varying a spraying width of the cooling fluid to correspond to a width of the steel sheet, and installed outside of the spraying unit so as not to interfere with an spraying flow path of the cooling fluid.2. The plated steel sheet cooling apparatus of claim 1 , further comprising:a spraying distance adjusting unit provided in the spraying unit to adjust a distance between the steel sheet and the spraying unit.3. The plated steel sheet cooling apparatus of claim 1 , wherein the spraying width varying unit includes:a nozzle shield plate installed in a front of the spraying unit, and varying the spraying width of the cooling fluid while being moved far from and near to each other on both sides; anda plate driving unit moving two of the nozzle shield plates.4. The plated steel sheet cooling apparatus of claim 3 , wherein the nozzle shield plate has a rack gear claim 3 , andthe plate driving unit includes:a rotary shaft having a pinion gear engaged with the rack gear; anda rotary driving member rotating the rotary shaft.6. The plated steel sheet cooling apparatus of claim 4 , wherein when a nozzle chamber having spraying nozzles is stacked to be a plurality of nozzle chambers in the spraying unit claim 4 , the nozzle shield plate is disposed to be a plurality of nozzle shield plates to correspond to the plurality of nozzle chambers.7. The plated steel sheet cooling apparatus ...

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Номер записи: 33
04-01-2018 дата публикации

ZINC ALLOY PLATED STEEL MATERIAL HAVING EXCELLENT WELDABILITY AND PROCESSED-PART CORROSION RESISTANCE AND METHOD OF MANUFACTURING SAME

Номер: US20180002797A1
Автор: Kim Jong-Sang, KIM Sang-Heon, KIM Tae-Chul, OH Min-Suk, Sohn Il-Ryoung, YOO Bong-Hwan, YUN Hyun-Chu
Принадлежит:

Zn alloy plated steel material having excellent weldability and processed-part corrosion resistance and a method for production of Zn alloy plated steel material are provided. In the Zn alloy plated steel material comprising base steel material and a Zn alloy plating layer, the Zn alloy plating layer includes, by wt %, Al: 0.1-5.0%, Mg: 0.1-5.0%, as well as a remainder of Zn and inevitable impurities. The Zn alloy plated steel material includes a lower interface layer and an upper interface layer between the base steel material and the Zn alloy plating layer, wherein the lower interface layer is formed on the base steel material and has a dense structure, and the upper interface layer is formed on the lower interface layer and has a network-type or island-type structure. 1. A zinc (Zn) alloy plated steel material , comprising:a base steel and a Zn alloy plating layer, the Zn alloy plating layer including, by wt %, aluminum (Al): 0.1% to 5.0%, magnesium (Mg): 0.1% to 5.0%, Zn as a residual component, and inevitable impurities,wherein between the base steel and the Zn alloy plating layer, a lower interface layer formed on the base steel and having a fine structure and an upper interface layer formed on the lower interface layer and having a network-type structure or an island-type structure are provided.2. The Zn alloy plated steel material of claim 1 , wherein the upper interface layer and the lower interface layer comprise an Fe—Al-based alloy claim 1 , and the Fe—Al-based alloy is provided as one or more type of alloy selected from a group consisting of FeAl claim 1 , FeAland FeAl.3. The Zn alloy plated steel material of claim 1 , wherein an area percentage of the upper interface layer claim 1 , as compared with an area of the lower interface layer claim 1 , is in a range of 10% to 90%.4. The Zn alloy plated steel material of claim 1 , wherein an area percentage of the upper interface layer claim 1 , as compared with an area of the lower interface layer claim 1 , ...

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Номер записи: 34
04-01-2018 дата публикации

Method for Producing a Coated Metal Strip Having an Improved Appearance

Номер: US20180002798A1
Автор: Jean-Michel Mataigne, Luc Diez
Принадлежит: ArcelorMittal SA

A process for manufacturing a coated metal strip having a metallic corrosion protection coating is provided. The process includes passing a metal strip through a molten metal bath comprising from 2 to 8 wt % aluminum, 0 to 5 wt % magnesium, up to 0.3 wt % additional elements, and a balance including zinc and inevitable impurities, to yield a molten metal coated metal strip, wiping the molten metal coated metal strip with a nozzle spraying a gas on either side of the molten metal coated metal strip and cooling the coating in a controlled manner until the coating has completely solidified, to obtain the coated metal strip. A temperature of the molten metal bath is from 350 to 700° C., and the cooling is conducted at a rate less than 15° C./s between a temperature on leaving a unit where the wiping occurs and a start of solidification of the coating, and then at a rate greater than or equal to 15° C./s between a start and an end of solidification of the coating.

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Номер записи: 35
07-01-2021 дата публикации

ZINC ALLOY PLATED STEEL MATERIAL HAVING EXCELLENT CORROSION RESISTANCE AFTER BEING PROCESSED AND METHOD FOR MANUFACTURING SAME

Номер: US20210002751A1
Автор: Kim Jong-Sang, KIM Tae-Chul, Sohn Il-Ryoung
Принадлежит:

Provided is a plated steel material which can be used for an automobile, a household appliance, a building material, and the like and, more particularly, to a zinc alloy plated steel material having excellent corrosion resistance after being processed and a method for manufacturing the same. 1. A zinc alloy plated steel material having excellent corrosion resistance after being processed , comprising:a base steel;a zinc alloy plated layer formed on the base steel; andan inhibition layer formed between the base steel and the zinc alloy plating layer,wherein the zinc alloy plated layer comprises, by wt %, 0.5% to 3.5% of magnesium (Mg), 0.5% to 11.0% of aluminum (Al), 10 ppm to 350 ppm of silicon (Si), a remainder of zinc (Zn) and inevitable impurities, andthe inhibition layer comprises a Si-concentrated layer.2. The steel material of claim 1 , wherein a number of MgSi phases between the base steel and the zinc alloy plating layer claim 1 , having a diameter greater than 1000 nm per 100 μm claim 1 , is 5 or less.3. The steel material of claim 1 , wherein a number of MgSi phases between the base steel and the zinc alloy plating layer claim 1 , having a diameter greater than 500 nm per 100 μm claim 1 , is 5 or less s.4. A method of manufacturing a zinc alloy plated steel material having excellent corrosion resistance after being processed claim 1 , comprising:preparing a hot-rolled steel material having a grain size of 1 μm to 100 μm;cold-rolling the hot-rolled steel material to manufacture a cold-rolled steel material having a surface roughness of 0.2 μm to 1.0 μm and a steepness of 0.2 to 1.2;immersing a base steel, the cold-rolled steel material, into a plating bath comprising, by wt %, 0.5% to 3.5% of magnesium (Mg), 0.5% to 11.0% of aluminum (Al), 10 ppm to 350 ppm of silicon (Si), a remainder of zinc (Zn) and inevitable impurities, to plate; andwiping and cooling the hot-dip zinc alloy plated steel material.5. The method of claim 4 , wherein the plating bath ...

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Номер записи: 36
03-01-2019 дата публикации

METAL-COATED STEEL STRIP

Номер: US20190003028A1
Автор: Liu Qiyang, Renshaw Wayne, Williams Joe
Принадлежит:

An Al—Zn—Si—Mg alloy coated strip that has MgSi particles in the coating microstructure is disclosed. The distribution of MgSi particles is such that a surface region of the coating has only a small proportion of MgSi particles or is at least substantially free of any MgSi particles. 1. An Al—Zn—Si—Mg alloy coated steel strip that comprises a coating of an Al—Zn—Si—Mg alloy on a steel strip , with the microstructure of the coating comprising MgSi particles , and with the distribution of the MgSi particles being such that there is only a small proportion of MgSi particles or at least substantially no MgSi particles in a surface region of the coating.2. The alloy coated steel strip defined in wherein the small proportion of MgSi particles in the surface region of the coating is no more than 10 wt. % of the MgSi particles.4. The alloy coated steel strip defined in wherein the surface region has a thickness that is at least 5% of the total thickness of the coating.5. The alloy coated steel strip defined in wherein the surface region has a thickness that is less than 30% of the total thickness of the coating.6. The alloy coated steel strip defined in wherein at least a substantial proportion of the MgSi particles are in a central region of the coating.7. The alloy coated steel strip defined in wherein the substantial proportion of the MgSi particles in the central region of the coating is at least 80 wt. % of the MgSi particles.8. The alloy coated steel strip defined in wherein the coating thickness is less than 30 μm.9. The alloy coated steel strip defined in wherein the coating thickness is greater than 7 μm.10. The alloy coated steel strip defined in wherein the coating microstructure comprises a region that is adjacent the steel strip that has only a small proportion of MgSi particles or is at least substantially free of any MgSi particles claim 1 , whereby the MgSi particles in the coating microstructure are at least substantially confined to a central or core ...

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Номер записи: 37
03-01-2019 дата публикации

HEAT EXCHANGER FOR HEATING GAS AND USE OF THE HEAT EXCHANGER

Номер: US20190003789A1
Автор: Schneider Karl-Friedrich, Stephan Oskar, Weismantel Matthias
Принадлежит:

The invention relates to a heat exchanger for heating gas to a temperature in the range from 150 to 400° C., wherein the gas is heated by indirect heat transfer and all the surfaces of the walls of the heat exchanger which come into contact with the gas have been hot dip galvanized and the surfaces which come into contact with the gas, after the hot dip galvanization, have been heat treated at a temperature in the range from 400 to 750° C. 1. A heat exchanger for heating gas to a temperature in the range from 150 to 400° C. , the gas being heated by indirect heat transfer , wherein all surfaces of walls of the heat exchanger which come into contact with the gas have been hot dip galvanized and the surfaces which come into contact with the gas , after the hot dip galvanization , have been heat treated at a temperature in the range from 400 to 750° C.2. The heat exchanger according to claim 1 , wherein the heat treatment is conducted over a period of 1 to 5 min.3. The heat exchanger according to claim 1 , wherein the walls of the heat exchanger have been manufactured from sheet steel.4. The heat exchanger according to claim 1 , wherein the heat exchanger is a plate heat exchanger claim 1 , a shell and tube heat exchanger or a spiral heat exchanger.5. The heat exchanger according to claim 1 , wherein the walls which come into contact with the gas have fins.6. The heat exchanger according to used for drying superabsorbent particles.7. The heat exchanger according to used in a belt drier for drying superabsorbent particles.8. The heat exchanger according to claim 7 , wherein the heat exchanger is disposed beneath the drying belt of the belt drier.9. The heat exchanger according to for heating drying gas which is added to a spray tower for production of superabsorbent particles.10. The heat exchanger according to claim 9 , wherein the drying gas is circulated.11. The heat exchanger according to claim 6 , wherein the heat transfer medium used is a thermal oil claim 6 , an ...

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Номер записи: 38
12-01-2017 дата публикации

PLATE CROSSBOW CORRECTION DEVICE AND PLATE CROSSBOW CORRECTION METHOD

Номер: US20170009326A1
Автор: TANBARA Masao, YONEKURA Takashi, YOSHIKAWA Masashi
Принадлежит: PRIMETALS TECHNOLOGIES JAPAN, LTD.

Each of the moving blocks of the plate crossbow correction device includes distance sensors and electromagnets, and plate crossbow is corrected by adjusting electromagnetic force by the electromagnets in accordance with distances to strips. The moving blocks are movable in the horizontal direction and ratios of moving distances of the moving blocks are adjusted to be constant when seen from a central position. 1. A plate crossbow correction device including:a correction mechanism on a front surface side disposed on a front surface side of a conveyed steel plate which adjusts electromagnetic force applied to the steel plate in accordance with a distance to the steel plate and corrects crossbow of the steel plate, anda correction mechanism on a back surface side disposed on a back surface side of the conveyed steel plate which adjusts electromagnetic force applied to the steel plate in accordance with a distance to the steel plate and corrects crossbow of the steel plate,wherein the correction mechanism on the front surface side and the correction mechanism on the back surface side respectively comprisea plurality of moving blocks comprised with distance sensors detecting a distance to the steel plate and electromagnets applying electromagnetic force to the steel plate,a guide structure supporting the plurality of blocks to be movable along a plate width direction of the steel plate, anda moving structure moving a moving block close to an end portion of the steel plate from among the plurality of moving blocks along the guide structure and moving the remaining blocks along the guide structure following the moving block close to the end portion of the steel plate.2. The plate crossbow correction device according to claim 1 ,wherein the moving mechanism includesa servomotor anda rack and pinion mechanism transmitting driving force of the servomotor to the plurality of moving blocks and moving the plurality of moving blocks.3. The plate crossbow correction device ...

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Номер записи: 39
11-01-2018 дата публикации

METHOD FOR APPLYING A METAL PROTECTIVE COATING TO A SURFACE OF A STEEL PRODUCT

Номер: US20180010224A1
Автор: GIZA Miroslaw, KLÜPPEL Ingo, Norden Martin
Принадлежит: THYSSENKRUPP STEEL EUROPE AG

A method for applying a metallic protective coating to a surface of a steel product, where another surface is to remain free from the metallic protective coating, may involve applying the metallic protective coating by hot dip coating in a hot dip coating bath. A preliminary coating may be applied to the surface that is to remain free from the metallic protective coating prior to the hot dip coating. The preliminary coating may include SiOand may prevent the metallic protective coating from adhering to the intended surface during hot dip coating. Thus one surface of a steel product may be provided with a metallic protective coating, and another surface of the steel product may be kept free from the protective coating, all with a minimum of cost and complexity and with optimized resource economics. Further, the preliminary coating, deposited from a gas phase to that surface of the steel product that is to be kept free from the metallic protective coating, may be a layer that includes amorphous silicon dioxide and has a layer thickness of 0.5-500 nm.” 115-. (canceled)16. A method for applying a metallic protective coating to a first surface of a steel product , wherein a second surface of the steel product is to remain free from the metallic protective coating , the method comprising:applying a preliminary coating comprising SiO2 to the second surface of the steel product, the preliminary coating for preventing the metallic protective coating from adhering to the second surface, wherein the preliminary coating is deposited from a gas phase to the second surface, wherein the preliminary coating applied to the second surface is a layer that comprises amorphous silicon dioxide and has a layer thickness of 0.5-500 nm; andapplying the metallic protective coating by hot dip coating in a hot dip coating bath after the preliminary coating has been applied to the second surface of the steel product.17. The method of comprising depositing the preliminary coating by flame ...

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Номер записи: 40
11-01-2018 дата публикации

Apparatus for removing top dross of plating pot

Номер: US20180010225A1
Автор: Tae In JANG, Yeon Chae JEUNG, Yong Hun KWEON
Принадлежит: Posco Co Ltd

The present invention relates to an apparatus for removing top dross of a plating pot where a snout and an air knife are arranged, the snout being arranged between the front end region and the rear end region of a plating pot. The present invention provides an apparatus for removing top dross of a plating pot, the apparatus comprising: a first wiping means which is mounted on the plating pot and is arranged between the snout and the air knife so as to be movable in the width direction of the plating pot; a second wiping means which is mounted on the plating pot and is rotatably arranged between the air knife and the first wiping means so as to transfer, to the rear end region, the top dross transferred by the first wiping means; and a third wiping means which is mounted on the plating pot and is rotatably arranged between the air knife and the front end region so as to transfer the top dross to the front end region. Thereby, the present invention provides an advantageous effect of effectively removing dross.

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Номер записи: 41
14-01-2021 дата публикации

HIGH-STRENGTH STEEL SHEET AND METHOD FOR MANUFACTURING SAME

Номер: US20210010101A1
Автор: AOYAMA Mai, Endo Kazuki, Funakawa Yoshimasa, Kawasaki Yoshiyasu, Toji Yuki
Принадлежит: JFE STEEL CORPORATION

A high-strength steel sheet includes a steel structure with: ferrite being 35% to 80% and tempered martensite being greater than 5% and 20% or less in terms of area fraction; retained austenite being 8% or more in terms of volume fraction; an average grain size of: the ferrite being 6 μm or less; and the retained austenite being 3 μm or less; a value obtained by dividing an area fraction of blocky austenite by a sum of area fractions of lath-like austenite and the blocky austenite being 0.6 or more; a value obtained by dividing, by mass %, an average Mn content in the retained austenite by an average Mn content in the ferrite being 1.5 or more; and a value obtained by dividing, by mass %, an average C content in the retained austenite by an average C content in the ferrite being 3.0 or more. 18.-. (canceled)9. A high-strength steel sheet comprising:a component composition including: by mass %, C: 0.030% to 0.250%; Si: 0.01% to 3.00%; Mn: 3.10% to 4.20%; P: 0.001% to 0.100%; S: 0.0001% to 0.0200%; N: 0.0005% to 0.0100%; Al: 0.010% to 1.200%; and balance Fe and inevitable impurities; and ferrite being 35% to 80% and tempered martensite being greater than 5% and 20% or less in terms of area fraction;', 'retained austenite being 8% or more in terms of volume fraction;', 'an average grain size of the ferrite being 6 μm or less;', 'an average grain size of the retained austenite being 3 μm or less;', 'a value obtained by dividing an area fraction of blocky austenite by a sum of area fractions of lath-like austenite and the blocky austenite being 0.6 or more;', 'a value obtained by dividing an average Mn content, by mass %, in the retained austenite by an average Mn content, by mass %, in the ferrite being 1.5 or more; and', 'a value obtained by dividing an average C content, by mass %, in the retained austenite by an average C content, by mass %, in the ferrite being 3.0 or more., 'a steel structure with10. The high-strength steel sheet according to claim 9 , wherein the ...

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Номер записи: 42
14-01-2021 дата публикации

Zinc alloy-plated steel having excellent corrosion resistance and surface smoothness, and manufacturing method therefor

Номер: US20210010106A1
Автор: Heung-Yun Kim, Myung-Soo Kim
Принадлежит: Posco Co Ltd

Provided is a plated steel to be used for automobiles, electric home appliances, building materials and the like and, more specifically, to a zinc alloy-plated steel having excellent corrosion resistance and surface smoothness, and a method for manufacturing the same.

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Номер записи: 43
10-01-2019 дата публикации

SURFACE-TREATED STEEL SHEET AND METHOD FOR PRODUCING SURFACE-TREATED STEEL SHEET

Номер: US20190010613A1
Автор: Morishita Atsushi, SHOJI Hiromasa, TOSHIN Kunihiko, UEDA Kohei
Принадлежит: NIPPON STEEL & SUMITOMO METAL CORPORATION

The object of the invention is to provide a surface-treated steel sheet having a coating having fine adhesiveness to an adhesive on the surface and having excellent corrosion resistance, and a production method thereof. Provided is a surface-treated steel sheet including: a steel sheet; a plated layer containing zinc on the steel sheet; and a coating on the plated layer, wherein the coating contains an acrylic resin, zirconium, vanadium, phosphorus and cobalt, and the acrylic resin has an area ratio of 80 to 100 area % in an area from a surface to a thickness of one-fifth of a film thickness of the coating, and an area ratio of 5 to 50 area % in an area including areas from the film thickness center of the coating to a thickness of one-tenth of the film thickness toward the surface side and toward the plated layer side. 1. A surface-treated steel sheet comprising:a steel sheet;a plated layer that contains zinc and is formed on the steel sheet; anda coating formed on the plated layer,wherein the coating contains an acrylic resin, zirconium, vanadium, phosphorus and cobalt,the acrylic resin has an area ratio of 80 to 100 area % in an area from a surface of the coating to a thickness of one-fifth of a film thickness of the coating on a cross-section, andthe acrylic resin has an area ratio of 5 to 50 area % in an area including an area from the film thickness center of the coating to a thickness of one-tenth of the film thickness toward the surface side and an area from the film thickness center to a thickness of one-tenth of the film thickness toward the plated layer side.2. The surface-treated steel sheet according to claim 1 , whereina plurality of island projections is present on the surface of the coating in a planar view, andwhen three or more virtual straight lines each having a length of equal to or more than 10 μm and extending in any direction are drawn on any positions on the surface of the coating in a planar view, a length of each projection is 0.1 to 5.0 μ ...

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Номер записи: 44
09-01-2020 дата публикации

METHOD AND DEVICE FOR CONTROLLING FLOW OF LIQUID ZINC IN ZINC POT FOR HOT-DIP GALVANIZATION

Номер: US20200010943A1
Автор: GU Tingquan, HOU Xiaoguang, JIN Xinyan, Li Shanqing, Lu Yong, Qian Hongwei, Shen Jun, WANG Cunbing, Wang Hui, Xu Hao, Yang Bing, Yu Lei, Zhou Yueming
Принадлежит:

Disclosed are a method and a device for controlling flow of liquid zinc () in a zinc pot () for hot-dip galvanization. Under the blowing effects of an air knife above the zinc pot () for hot-dip galvanization onto strip steel (), the liquid zinc () diffuses and flows outwards to zones (zones I, II, III and IV) comprising the left side, the right side, the front end of the zinc pot, respectively, and a zone between the strip steel () and a furnace snout (), and surface dross rapidly generated on the surface of the liquid zinc () is driven to flow outwards to the zones (zones I, II, III and IV). On edge sides of the zones (zones I, II, III and IV), travelling magnetic field generators () are arranged in multiple sections above the surface of the liquid zinc () in the zinc pot (), so as to excite a travelling magnetic field to generate an electromagnetic driving force on the liquid zinc () to drive the flow of the liquid zinc (). The flow of the liquid zinc () caused by the travelling magnetic field generators () is engaged with the blowing flow of the air knife, driving the surface liquid zinc () in the zinc pot () to flow in order towards a rear end (zone V) of the zinc pot (). The surface dross floating on the surface of the liquid zinc () is driven by the flowing liquid zinc () to flow in a controlled direction. 1. A method for controlling flow of liquid zinc in a zinc pot for hot-dip galvanization , wherein under blowing effects of an air knife above the zinc pot for hot-dip galvanization onto strip steel , the liquid zinc diffuses and flows outwards to zones comprising the left side , the right side , the front end of the zinc pot , respectively , and a zone between the strip steel and a furnace snout , and surface dross rapidly generated on the surface of the liquid zinc is driven to flow outwards to the zones;and wherein on edge sides of the zones, traveling wave magnetic field generators are arranged in multiple sections above the surface of the liquid zinc in ...

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Номер записи: 45
15-01-2015 дата публикации

CONTINUOUS ANNEALING FURNACE AND CONTINUOUS ANNEALING METHOD FOR STEEL STRIPS

Номер: US20150013851A1
Автор: Takahashi Hideyuki
Принадлежит: JFE STEEL CORPORATION

The invention provides a vertical annealing furnace including a heating zone and a soaking zone without any partition wall therebetween. The furnace has furnace-to-refiner gas suction openings disposed in a lower portion of a joint between the soaking zone and a cooling zone and in the heating zone and/or the soaking zone except a region extending 6 m in a vertical direction and 3 m in a furnace length direction both from a steel strip inlet at a lower portion of the heating zone. The furnace has refiner-to-furnace gas ejection openings disposed in a region in the joint between the soaking zone and the cooling zone, the region being located above the pass line in the joint, and in a region in the heating zone located above 2 m below the center of upper hearth rolls in the vertical direction. 1. A continuous annealing furnace for a steel strip comprising a heating zone , a soaking zone and a cooling zone disposed in this order and configured to transport the steel strip in upward and/or downward directions , a joint connecting the soaking zone and the cooling zone being disposed at an upper portion of the furnace , the heating zone and the soaking zone having no partition wall therebetween ,the furnace being a vertical annealing furnace and being configured such that an atmosphere gas is supplied from outside the furnace into the furnace, the gas in the furnace is discharged through a steel strip inlet at a lower portion of the heating zone while part of the gas in the furnace is suctioned and introduced into a refiner equipped with an oxygen removal device and a dehumidifier to lower the dew point by the removal of oxygen and water in the gas, the refiner being disposed outside the furnace, and the gas with the lowered dew point is returned into the furnace,the furnace having furnace-to-refiner gas suction openings disposed in a lower portion of the joint between the soaking zone and the cooling zone and at least one of in the heating zone and the soaking zone, the ...

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Номер записи: 46
21-01-2016 дата публикации

HIGH STRENGTH HOT DIP GALVANISED COMPLEX PHASE STEEL STRIP

Номер: US20160017472A1
Автор: Ennis Bernard Leo
Принадлежит:

High strength hot dip galvanised complex phase steel strip, in mass percent, of the following elements: 0.13-0.19% C, 1.70-2.50% Mn, max 0.15% Si, 0.40-1.00% Al, 0.05-0.25% Cr, 0.01-0.05% Nb, max 0.10% P, max 0.004% Ca, max 0.05% S, max 0.007% N; and optionally at least one of the following elements: max 0.50% Ti, max 0.40% V, max 0.50% Mo, max 0.50% Ni, max 0.50% Cu, max 0.005% B, the balance being Fe and inevitable impurities; wherein 0.40%1.90%; and having a complex phase microstructure, in volume percent, including 8-12% retained austenite, 20-50% bainite, less than 10% martensite, the remainder being ferrite; method of producing same.

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Номер записи: 47
16-01-2020 дата публикации

PRETREATMENT OF WELD FLANGES TO MITIGATE LIQUID METAL EMBRITTLEMENT CRACKING IN RESISTANCE WELDING OF GALVANIZED STEELS

Номер: US20200016679A1
Автор: Karagoulis Michael J., MELLAS Spyros P., Teng Zhenke, Wang Pei-Chung
Принадлежит:

A method to mitigate liquid metal embrittlement cracking in resistance welding of galvanized steels includes modifying at least one face of a steel member to create a first workpiece by: applying a zinc containing material in a first layer to the at least one face of the steel member; and spraying a second layer of a copper containing material onto the first layer of the zinc containing material. The at least one face of the first workpiece is abutted to a second workpiece of a steel material. A resistance welding operation is performed to join the first workpiece to the second workpiece. A temperature of the resistance welding operation locally melts the zinc containing material and the copper containing material to create a brass alloy of the zinc containing material and the copper containing material. 1. A method for pretreatment to mitigate liquid metal embrittlement cracking for welding of coated steels , including galvanized , galvannealed , and ZAM (zinc , aluminum , magnesium alloy) steels , comprising:layering a zinc containing material and a copper containing material on at least one face of a steel member to create a first workpiece;abutting the at least one face of the first workpiece to a second workpiece of a steel material; andperforming a welding operation to join the first workpiece to the second workpiece wherein a temperature of the welding operation creates an alloy of the zinc containing material and the copper containing material.2. The method of claim 1 , wherein during the layering step the zinc containing material is directly applied onto the steel member and the copper containing material is subsequently applied onto the zinc containing material.3. The method of claim 1 , wherein during the layering step the copper containing material is directly applied onto the steel member and the zinc containing material is subsequently applied onto the copper containing material.4. The method of claim 1 , further including applying the copper ...

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Номер записи: 48
16-01-2020 дата публикации

COLD ROLLED STEEL SHEET AND METHOD OF MANUFACTURING THE SAME

Номер: US20200017933A1
Автор: HONDA Yuma, Ono Yoshihiko
Принадлежит:

A cold rolled steel sheet having a high strength, an aging resistance, a high yield ratio and a small anisotropy of tensile strength is obtained by hot rolling and cold rolling a steel material containing in percent by mass C: 0.06-0.14%, Si: less than 0.50%, Mn: 1.6-2.5%, Nb: not more than 0.080% (including 0%), Ti: not more than 0.080% (including 0%), provided that Nb and Ti are contained in an amount of 0.020-0.080% in total, subjecting a cold rolled steel sheet continuous annealing including steps of soaking-annealing at a temperature of 840-940° C. for a holding time of 30-120 seconds, cooling from the soaking temperature to 600° C. at a rate of not less than 5° C./s, retaining in a temperature range of 600-500° C. for 30-300 seconds and then conducting a secondary cooling to apply such a steel structure that martensite is finely dispersed into ferrite base. 110-. (canceled)11. A cold rolled steel sheet havinga chemical composition comprising C: 0.06-0.14 mass %, Si: less than 0.50 mass %, Mn: 1.6-2.5 mass %, P: not more than 0.10 mass %, S: not more than 0.020 mass %, Al: 0.01-0.10 mass %, N: not more than 0.010 mass %, Nb: not more than 0.080 mass % (including 0 mass %), Ti: not more than 0.080 mass % (including 0 mass %), provided that Nb and Ti are contained in an amount of 0.020-0.080 mass % in total, and the remainder being Fe and inevitable impurities,a steel structure that an area ratio of ferrite is not less than 85%; an area ratio of martensite is 3-15%; an area ratio of unrecrystallized ferrite is not more than 5%; an average crystal grain size d of the ferrite is 2-8 μm; and a ratio (L/d) of an average value L (μm) among intervals between martensite grains closest to each other to the average crystal grain size d of the ferrite is 0.20-0.80, and{'sub': D', 'C', 'D', 'C, 'mechanical properties wherein a yield ratio YR in a direction perpendicular to a rolling direction is not less than 0.68 and a ratio (TS/TS) of tensile strength TSin a direction of ...

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Номер записи: 49
16-01-2020 дата публикации

HOT-DIP GALVANIZED STEEL MATERIAL HAVING EXCELLENT WELDABILITY AND PRESS WORKABILITY AND MANUFACTURING METHOD THEREFOR

Номер: US20200017946A1
Автор: KIM Sang-Heon, LEE Suk-Kyu, MIN Kwang-Tai, SONG Yon-Kyun
Принадлежит:

Provided are a hot-dipped galvanized steel material and a method for manufacturing the same. The hot-dipped galvanized steel material comprises an iron substrate and a hot-dipped galvanizing layer formed on the iron substrate, wherein the hot-dipped galvanizing layer comprises, by wt %, 0.01 to 0.5% of Al, 0.01 to 1.5% of Mg, 0.05 to 1.5% of Mn, 0.1 to 6% of Fe, and the balance of Zn and inevitable impurities, with a Zn—Fe—Mn based alloy phase present at the interface between the iron substrate and the hot-dipped galvanizing layer, and an area ratio of the Zn—Fe—Mn-based alloy phase to the hot-dipped galvanizing layer ranging from 1 to 60%. 1. A hot-dip galvanized steel material comprising:base steel and a hot-dip galvanized layer disposed on the base steel,wherein the hot-dip galvanized layer comprise, by wt %, 0.01 to 0.5% of Al, 0.01 to 1.5% of Mg, 0.05 to 1.5% of Mn, 0.1 to 6% of Fe, and a balance of Zn and inevitable impurities, and a Zn—Fe—Mn based alloy phase is present at an interface between the base steel and the hot-dip galvanized layer, and a ratio of an area of the Zn—Fe—Mn based alloy phase to an area of the hot-dip galvanized layer is 1% to 60%.2. The hot-dip galvanized steel material of claim 1 , wherein the Zn—Fe—Mn based alloy phase is (Fe claim 1 ,Mn) Zn.3. The hot-dip galvanized steel material of claim 1 , wherein the base steel comprises P in an amount less than 0.01%.4. The hot-dip galvanized steel material of claim 1 , wherein the hot-dip galvanized layer further comprises 0.0001 to 1 wt % in total of one or more selected from a group consisting of K claim 1 , Ca claim 1 , and Li.5. The hot-dip galvanized steel material of claim 1 , wherein one-side coating amount of the hot-dip galvanized layer is 10 to 200 g/m.6. A method of manufacturing a hot-dip galvanized steel material claim 1 , the method comprising:preparing a hot bath comprising, by wt %, 0.01 to 0.15% of Al, 0.01 to 1.0% of Mg, 0.05 to 1.5% of Mn, and a balance of Zn and inevitable ...

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Номер записи: 50
21-01-2021 дата публикации

ALLOYED HOT-DIP GALVANIZED STEEL SHEET AND ALLOYED HOT-DIP GALVANIZED STEEL SHEET PRODUCTION METHOD

Номер: US20210017621A1
Автор: HOSHIKA Tetsuji, IKEDA Muneaki, NAKAYA Michiharu
Принадлежит: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)

In one aspect of the present invention, a hot-dip galvannealed steel sheet includes a steel sheet and a hot-dip galvannealed layer on the surface of the steel sheet. The steel sheet has a predetermined composition and has an average oxygen concentration of 0.10 mass % or less in the region of 1 μm from the interface between the steel sheet and the hot-dip galvannealed layer toward the steel sheet. The metal microstructure of the steel sheet at a position of t/4 where t represents the sheet thickness of the hot-dip galvannealed steel sheet includes 50 to 85 area % of martensite, 15 to 50 area % of bainite, and 5 area % or less of ferrite. 1. A hot-dip galvannealed steel sheet comprising:a steel sheet; and a hot-dip galvannealed layer on a surface of the steel sheet, wherein the steel sheet comprises, in mass %,C: 0.10% or more and 0.25% or less,Si: more than 0% and 0.50% or less,Mn: more than 2.0% and 3.5% or less,P: more than 0% and 0.1% or less,S: more than 0% and 0.05% or less,Al: 0.01% or more and 0.10% or less,Ti: more than 0% and 0.1% or less,B: 0.0020% or more and 0.0050% or less,N: more than 0?/ and 0.01% or less,Cr: more than 0% and 0.5% or less, andMo: more than 0% and 0.5% or less,Wherein the steel sheet has an average oxygen concentration of 0.10 mass % or less in a region of 1 μm from an interface between the steel sheet and the hot-dip galvannealed layer toward the steel sheet, andwherein a metal microstructure of the steel sheet at a position of t/4, where t represents a sheet thickness of the hot-dip galvannealed steel sheet, comprises 50 to 85 area % of martensite, 15 to 50 area % of bainite, and 5 area % or less of ferrite.2. A method for manufacturing the hot-dip galvannealed steel sheet of claim 1 , the method comprising:{'b': '1100', 'soaking a steel having a composition of the steel sheet at ° C. to 1300° C., hot-rolling the steel at a finishing temperature of 850° C. to 950° C., and coiling the hot-rolled steel at 630° C. to 680° C., to provide ...

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Номер записи: 51
21-01-2021 дата публикации

HOT DIP GALVANIZED STEEL SHEET AND HOT DIP GALVANNEALED STEEL SHEET

Номер: US20210017622A1
Автор: Haga Jun, HAYASHI Koutarou, Hayashi Kunio, Kameda Masaharu, KAWATA Hiroyuki, Sano Kohichi, Uenishi Akihiro
Принадлежит: NIPPON STEEL CORPORATION

A hot dip galvanized steel sheet and hot dip galvannealed steel sheet improved in uniform ductility and local ductility, yield strength and tensile strength, and low temperature impact property, characterized by having a predetermined chemical composition, having a metal structure containing, by volume %, retained austenite: over 5.0% and tempered martensite: over 5.0%, having retained austenite containing C: 0.85 mass % or more, and having a ratio [C]/[P]of an amount of segregation of C (number of atoms/nm): [C]to an amount of segregation of P (number of atoms/nm): [P]at prior austenite grain boundaries of 4.0 or more. 1. A hot dip galvanized steel sheet having a hot dip galvanized layer on the surface ,a chemical composition of the steel sheet comprising, by mass %,C: 0.03 to 0.70%,Si: 0.25 to 2.50%,Mn: 1.00 to 5.00%,P: 0.0005 to 0.100%,S: 0.010% or less,sol. Al: 0.001 to 2.500%,N: 0.020% or less,B: 0 to 0.0200%,Ti: 0 to 0.30%,Nb: 0 to 0.30%,V: 0 to 0.30%,Cr: 0 to 2.00%,Mo: 0 to 2.00%,Cu: 0 to 2.00%,Ni: 0 to 2.00%,Ca: 0 to 0.010%,Mg: 0 to 0.010%,REM: 0 to 0.10%,Bi: 0 to 0.050% anda balance of Fe and unavoidable impurities,a metal structure of the steel sheet comprising, by volume %, retained austenite: over 5.0% and tempered martensite: over 5.0% and the retained austenite contains C: 0.85 mass % or more, and{'sub': γgb', 'γgb', 'γgb', 'γgb, 'sup': 2', '2, 'a ratio [C]/[P]of an amount of segregation of C (number of atoms/nm): [C]to an amount of segregation of P (number of atoms/nm): [P]at prior austenite grain boundaries in the metal structure of the steel sheet being 4.0 or more.'}2. The hot dip galvanized steel sheet according to claim 1 , whereina chemical composition of the steel sheet comprises, by mass %, at least one ofB: 0.0002 to 0.0200%,Ti: 0.001 to 0.30%,Nb: 0.001 to 0.30%,V: 0.001 to 0.30%,Cr: 0.001 to 2.00%,Mo: 0.001 to 2.00%,Cu: 0.001 to 2.00%,Ni: 0.001 to 2.00%,Ca: 0.0001 to 0.010%,Mg: 0.0001 to 0.010%,REM: 0.0001 to 0.10%, andBi: 0.0001 to 0.050%.3 ...

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Номер записи: 52
16-01-2020 дата публикации

ALLOY-PLATED STEEL MATERIAL HAVING EXCELLENT CRACK RESISTANCE, AND METHOD FOR MANUFACTURING SAME

Номер: US20200017947A1
Автор: Kim Jong-Sang, KIM Tae-Chul, Sohn Il-Ryoung
Принадлежит:

Provided is a Zn—Al—Mg-based alloy-plated steel material that can be used in automobiles and home appliances and the like and, more particularly, to a Zn—Al—Mg-based alloy-plated steel material that can suppress the generation of cracks in a plating layer that are generated during processing. 1. An alloy plated steel material having excellent crack resistance , comprising:a base iron, and a zinc alloy plated layer formed on at least one surface of the base iron,wherein the zinc alloy plated layer comprises, by weight %, 0.5 to 2.5% of Mg, 0.5 to 3.0% of Al, and a balance of Zn and other inevitable impurities, andwherein the zinc alloy plated layer comprises a Zn single phase and a Zn and Mg mixed phase, and in the Zn and Mg mixed phase, an Zn phase and an Mg—Zn alloy phase have a lamella structure, and an average width of the lamella structure is 1.5 μm or less.2. The alloy plated steel material of claim 1 , wherein a length direction of the lamella structure is formed at an angle of 45° or greater to a vertical direction of the base iron and the zinc alloy plated layer.3. The alloy plated steel material of claim 2 , wherein the lamella structure of which a length direction is formed at an angle of 45° or greater to a vertical direction of the base iron and the zinc alloy plated layer is 30 to 100% of an overall lamella structure.4. The alloy plated steel material of claim 1 , wherein hardness of a Zn phase of the zinc alloy plated layer is Hv 80 to 130 claim 1 , and hardness of an Mg—Zn alloy phase is Hv 250 to 300.5. A method of manufacturing an alloy plated steel material having excellent crack resistance claim 1 , comprising:preparing a zinc alloy plating bath comprising, by weight %, 0.5 to 2.5% of Mg, 0.5 to 3.0% of Al, and a balance of Zn and other inevitable impurities;performing a plating process by submerging a base iron in the zinc alloy plating bath; andextracting a steel material from the zinc alloy plating bath and cooling the steel material until a ...

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Номер записи: 53
21-01-2021 дата публикации

GALVANIZED STEEL SHEET AND METHOD FOR MANUFACTURING THE SAME

Номер: US20210017636A1
Автор: KIZU Taro, Moriyasu Noriaki, NABESHIMA Shigeyuki, SASAKI Kana, TAHARA Kazunori
Принадлежит: JFE STEEL CORPORATION

There is provided a galvanized steel sheet more highly excellent in terms of punchability. The steel sheet has a specified chemical composition and a microstructure including a ferrite phase and a tempered bainite phase in a total amount of 95% or more in terms of area ratio, in which the average grain diameter of the microstructure is 5.0 μm or less, the amount of Fe precipitated is 0.10 mass % or more, the amount of Ti, Nb, and V precipitated in the form of precipitates having a grain diameter of less than 20 nm is 0.025 mass % or more in terms of precipitate C equivalent, and half or more of precipitates having a grain diameter of less than 20 nm are formed at random. 1. A galvanized steel sheet having a chemical composition comprising , by mass %:C: 0.08% to 0.20%,Si: 0.5% or less,Mn: 0.8% to 1.8%,P: 0.10% or less,S: 0.030% or less,Al: 0.10% or less,N: 0.010% or less, [{'br': None, 'C*=(Ti/48+Nb/93+V/51)×12 \u2003\u2003(1),'}, 'where, the atomic symbols in equation (1) respectively denote the contents by mass % of the corresponding elements, and, 'fat least one selected from the group consisting of Ti: 0.01% to 0.3%, Nb: 0.01% to 0.1%, and V: 0.01% to 1.0%, in which C* derived using equation (1) is 0.07 or morea balance of Fe and inevitable impurities,wherein the steel sheet has a microstructure including a ferrite phase and a tempered bainite phase in a total amount of 95% or more in terms of area ratio,an average grain diameter of the microstructure is 5.0 μm or less,an amount of Fe precipitated is 0.10 mass % or more, [{'br': None, '([Ti]/48+[Nb]/93 +[V]/51)×12 \u2003\u2003(2),'}, 'where, [Ti], [Nb], and [V] in equation (2) respectively denote the amounts by mass % of Ti, Nb, and V precipitated in the form of precipitates having a grain diameter of less than 20 nm, and, 'an amount of Ti, Nb, and V precipitated in a form of precipitates having a grain diameter of less than 20 nm is 0.025 mass % or more in terms of precipitate C equivalent derived using formula ...

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Номер записи: 54
21-01-2021 дата публикации

SUPPORT ARRANGEMENTS, FIRE AND OVERHEAT DETECTION SYSTEMS, AND METHODS OF MAKING SUPPORT ARRANGEMENTS FOR FIRE AND OVERHEAT DETECTION SYSTEMS

Номер: US20210017909A1
Автор: Naik Vinod Maruti, Newlin Scott Kenneth, Patil Rhushikesh
Принадлежит:

A support arrangement include a mount, a cover, and a metallic mesh body. The mount has a base portion and a mount clamping portion. The cover has a plate portion and a cover clamping portion, the cover fixed to the base portion of the mount and the cover clamping portion registered to the mount clamping portion. The metallic mesh body is arranged between the mount clamping portion and the cover clamping portion to compressively support a sensor element between the mount clamping portion and the cover clamping portion. Fire and overheat detection systems, gas turbine engines with fire and overheat detection systems, and methods of making support arrangements for fire and overheat detection systems are also described. 1. A support arrangement , comprising:a mount with a base portion and a mount clamping portion;a cover with a plate portion and a cover clamping portion, the cover fixed to the base portion of the mount and the cover clamping portion registered to the mount clamping portion; anda metallic mesh body arranged between the mount clamping portion and the cover clamping portion to compressively support a sensor element between the mount clamping portion and the cover clamping portion.2. The support arrangement as recited in claim 1 , wherein the metallic mesh body is formed from a metal material.3. The support arrangement as recited in claim 1 , wherein at least one of the mount and the cover is formed from a metal material.4. The support arrangement as recited in claim 1 , wherein the metallic mesh body is connected to the mount clamping portion of the mount.5. The support arrangement as recited in claim 1 , wherein the metallic mesh body is connected to the cover clamping portion of the mount.6. The support arrangement as recited in claim 1 , wherein brazing fixes the metallic mesh body to one of the cover clamping portion of the cover and the mount clamping portion of the mount.7. The support arrangement as recited in claim 1 , wherein a weld fixes the ...

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Номер записи: 55
28-01-2016 дата публикации

Method for Producing a Profile and a Manufacturing System for Producing a Profile

Номер: US20160024605A1
Автор: Gorschlüter Jorg, Sikora Sascha
Принадлежит:

A method for producing a profile includes method steps of: providing a workpiece; shaping the workpiece; joining the workpiece; coating the workpiece; heating the workpiece; and at least partially hardening the workpiece; wherein the coating method step is carried out temporally after the joining method step and temporally before the heating method step. 1. A method for producing a profile , comprising the following method steps:providing a workpiece,shaping the workpiece,joining the workpiece,coating the workpiece,heating the workpiece,at least partially hardening the workpiece,wherein the coating method step is carried out temporally after the joining method step and temporally before the heating method step.2. The method according to claim 1 , wherein claim 1 , in the joining method step claim 1 , the shaped workpiece is welded.3. The method according to claim 1 , wherein claim 1 , in the shaping method step claim 1 , a slit is formed in the shaped workpiece by deformation.4. The method according to claim 1 , wherein the coated workpiece is hardened in a shaping manner in a hardening tool.5. The method according to claim 1 , wherein claim 1 , in the coating method step claim 1 , the joined workpiece is coated with a hot-dip coating process.6. The method according to claim 1 , wherein claim 1 , in the coating method step claim 1 , the joined workpiece is coated with an electrolytic coating process.7. The method according to claim 1 , wherein claim 1 , in the coating method step claim 1 , the joined workpiece is coated with an anti-scale layer in a painting process.8. The method according to claim 1 , further comprising cleaning the workpiece before the coating method step.9. The method according to claim 1 , wherein claim 1 , in the heating method step claim 1 , the coated workpiece is heated to a hardening temperature.10. The method according to claim 1 , wherein claim 1 , in the hardening method step claim 1 , the coated workpiece is transferred into a hardening ...

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Номер записи: 56
25-01-2018 дата публикации

HIGH-STRENGTH GALVANIZED STEEL SHEET AND METHOD FOR MANUFACTURING THE SAME (AS AMENDED)

Номер: US20180023154A1
Автор: Funakawa Yoshimasa, HASEGAWA Hiroshi
Принадлежит: JFE STEEL CORPORATION

A high-strength galvanized steel sheet having a chemical composition containing, by mass %, C: 0.07% to 0.25%, Si: 0.01% to 3.00%, Mn: 1.5% to 4.0%, P: 0.100% or less, S: 0.02% or less, Al: 0.01% to 1.50%, N: 0.001% to 0.008%, Ti: 0.003% to 0.200%, B: 0.0003% to 0.0050%, and the balance being Fe and inevitable impurities, in which the relationship Ti>4N is satisfied, and a microstructure including, in terms of area ratio in a cross section located at ¼ of the thickness from the surface of a base steel sheet, a ferrite phase in an amount of 70% or less (including 0%), a bainite phase and a tempered bainite phase in an amount of 20% or less (including 0%) in total, a tempered martensite phase in an amount of 25% or more, and a retained austenite phase in an amount of less than 3% (including 0%), in which the average crystal grain diameter of the tempered martensite phase is 20 μm or less, in which a variation in the Vickers hardness of the tempered martensite phase is 20 or less in terms of standard deviation, and in which the number density of carbides having a minor axis length of 0.05 μm or more in the tempered martensite phase is 3×10particles/mmor less, as well as a method for manufacturing the steel sheet, is disclosed. 16.-. (canceled)8. The high-strength claim 7 , galvanized steel sheet according to claim 7 , the chemical composition further containing claim 7 , by mass % claim 7 , at least one group selected from the group consisting of Group A to C: Cr: 0.01% to 2.00%,', 'Mo: 0.01% to 2.00%,', 'V: 0.01% to 2.00%,', 'Ni: 0.01% to 2.00%, and', 'Cu: 0.01% to 2.00%, 'Group A, which contains at least one selected from 'Nb: 0.003% to 0.200%, and', 'Group B, which contains Ca: 0.001% to 0.005%, and', 'REM: 0.001% to 0.005%., 'Group C, which contains at least one selected from9. A method for manufacturing a high-strength claim 7 , galvanized steel sheet claim 7 , the method comprising performing the following processes in the following order:{'claim-ref': {'@idref': ...

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Номер записи: 57
25-01-2018 дата публикации

METHOD FOR THE PREPARATION OF A COATED METAL SHEET, COMPRISING THE APPLICATION OF AN AQUEOUS SOLUTION CONTAINING AN AMINO ACID, AND ASSOCIATED USE IN ORDER TO IMPROVE CORROSION RESISTANCE

Номер: US20180023177A1
Автор: DERULE Herve, RACHIELE Lydia, THAÏ Delphine
Принадлежит:

The invention relates to a method for preparing a metal sheet () comprising at least the steps of: 120-. (canceled)21. A method for preparing a metal sheet comprising at least the steps of:providing a steel substrate, at least one face of which is coated with a metal coating comprising at least 40% by weight of zinc,applying on the outer surface of the metal coating an aqueous solution comprising an amino acid selected from among alanine, arginine, aspartic acid, cysteine, glutamine, lysine, methionine, proline, serine, threonine, and a mixture thereof, each amino acid being in a neutral or salt form,the aqueous solution being free of any compound comprising a metal from the group IIIB or from the group IVB, andthe mass percentage as a dry extract of the amino acid in neutral or salt form or of the mixture of amino acids in the neutral or salt forms in the aqueous solution being greater than or equal to 75%.22. The method according to claim 21 , comprising a preliminary step for preparing the steel substrate claim 21 , at least one face of which is coated with a metal coating claim 21 , selected from among hot galvanization claim 21 , a sonic vapor jet deposition and an electro-zinc-plating of the steel substrate.23. The method according to claim 21 , wherein the metal coating is selected from among a zinc coating GI claim 21 , a zinc coating GA claim 21 , a zinc and aluminum alloy claim 21 , a zinc and magnesium alloy and a zinc claim 21 , magnesium and aluminum alloy.24. The method according to claim 23 , wherein the metal coating is a zinc and magnesium alloy comprising between 0.1 and 10% by weight of Mg and optionally between 0.1 and 20% by weight of Al claim 23 , the remainder of the metal coating being Zn claim 23 , inevitable impurities and optionally one or several added elements selected from among Si claim 23 , Sb claim 23 , Pb claim 23 , Ti claim 23 , Ca claim 23 , Mn claim 23 , Sn claim 23 , La claim 23 , Ce claim 23 , Cr claim 23 , Ni or Bi.25. The ...

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Номер записи: 58
24-01-2019 дата публикации

Method for Producing a Steel Product with a Zn Coating and a Tribologically Active Layer Deposited on the Coating, and a Steel Product Produced According to Said Method

Номер: US20190024240A1
Автор: Lostak Thomas, Timma Christian
Принадлежит:

A method is disclosed which allows a tribologically optimally effective coating to be produced on a steel product surface provided with a Zn-based protective coating using simple products which are nonhazardous with respect to environmental pollution. For this purpose, a correspondingly coated flat steel product is provided, and an aqueous solution consisting of an ammonium sulfate and completely desalinated water is deposited onto the protective coating of the steel product. The concentration of the ammonium sulfate in the aqueous solution is 0.01-5.7 mol/l and the pH value of the aqueous solution is 4-6 with respect to the SO ions. At same time, the reaction time near the surface between the aqueous solution and the protective coating is more than 0 seconds and maximally 5 seconds such that a tribologically active layer which consist of ammonium zinc sulfate is provided on the protective coating after a drying process which is carried out without an upstream flushing process. The invention relates to a method which allows a tribologically optimally effective coating to be produced on a steel product surface provided with a Zn-based protective coating using simple products which are nonhazardous with respect to environmental pollution. For this purpose, a correspondingly coated flat steel product is provided, and an aqueous solution consisting of an ammonium sulfate and completely desalinated water is deposited onto the protective coating of the steel product. The concentration of the ammonium sulfate in the aqueous solution is 0.01-5.7 mol/l and the pH value of the aqueous solution is 4-6 with respect to the SOions. At same time, the reaction time near the surface between the aqueous solution and the protective coating is more than 0 seconds and maximally 5 seconds such that a tribologically active layer which consist of ammonium zinc sulfate is provided on the protective coating after a drying process which is carried out without an upstream flushing process. 1. ...

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Номер записи: 59
24-04-2014 дата публикации

METHOD OF SUPPLYING Zn-Al ALLOY TO MOLTEN ZINC POT, METHOD OF ADJUSTING CONCENTRATION OF Al IN MOLTEN ZINC BATH, AND APPARATUS FOR SUPPLYING Zn-Al ALLOY TO MOLTEN ZINC POT

Номер: US20140109793A1
Автор: Hideki Nishimura, Masaaki OMODAKA, Mikio Kawamura, Yu Yamauchi
Принадлежит: Nippon Steel and Sumitomo Metal Corp

A method of supplying a Zn—Al alloy to a molten zinc pot which accommodates a molten zinc bath in a hot dip galvanizing line, includes: supplying the Zn—Al alloy from a supply portion provided at a lower portion of an insertion guide having a pipe shape, in which the supply portion is immersed between an inner wall of the molten zinc pot on a downstream side in a travelling direction of a steel sheet and a front support roll installed in the molten zinc bath at a depth within ±400 mm from a lower end of the front support roll, and an inside of the insertion guide is pressurized by inert gas to prevent the molten zinc bath from advancing to the inside of the insertion guide.

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Номер записи: 60
29-01-2015 дата публикации

STEEL SHEET FOR HOT PRESS-FORMING, METHOD FOR MANUFACTURING THE SAME, AND METHOD FOR PRODUCING HOT PRESS-FORMED PARTS USING THE SAME

Номер: US20150027596A1
Автор: ANDO Satoru, Miyoshi Tatsuya, Nakajima Seiji
Принадлежит: JEF STEEL CORPORATION

The invention provides a steel sheet for hot press-forming that can reliably give hot press-formed parts having excellent paint adhesiveness, perforation corrosion resistance and joint corrosion resistance, and also provides a method for manufacturing the steel sheet for hot press-forming, and a method for producing hot press-formed parts using the steel sheet for hot press-forming. The steel sheet for hot press-forming includes a base steel sheet and a Zn-based coating layer with a mass of coating of 10 to 90 g/mon the base steel sheet, wherein the average ferrite grain diameter in the surface microstructure of the base steel sheet is not more than 20 μm. 1. A steel sheet for hot press-forming comprising a base steel sheet and a Zn-based coating layer with a mass of coating of 10 to 90 g/mon the base steel sheet , wherein the average ferrite grain diameter in the surface microstructure of the base steel sheet is not more than 20 μm.2. The steel sheet for hot press-forming according to claim 1 , wherein the Zn-based coating layer has a chemical composition comprising 10 to 25 mass % Ni and the balance being Zn and inevitable impurities.3. The steel sheet for hot press-forming according to claim 2 , wherein the Zn-based coating layer includes an η phase in an amount of not more than 5 mass %.4. The steel sheet for hot press-forming according to claim 1 , wherein the base steel sheet under the Zn-based coating layer has a chemical composition comprising claim 1 , by mass % claim 1 , C: 0.15 to 0.5% claim 1 , Si: 0.05 to 2.0% claim 1 , Mn: 0.5 to 3% claim 1 , P: not more than 0.1% claim 1 , 5: not more than 0.05% claim 1 , Al: not more than 0.1% claim 1 , N: not more than 0.01% claim 1 , and the balance being Fe and inevitable impurities.5. The steel sheet for hot press-forming according to claim 4 , wherein the base steel sheet under the Zn-based coating layer further includes claim 4 , by mass % claim 4 , at least one selected from Cr: 0.01 to 1% claim 4 , Ti: not ...

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Номер записи: 61
23-01-2020 дата публикации

METAL COATED STEEL STRIP

Номер: US20200024717A1
Автор: Griffiths Scott Robin, Liu Qiyang, Neufeld Aaron Kiffer, Smith Ross McDowall, Williams Joe
Принадлежит:

A steel strip that has a coating of an Al—Zn—Si alloy that contains 0.3-10 wt. % Mg and 0.005-0.2 wt. % V. 1. A cold rolled steel strip that has a coating of an Al—Zn—Si—Mg alloy that contains the following ranges in % by weight of the elements Al , Zn , Si , Mg and V:Al: 45 to 60%;Zn: 35 to 60%;Si: 1.2 to 2.5%;Mg: 1.0 to 3.0%; andV: 0.03 to 0.2%,wherein the V is present in the range of 0.03 to 0.2% as a deliberate alloy addition and not as an unavoidable impurity.2. The steel strip defined in wherein the alloy coating contains less than 0.15 wt. % V.3. The steel strip defined in wherein the alloy coating contains less than 0.1 wt. % V.4. The steel strip defined in wherein the alloy coating contains other elements present as unavoidable impurities and/or as deliberate alloy additions.5. The steel strip defined in wherein the alloy coating is a single layer.6. A cold formed end-use product comprising the steel strip defined in . The present application is a continuation of U.S. patent application Ser. No. 13/520,643, filed Sep. 24, 2012, which is a 371 Application of International Application No. PCT/AU2011/000010, filed Jan. 6, 2011, which claims priority to Australian Application No. 2010900043, filed Jan. 6, 2010, the entire contents of each are incorporated by reference.The present invention relates to strip, typically steel strip, which has a corrosion-resistant metal alloy coating of an alloy that contains aluminium, zinc, and silicon and is hereinafter referred to as an “Al—Zn—Si alloy” on this basis.The present invention relates particularly but not exclusively to a corrosion-resistant metal alloy coating that contains aluminium, zinc, silicon, and magnesium as the main elements in the alloy coating and is hereinafter referred to as an “Al—Zn—Si—Mg alloy” on this basis. The alloy coating may contain other elements that are present as deliberate alloying additions or as unavoidable impurities.The present invention relates particularly but not exclusively to ...

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Номер записи: 62
02-02-2017 дата публикации

Process for Producing a ZnAlMg-Coated Metal Sheet with Optimized Wiping and Corresponding Metal Sheet

Номер: US20170029928A1
Автор: Mataigne Jean-Michel
Принадлежит:

In this method, 21. A method according to claim 1 , wherein the method includes claim 1 , prior to the coating deposition step claim 1 , a step of cold rolling of the sheet ().31. A method according to one of the preceding claims claim 1 , wherein the method includes claim 1 , after the step of coating solidification claim 1 , a step of skin-pass rolling of the sheet ().47. A method according to one of the preceding claims claim 1 , wherein the content by weight of Al in the metal coating () is comprised between 0.5% and 3.9%.57. A method according to claim 4 , wherein the content by weight of Al in the metal coating () is comprised between 1.5% and 3.9%.67. A method according to one of to claim 4 , wherein the content by weight of Al in the metal coating () is comprised between 4.4% and 5.6%.77. A method according to one of the preceding claims claim 4 , wherein the content by weight of Mg in the metal coating () is comprised between 1.0% and 3.3%.87. A method according to claim 7 , wherein the content by weight of Mg in the metal coating () is comprised between 2.5% and 3.3%.97. A method according to one of to claim 7 , wherein the content by weight of Mg in the metal coating () is comprised between 0.3% and 1.5%.1011357777. A sheet () obtainable according to the method claimed in one of preceding claims claim 7 , the sheet () comprising a substrate () made of steel whereof at least one surface () is coated with a metal coating () comprising of Al and Mg claim 7 , with the remainder of the metal coating () consisting of Zn claim 7 , inevitable impurities and possibly one or more additional elements selected from among Si claim 7 , Sb claim 7 , Pb claim 7 , Ti claim 7 , Ca claim 7 , Mn claim 7 , Sn claim 7 , La claim 7 , Ce claim 7 , Cr claim 7 , Zr or Bi claim 7 , the content by weight of each additional element in the metal coating () being less than 0.3% claim 7 , the metal coating () having a content by weight of Al comprised between 0.5% and 8% and a content ...

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Номер записи: 63
04-02-2016 дата публикации

METHOD FOR MANUFACTURING GALVANIZED STEEL SHEET FOR HOT STAMPING, HOT-DIP GALVANNEALED STEEL SHEET FOR HOT STAMPING AND METHOD FOR MANUFACTURING SAME, AND HOT STAMPED COMPONENT

Номер: US20160032439A1
Автор: Irie Hiroshi, Kojima Takeshi, Minowa Takeshi
Принадлежит: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)

Provided is a method for producing a plated steel sheet with high Si content for hot stamping, which is capable of suppressing the generation of unplated portions, while maintaining high bonding strength in a welded part in cases where a galvanized steel sheet containing a large amount of Si, namely, 0.7% or more of Si is used for hot stamping applications. In this production method, a hot-rolled pickled steel sheet or cold-rolled steel sheet containing 0.10-0.5% by mass of C, 0.7-2.5% by mass of Si, 1.0-3% by mass of Mn, and 0.01-0.5% by mass of Al is annealed in a reducing atmosphere and then plated, thereby producing a galvanized steel sheet for hot stamping. This method for producing a galvanized steel sheet for hot stamping is characterized in that the annealing is carried out within the range of 500 to 700° C. for 30 to 270 seconds. 1. A method for manufacturing a galvanized steel sheet , the method comprising:annealing a hot-rolled pickled steel sheet or a cold-rolled steel sheet under a reducing atmosphere, thereby forming an annealed steel sheet; andgalvanizing the annealed steel sheet, thereby forming a galvanized steel sheet,wherein the hot-rolled pickled steel sheet or the cold-rolled steel sheet comprises: C in a content of 0.10% to 0.5%; Si in a content of 0.7% to 2.5%; Mn in a content of 1.0% to 3%; and Al in a content of 0.01% to 0.5%, in percent by mass, andwherein the annealing is performed at a temperature of 500° C. to 700° C. for 30 to 270 seconds.2. The method according to claim 1 ,wherein the hot-rolled pickled steel sheet or the cold-rolled steel sheet further comprises B in a content of 0.005% or less (excluding 0%).3. The method according to claim 1 ,wherein the hot-rolled pickled steel sheet or the cold-rolled steel sheet further comprises Ti in a content of 0.10% or less (excluding 0%).4. The method according to claim 1 ,wherein the hot-rolled pickled steel sheet or the cold-rolled steel sheet further comprises Cr and Mo in a content of 1 ...

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Номер записи: 64
05-02-2015 дата публикации

Double Beam for Sink Roll

Номер: US20150034004A1
Автор: Dubois Michel, Van Houtte Brice
Принадлежит:

The present invention relates to an installation for the hot-dip coating of a metal strip () with a liquid metal, comprising a pot () containing a bath of liquid metal, an immersed sink roll () for deflecting the strip entering the bath to a vertical exit path and at least one additional roll ( ) for controlling the strip flatness, the axes of said sink and additional rolls () being supported by arms () connected to a main metal frame (A) itself connected to a base on each side of the pot by means of supports (), characterised in that the metal frame is a double beam made of a removable beam (A) connected to an intermediate beam () itself anchored to the base by the supports (). 110-. (canceled)111141231231688910812313910813. An installation for the hot-dip coating of a metal strip () with a liquid metal , comprising a pot () containing a bath of liquid metal , an immersed sink roll () for deflecting the strip entering the bath to a vertical exit path and at least one additional roll ( , ) for controlling the strip flatness , the axes of said sink and additional rolls ( , , ) being supported by arms () connected to a main metal frame ( , A) itself connected to a base on each side of the pot by means of supports ( , ) , characterised in that the metal frame is a double beam made of a removable beam (A) supporting the rolls ( , , ) connected to an intermediate beam () itself anchored to the base by the supports ( , ) and in that the removable beam (A) is smaller than the intermediate beam ().1213. The installation according to claim 11 , characterised in that the intermediate beam () is permanent.1313. The installation according to claim 11 , characterised in that the intermediate beam () is removable for special maintenance purposes.1413. The installation according to claim 11 , characterised in that the intermediate beam () is non-removable and tiltable claim 11 , rotary or translatable.15816123. The installation according to claim 11 , characterised in that the ...

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Номер записи: 65
31-01-2019 дата публикации

HIGH-YIELD-RATIO HIGH-STRENGTH GALVANIZED STEEL SHEET AND METHOD FOR MANUFACTURING THE SAME

Номер: US20190032187A1
Автор: Koba Masaki, MASUOKA Hiroyuki, NISHIMURA Yasuhiro, Tsuda Seisuke, YOSHITOMI HIROMI
Принадлежит: JFE STEEL CORPORATION

Provided are a high-yield-ratio high-strength galvanized steel sheet and a method for manufacturing thereof. The high-yield-ratio high-strength galvanized steel sheet has a steel sheet having a specified chemical composition and a metallographic structure including, in terms of area ratio, in terms of area ratio, 15% or less of ferrite, 20% or more and 50% or less of martensite, and bainite and tempered martensite in a total amount of 30% or more, and a galvanized layer formed on the steel sheet having a coating weight of 20 g/mto 120 g/mper side, in which a yield strength ratio is 65% or more, a tensile strength is 950 MPa or more, and Mn oxides are contained in the galvanized layer in an amount of 0.015 g/mto 0.050 g/m. 1. A high-yield-ratio high-strength galvanized steel sheet comprising a steel sheet having a composition containing , by mass % ,C: 0.12% or more and 0.25% or less,Si: less than 1%,Mn: 2.0% or more and 3% or less,P: 0.05% or less,S: 0.005% or less,Al: 0.1% or less,N: 0.008% or less,Ca: 0.0003% or less,one or more of Ti, Nb, V, and Zr in a total amount of 0.01% to 0.1%, and the balance being Fe and inevitable impurities, anda metallographic structure including, in terms of area ratio, 15% or less of ferrite, 20% or more and 50% or less of martensite, and bainite and tempered martensite in a total amount of 30% or more, and{'sup': 2', '2, 'a galvanized layer formed on the steel sheet having a coating weight of 20 g/mto 120 g/mper side; and'}a yield strength ratio is 65% or more,a tensile strength is 950 MPa or more, and{'sup': 2', '2, 'Mn oxides are contained in the galvanized layer in an amount of 0.015 g/mto 0.050 g/m.'}2. The high-yield-ratio high-strength galvanized steel sheet according to claim 1 , wherein the composition further contains claim 1 , by mass % claim 1 ,one or more of Mo, Cr, Cu, and Ni in a total amount of 0.1% to 0.5% and/or B: 0.0003% to 0.005%.3. The high-yield-ratio high-strength galvanized steel sheet according to claim 1 , ...

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Номер записи: 66
04-02-2021 дата публикации

METHOD OF CHEMICAL DEPOSITION OF IRIDIUM OXIDE FILM ON RIGID SUBSTRATE

Номер: US20210032736A1
Автор: HSIEH YI-CHIEH, TSO KUANG-CHIH, WANG HAN-YI, Wu Chung-Yu, WU PU-WEI
Принадлежит:

A method of chemical deposition of Iridium oxide film on rigid substrate is provided. The method comprises providing a rigid substrate in a container, adding an iridium precursor and mixing the iridium precursor with water to form an iridium precursor liquid in the container, adding and mixing an oxidant with the iridium precursor liquid in the container; and depositing an iridium oxide film on the rigid substrate in the container. A chelating agent and pH adjustor can be either selectively used for stabilizing the chemical bath deposition and for adjusting pH value of the liquid. For a variety of rigid substrates to be applied, the pH adjustor can adjust the pH value within a range of 4˜13. By employing the proposed fabrication method, it is extraordinarily advantageous of chemical alkaline as well as chemical acid deposition formula with configuration of depositing sodium-doped IrOiridium oxide film. 1. A method of chemical deposition of iridium oxide film on rigid substrate , comprising:providing a rigid substrate in a container;adding an iridium precursor and mixing said iridium precursor with water to form an iridium precursor liquid in said container;adding and mixing an oxidant with said iridium precursor liquid in said container; anddepositing an iridium oxide film on said rigid substrate in said container.2. The method of chemical deposition of iridium oxide film on rigid substrate according to claim 1 , wherein said iridium precursor is selected from a group consisting of NaIrCl claim 1 , KIrCl claim 1 , IrCl claim 1 , IrBr claim 1 , NaIrCl claim 1 , KIrCl claim 1 , and (NH)IrCl.3. The method of chemical deposition of iridium oxide film on rigid substrate according to claim 1 , wherein said oxidant is selected from a group consisting of NaClO claim 1 , NaClO claim 1 , KClO claim 1 , NaBrO claim 1 , Ca(ClO) claim 1 , and a mixture of NaClO claim 1 , NaClO claim 1 , KClO claim 1 , NaBrO claim 1 , Ca(ClO)and HO.4. The method of chemical deposition of iridium ...

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Номер записи: 67
01-05-2014 дата публикации

FLUX COMPOSITIONS FOR STEEL GALVANIZATION

Номер: US20140120367A1
Автор: BALDUYCK JULIEN, MASQUELIER CAROLINE, WARICHET DAVID
Принадлежит: FONTAINE HOLDINGS NV

This invention relates to a flux composition for treating a metal surface prior to batch hot galvanizing in molten zinc-based alloys. The composition comprises (a) more than 40 and less than 70 wt. % zinc chloride, (b) 10 to 30 wt. % ammonium chloride, (c) more than 6 and less than 30 wt. % of a set of at least two alkali or alkaline earth metal halides, (d) from 0.1 to 2 wt. % lead chloride, and (e) from 2 to 15 wt. % tin chloride, provided that the combined amounts of lead chloride and tin chloride represent at least 2.5 wt. % of said composition. 1. A flux composition for treating a metal surface , comprising (a) more than 40 and less than 70 wt. % zinc chloride , (b) from 10 to 30 wt. % ammonium chloride , (c) more than 6 and less than 30 wt. % of a set of at least two alkali or alkaline earth metal halides , (d) from 0.1 to 2 wt. % lead chloride , and (e) from 2 to 15 wt. % tin chloride , provided that the combined amounts of lead chloride and tin chloride represent at least 2.5 wt. % of said composition.2. A flux composition according to claim 1 , wherein the set of at least two alkali or alkaline earth metal halides is a set of at least two alkali metal chlorides and represents from 10 to 30 wt. % of the flux composition.3. A flux composition according to claim 1 , wherein said set of at least two alkali metal chlorides includes sodium chloride and potassium chloride in a KCl/NaCl weight ratio from 0.2 to 2.0.4. A flux composition according to claim 1 , wherein said set of at least two alkali metal chlorides includes sodium chloride and potassium chloride in a KCl/NaCl weight ratio from 2.0 to 8.0.5. A flux composition according to claim 1 , further comprising at least one metal chloride selected from the group consisting of nickel chloride claim 1 , cobalt chloride claim 1 , manganese chloride claim 1 , cerium chloride and lanthanum chloride.6. A flux composition according to claim 1 , further comprising up to 1.5 wt. % nickel chloride.7. A flux composition ...

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Номер записи: 68
01-05-2014 дата публикации

FLUX COMPOSITIONS FOR STEEL GALVANIZATION

Номер: US20140120368A1
Автор: BALDUYCK JULIEN, MASQUELIER CAROLINE, WARICHET DAVID
Принадлежит: FONTAINE HOLDINGS NV

This invention relates to a flux composition for treating a metal surface, comprising (a) more than 40 and less than 70 wt. % zinc chloride, (b) 10 to 30 wt. % ammonium chloride, (c) more than 6 and less than 30 wt. % of a set of at least two alkali metal chlorides including sodium chloride and potassium chloride, (d) from 0 to 2 wt. % lead chloride, and (e) from 0 to 15 wt. % tin chloride, provided that the KCl/NaCl weight ratio of said set of at least two alkali metal chlorides ranges from 2.0 to 8.0. 1. A flux composition for treating a metal surface , comprising (a) more than 40 and less than 70 wt. % zinc chloride , (b) 10 to 30 wt. % ammonium chloride , (c) more than 6 and less than 30 wt. % of a set of at least two alkali metal chlorides including sodium chloride and potassium chloride , (d) from 0 to 2 wt. % lead chloride , and (e) from 0 to 15 wt. % tin chloride , provided that the KCl/NaCl weight ratio of said set of at least two alkali metal chlorides ranges from 2.0 to 8.02. A flux composition according to claim 1 , wherein said the combined amounts of lead chloride and tin chloride represent at least 2.5 wt. % of said composition.3. A flux composition according to claim 1 , further comprising at least one metal chloride selected from the group consisting of nickel chloride claim 1 , cobalt chloride claim 1 , manganese chloride claim 1 , cerium chloride claim 1 , antimony chloride and lanthanum chloride.4. A flux composition according to claim 1 , further comprising up to 1.5 wt. % nickel chloride.5. A flux composition according to claim 1 , further comprising at least one nonionic surfactant.6. A flux composition according to claim 1 , further comprising at least one corrosion inhibitor.7. A flux composition according to claim 1 , being fluoride salts-free.8. A flux composition according to claim 1 , being free from volatile organics.9. A fluxing bath for hot dip galvanization comprising a flux composition according to dissolved in water.10. A fluxing ...

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Номер записи: 69
01-05-2014 дата публикации

COLD-ROLLED STEEL PLATE COATED WITH ZINC OR A ZINC ALLOY, METHOD FOR MANUFACTURING SAME, AND USE OF SUCH A STEEL PLATE

Номер: US20140120371A1
Автор: Mbacke Papa Amadou Mactar, MOULIN Antoine
Принадлежит: ARCELORMITTAL INVESTIGACIÓN Y DESARROLLO SL

The present invention provides a “TRIP effect” cold-rolled and annealed steel sheet which has improved formability and weldability, strength between 780 and 900 MPa and elongation at fracture greater than 19%, the composition of which includes the following elements in percentages expressed by weight: 0.17%≦C≦0.25%, 1.5%≦Mn≦2%, 0.50%≦Si≦1%, 0.50%≦Al≦1.2%, whereby Si+Al≧1.30%, the remainder of the composition including iron and the inevitable impurities resulting from processing. The microstructure of the sheet includes 65 to 85% ferrite and 15 to 35% islands of martensite and residual austenite. The average size of these islands of martensite and residual austenite is less than 1.3 micrometers and their shape factor is less than 3. 117-. (canceled)18. A cold-rolled steel sheet coated with zinc or zinc alloy , the composition of which includes the following , expressed by weight:{'br': None, '0.17%≦C≦0.25%'}{'br': None, '1.5%≦Mn≦2.0%'}{'br': None, '0.50%≦Si≦1%'}{'br': None, '0.50%≦Al≦1.2%'}{'br': None, 'B≦0.001%'}{'br': None, 'P≦0.030%'}{'br': None, 'S≦0.01%'}{'br': None, 'Nb≦0.030%'}{'br': None, 'Ti≦0.020%'}{'br': None, 'V≦0.015%'}{'br': None, 'Cu≦0.1%'}{'br': None, 'Cr≦0.150%'}{'br': None, 'Ni≦0.1%'}{'br': None, '0%≦Mo≦0.150%'}{'br': None, 'whereby Si+Al≧1.30%,'}the remainder of the composition consists of iron and the inevitable impurities resulting from processing, of 65 to 85% ferrite, and', 'of 15 to 35% islands of martensite and residual austenite, the ferrite containing less than 5% non-recrystallized ferrite, a total content of residual austenite being between 10 and 25% and a total martensite content being less than or equal to 10%, an average size of the martensite and residual austenite islands being less than 1.3 micrometers, and an average shape factor of the islands being less than 3,, 'a microstructure of the composition includes, with the contents expressed in area percentagea mechanical strength Rm of the sheet being between 780 and 900 MPa, and an ...

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Номер записи: 70
09-02-2017 дата публикации

SUBSTRATE LIQUID PROCESSING APPARATUS, SUBSTRATE LIQUID PROCESSING METHOD, AND STORAGE MEDIUM

Номер: US20170037499A1
Автор: Hyakutake Hironobu, Kanzaki Koichiro, Tsuchiya Takafumi
Принадлежит:

Disclosed is a substrate liquid processing apparatus including: a processing bath in which a mixture of sulfuric acid and hydrogen peroxide is stored, and a substrate is immersed in the stored mixture such that a processing is performed on the substrate; an outer bath configured to receive the mixture flowing out from the processing bath; a circulation line configured to return the mixture in the outer bath to the processing bath; a sulfuric acid supply unit configured to supply sulfuric acid to the mixture; a first hydrogen peroxide supply unit configured to supply hydrogen peroxide to the mixture in the outer bath; and a second hydrogen peroxide supply unit configured to supply hydrogen peroxide to the mixture flowing through a downstream portion of the circulation line. 1. A substrate liquid processing apparatus comprising:a processing bath in which a mixture of sulfuric acid and hydrogen peroxide is stored, and a substrate is immersed in the stored mixture such that a processing is performed on the substrate;an outer bath configured to receive the mixture flowing out from the processing bath;a circulation line configured to return the mixture in the outer bath to the processing bath;a sulfuric acid supply unit configured to supply sulfuric acid to the mixture;a first hydrogen peroxide supply unit configured to supply hydrogen peroxide to the mixture in the outer bath; anda second hydrogen peroxide supply unit configured to supply hydrogen peroxide to the mixture flowing through a downstream portion of the circulation line.2. The substrate liquid processing apparatus of claim 1 , further comprising:a controller configured to control operations of the first hydrogen peroxide supply unit and the second hydrogen peroxide supply unit,wherein the controller sets a supply amount of the hydrogen peroxide supplied from one of the first hydrogen peroxide supply unit and the second hydrogen peroxide supply unit to be greater than a supply amount of the hydrogen peroxide ...

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Номер записи: 71
09-02-2017 дата публикации

METHOD AND FORMULATIONS FOR REMOVING RUST AND SCALE FROM STEEL AND FOR REGENERATING PICKLING LIQUOR IN HOT-DIP GALVANIZATION PROCESS

Номер: US20170037520A1
Автор: BOIKO Vladimir, SCHAPIRO Reuben, SHAPIRO Lev
Принадлежит: GREEN FUTURE LTD.

This invention provides a cost-effective hot-dip galvanization process for ferrous metals, which is regardful to the environment and to the health of the personnel. 1. A hot-dip galvanization process for stabilizing the surface of ferrous metals comprising steps ofi) removing metal oxide scales and rust from said surface, comprising contacting said surface with a liquid composition comprising phosphoric acid, a hydrophilic polymer, a non-ionic surfactant, and an anti-smut agent (said liquid composition being denoted GF2), wherein said GF2 solubilizes iron oxides forming said scales and rust without solubilizing non-oxidized metal in said surface, thereby preparing said surface for zinc-coating; andii) binding the solubilized iron from said GF2 in an insoluble iron oxalate complex by contacting said GF2 with a solid composition comprising oxalic acid, a nucleation crystallization agent, and an anionic surfactant (said solid composition being denoted GF1), and removing said insoluble iron oxalate complex from said liquid composition, thereby releasing phosphoric acid in GF2 for further use;wherein the use of GF2 in said step i) enables to avoid the formation of dangerous gaseous side products during said surface stabilizing, and to make a uniform and thin zinc coating during said zinc-coating, and wherein the use of GF1 in said step ii) enables to recover and recycle phosphoric acid;wherein the combination of steps i) and ii) results in an environmentally safe and cost-effective hot-dip galvanization process.2. The process of claim 1 , wherein said GF2 comprises 7-40 wt % phosphoric acid claim 1 , 0.5-3 wt % hydrophilic polymer claim 1 , 0.1-1 wt % non-ionic surfactant claim 1 , and 0.05-0.5 wt % anti-smut agent.3. The process of claim 1 , wherein said GF1 comprises 96.5-99 wt % oxalic acid dihydrate claim 1 , 1-3 wt % of iron oxide as the nucleation agent claim 1 , and 0.05-0.5 wt % of the anionic surfactant.4. The process of claim 1 , wherein said hydrophilic ...

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Номер записи: 72
24-02-2022 дата публикации

METHOD FOR MANUFACTURING MOLTEN GALVANIZED STEEL SHEET

Номер: US20220056570A1
Автор: KIM Sang-Ho
Принадлежит:

The present invention relates to a molten metal plated steel sheet manufacturing method for cooling a molten galvanized layer with high efficiency when manufacturing a molten galvanized steel sheet, and the purpose of the present invention is to provide a method for manufacturing a molten galvanized plating, wherein a molten galvanized steel sheet having an aesthetically pleasing surface without fitting defects, drop mark defects, and linear comb-pattern defects can be stably obtained by cooling a galvanized layer with high efficiency during a molten metal plated steel sheet manufacturing process. This method for manufacturing a molten galvanized steel sheet having excellent surface properties is characterized by comprising the steps in which a molten galvanized layer is formed on the surface of a steel sheet while the steel sheet passes through a galvanizing pot, the thickness of the galvanized layer formed on the surface of the steel sheet is adjusted while the steel sheet passes through a gas wiping device, the steel sheet that has had the thickness of the galvanized layer adjusted undergoes a primary cooling while passing through a bottom cooler, and the galvanized steel sheet that has undergone the primary cooling undergoes a secondary cooling while passing through a cooling chamber, wherein: the primary cooling is performed with cooling air blown from the bottom cooler until right before a galvanizing solution of the galvanized layer attached to the surface of the steel sheet becomes solidified, the amount of air blown being adjusted according to the temperature of the galvanized layer attached to the surface of the steel sheet; and the secondary cooling is performed with ionic air generated from an ionic air generator provided in the cooling chamber and a spray solution sprayed from a solution atomization part, the secondary cooling being performed from the start of the solidification of the galvanizing solution until the end of the solidification, and the ...

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Номер записи: 73
07-02-2019 дата публикации

Resin composition, black resin coated steel sheet using same, and method of preparing same

Номер: US20190040277A1
Автор: Choon Ho KANG, Kee Cheol Park, Moon Jae Kwon
Принадлежит: Posco Co Ltd

The present invention relates to a resin composition comprising 40% to 50% by weight of a polyester resin on the basis of a total of 100% by weight of the composition, the polyester resin comprising a main resin and an auxiliary resin, wherein the main resin has a higher molecular weight than the auxiliary resin, and the difference of a glass transition temperature between the main resin and the auxiliary resin is 25° C. or less.

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Номер записи: 74
07-02-2019 дата публикации

EQUIPMENT FOR COATING A METAL STRIP

Номер: US20190040515A1
Автор: Deweer Benoit, Monnoyer Maxime, Schmitz Bruno, Silberberg Eric, Vanhee Luc
Принадлежит:

Equipment for manufacturing a metal strip coated by a process that includes vacuum-depositing a layer of an oxidizable metal or an oxidizable metal alloy on a metal strip precoated with zinc or with a zinc alloy, then coiling the coated metal strip, then oxidizing a surface of the metal strip coated with the oxidizable metal or oxidizable metal alloy and treating the oxidized wound coil with a static diffusion treatment to obtain a strip having a coating that includes, in an upper portion, a layer of an alloy formed by diffusion of the oxidizable metal or the oxidizable metal alloy in all or part of the zinc or zinc alloy layer. The equipment includes a device for galvanizing the metal strip, a vacuum deposition coating device, and a static heat treatment device operating in a controlled atmosphere. 1. Equipment for manufacturing a metal strip coated by a process for coating a metal strip , the process comprising the steps of:vacuum-depositing a layer of an oxidizable metal or an oxidizable metal alloy on a metal strip precoated with zinc or with a zinc alloy;coiling the coated metal strip; thenoxidizing a surface of the metal strip coated with the oxidizable metal or oxidizable metal alloy; andtreating the oxidized wound coil with a static diffusion treatment so as to obtain a strip having a coating that comprises, in an upper portion, a layer of an alloy formed by diffusion of the oxidizable metal or the oxidizable metal alloy in all or part of the zinc or zinc alloy layer,the equipment comprising:a device for galvanizing the metal strip;a vacuum deposition coating device; anda static heat treatment device operating in a controlled atmosphere.2. The equipment as recited in claim 1 , wherein the galvanizing device is a hot-dip galvanizing device.3. The equipment as recited in claim 1 , wherein the galvanizing device is an electrogalvanizing device.4. The equipment as recited in claim 1 , wherein the galvanizing device is a vacuum deposition galvanizing device.5. ...

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Номер записи: 75
06-02-2020 дата публикации

A method for manufacturing a thermally treated steel sheet

Номер: US20200040426A1
Автор: Frederic Bonnet
Принадлежит: ArcelorMittal SA

A method for manufacturing a thermally treated steel sheet is described. The method includes: A. a preparation step including: 1) a selection substep, wherein the chemical composition and m target are compared to a list of predefined products, which microstructure includes predefined phases and predefined proportion of phases, and selecting a product having a microstructure m standard closest to m target and a predefined thermal path TP standard to obtain m standard , 2) a calculation substep, wherein at least two thermal path TP x , each TP x corresponding to a microstructure mx obtained at the end of TP x , are calculated based on the selected product of step A.1) and TP standard and the initial microstructure mi of the steel sheet to reach m target , 3) an selection substep, wherein one thermal path TP target to reach m target is selected, TP target chosen from TP x and selected such that m x is the closest to m target , B. a thermal treatment step, wherein TP target is performed on the steel sheet.

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Номер записи: 76
06-02-2020 дата публикации

Coated Metal Sheet Having an Amino Acid to Improve Corrosion Resistance

Номер: US20200040438A1
Автор: DERULE Herve, RACHIELE Lydia, THAÏ Delphine
Принадлежит:

A coated metal sheet is provided. The coated metal sheet includes a steel substrate, a metal coating on at least one face of the steel substrate, the metal coating comprising at least 40% by weight of zinc; and a layer coating an outer surface of the metal coating, the layer including an amino acid in a neutral or salt form, the amino acid being selected from among alanine, arginine, aspartic acid, cysteine, glutamine, lysine, methionine, proline, serine, threonine, or of a mixture thereof, the amount of said amino acid or of said mixture being from 0.1 to 200 mg/m, and optionally a base or a mixture of bases, or an acid or a mixture of acids. 1. A coated metal sheet comprising:a steel substrate;a metal coating on at least one face of the steel substrate, the metal coating comprising at least 40% by weight of zinc; and [{'sup': '2', 'an amino acid in a neutral or salt form, the amino acid being selected from among alanine, arginine, aspartic acid, cysteine, glutamine, lysine, methionine, proline, serine, threonine, or of a mixture thereof, the amount of said amino acid or of said mixture being from 0.1 to 200 mg/m, and'}, 'optionally a base or a mixture of bases, or an acid or a mixture of acids., 'a layer coating an outer surface of the metal coating, the layer consisting of2. The coated metal sheet according to claim 1 , wherein the amino acid is proline in the neutral or salt form claim 1 , threonine in the neutral or salt form claim 1 , or a mixture of proline and of threonine claim 1 , the proline and the threonine being in the neutral or salt form.3. The coated metal sheet according to claim 1 , wherein the amount of said amino acid or of said mixture is from 25 to 1500 mg/m.4. The coated metal sheet according to claim 3 , wherein the amount of said amino acid or of said mixture being from 50 to 100 mg/m.5. The coated metal sheet according to claim 1 , wherein a mass percentage of dry extract of the amino acid in a neutral or salt form or of the mixture of ...

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Номер записи: 77
18-02-2016 дата публикации

Pre-Cooling System having Controlled Internal Adjustment

Номер: US20160047027A1
Автор: Dubois Michel, LANGEVIN Stephane
Принадлежит:

The invention relates to equipment for cooling a metal strip () having a liquid coating to be solidified, wherein said strip is continuously moving. Said equipment is characterized in that each half-cooler () is divided, over the length thereof, into at least two sections, a first section () and a second section (), in the direction of the movement of the strip (). The first section () is separated from the second section () in each half-cooler () by a respective internal adjustment device (), making it possible to change the gas flow/pressure parameter so that the value of said gas flow/pressure parameter is different in the first section () from the value of said parameter in the second section (). 1211112215111213142131411127878. Equipment for cooling a metal strip () having a liquid coating to be solidified , said metal strip being continuously moving , said equipment including a cooling box () provided with two gas half-coolers ( , ) , preferably using air , each designed to cool one face of the strip () and having each , on its inner face across from the respective face of the strip , a plurality of nozzles or slots () for injecting the gas at a certain flow rate , each half-cooler ( , ) being divided over its length into at least two sections , a first section () and a second section () , successively arranged in the direction of the movement of the strip () , the first section () being separated from the second section () in each half-cooler ( , ) , transversally relative to the movement of the strip , by an internal regulating device ( , ) able to modify the flow rate/pressure parameter in the first and second respective segments , the equipment being characterized in that the internal regulating devices ( , ):either are diffusers comprising two superimposed plates each having a plurality of holes or slots and whereof the movement of one relative to the other results in modifying the opening section of the diffusers;or comprise a single rotary flap or a ...

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Номер записи: 78
19-02-2015 дата публикации

METHOD FOR PRODUCING A COMPONENT FROM STEEL BY HOT FORMING

Номер: US20150047753A1
Автор: Braun Michael, Evertz Thomas, Luther Friedrich, Muetze Stefan
Принадлежит:

The invention relates to a method for producing a component from transformable steel by hot forming, in which a plate first is cut out of a strip or sheet as the pre-material, and is then heated to forming temperature and pre-formed, having an at least partially martensitic transformation structure after forming. Instead of a press mould hardening, the at least partially martensitic transformation structure is created in the pre-material, or in the plate to be formed, by austenitisation and quenching already before forming, and then the thus-conditioned plate is reheated after forming, while maintaining the at least partially martensitic transformation structure, to a temperature below the Ac1 transformation temperature, and formed at this temperature. 117-. (canceled)18. A method for the production of a component from malleable steel , comprising:cutting to size a blank as source material from a strip or metal sheet;austenitizing and quenching the blank to produce an at least partly martensitic transformation microstructure;{'sub': '1', 'heating the blank to a forming temperature below the Actransformation temperature, while maintaining the at least partly martensitic transformation microstructure; and'}{'sub': '1', 'forming the blank at the forming temperature below the Actransformation temperature.'}19. The method of claim 18 , further comprising coating the blank with a metallic coating.20. The method of claim 18 , wherein austenitizing and quenching includes heating the blank to an austenitizing temperature within a continuous or discontinuous annealing process claim 18 , and subsequently quenching the blank.21. The method of claim 20 , wherein the continuous annealing process is a run-through annealing process.22. The method of claim 21 , further comprising applying a coating on the blank by a hot dip process after the run-through annealing process.23. The method of claim 18 , further comprising tempering the blank after undergoing quenching.24. The method of ...

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Номер записи: 79
16-02-2017 дата публикации

METHOD FOR MAKING CERAMIC MATRIX COMPOSITE ARTICLES

Номер: US20170044069A1
Автор: Harris Stephen Isaiah
Принадлежит:

A method of forming a composite article may include impregnating an inorganic fiber porous preform with a first slurry composition. The slurry composition includes particles, a solvent, and a pre-gellant material. Gelling of the pre-gellant material in the slurry composition is initiated to substantially immobilize the particles and yield a gelled article. The method also includes impregnating the gelled article with a second solution that includes a high char-yielding component, and pyrolyzing the high char-yielding component to yield carbon and form a green composite article. The green composite article is then infiltrated with a molten metal or alloy infiltrant to form the composite article. The molten infiltrant reacts with carbon, and the final composite article may include less residual metal or alloy than a composite article formed without using the second solution. 1. A method comprising:impregnating an inorganic fiber porous preform with a first slurry composition, wherein the first slurry composition comprises ceramic particles, a solvent, and a pre-gellant material;initiating gelation of the pre-gellant material in the first slurry composition to substantially immobilize the particles and yield a gelled article;impregnating the gelled article with a second solution, wherein the second solution comprises a high char-yielding component;pyrolyzing the high char-yielding component to yield carbon and form a green composite article; andinfiltrating the green composite article with a molten metal alloy to form a final composite article, wherein at least some of the molten metal or alloy reacts with the carbon to form a metal carbide.2. The method of claim 1 , wherein the high char-yielding component comprises at least one of furfuryl alcohol or a phenolic material.3. The method of claim 1 , wherein the second solution further comprises at least one of a solvent claim 1 , a polymer interrupter claim 1 , an acid catalyst claim 1 , and a secondary polymer.4. The ...

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Номер записи: 80
15-02-2018 дата публикации

ZINC-BASED PLATED STEEL SHEET

Номер: US20180044809A1
Автор: AKIOKA Koji, KAWAMURA Yasuaki, SENGOKU Akihiro
Принадлежит: NIPPON STEEL & SUMITOMO METAL CORPORATION

[Object] To provide a zinc-based plated steel sheet excellent in coating film adhesiveness after hot pressing more conveniently. 1. A zinc-based plated steel sheet comprising:a zinc-based plated steel sheet that is a base metal; anda surface treatment layer formed on at least one surface of the zinc-based plated steel sheet, wherein{'sup': 2', '2, 'the surface treatment layer contains one or more oxides selected from titanium oxide, nickel oxide, and tin(IV) oxide each having a particle size of more than or equal to 2 nm and less than or equal to 100 nm, in a range of more than or equal to 0.2 g/mand less than or equal to 2 g/mper one surface.'}2. The zinc-based plated steel sheet according to claim 1 , whereinthe surface treatment layer further contains one or more phosphorus-containing compounds, one or more vanadium-containing compounds, one or more copper-containing compounds, one or more aluminum-containing compounds, one or more silicon-containing compounds, and/or one or more chromium-containing compounds in the following range as a content per one surface,{'sup': 2', '2, 'the one or more phosphorus-containing compounds: more than or equal to 0.0 g/mand less than or equal to 0.01 g/mon a P basis,'}{'sup': 2', '2, 'the one or more vanadium-containing compounds: more than or equal to 0.0 g/mand less than or equal to 0.01 g/mon a V basis,'}{'sup': 2', '2, 'the one or more copper-containing compounds: more than or equal to 0.0 g/mand less than or equal to 0.02 g/mon a Cu basis,'}{'sup': 2', '2, 'the one or more aluminum-containing compounds: more than or equal to 0.0 g/mand less than or equal to 0.005 g/mon an Al basis,'}{'sup': 2', '2, 'the one or more silicon-containing compounds: more than or equal to 0.0 g/mand less than or equal to 0.005 g/mon a Si basis, and'}{'sup': 2', '2, 'the one or more chromium-containing compounds: more than or equal to 0.0 g/mand less than or equal to 0.01 g/mon a Cr basis.'}3. The zinc-based plated steel sheet according to claim 1 ...

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Номер записи: 81
08-05-2014 дата публикации

MIXTURES FOR COATING METALLIC SURFACES

Номер: US20140127520A1
Автор: Schade Christian, Urban Tobias
Принадлежит: BASF SE

A method for coating a metallic surface by contacting it with an aqueous copolymer dispersion, wherein the aqueous copolymer dispersion comprises an effective amount of magnesium ions and phosphate or phosphonate ions, the copolymers present in the dispersion being constructed from the following components: (A) from 20 to 95 weight % of monoethylenically unsaturated hydrocarbons and/or hydrocarbons having two conjugated double bonds, (B) from 5 to 80 weight % of monoethylenically unsaturated monomers which contain acid groups, and/or anhydrides or salts thereof. Further provided are metallic surfaces coated with such copolymers, and the use of such aqueous copolymer dispersions to coat metallic surfaces. 1. A method for coating a metallic surface , the method comprising:bringing the metallic surface into contact with an aqueous copolymer dispersion, wherein the aqueous copolymer dispersion comprises an aqueous copolymer, a magnesium ion and a phosphate or phosphonate ion,wherein the aqueous copolymer comprises:(A) from 20 to 95 weight % of a monoethylenically unsaturated hydrocarbon and/or a hydrocarbon having two conjugated double bonds,(B) from 5 to 80 weight % of a monoethylenically unsaturated monomer comprising an acid group, and/or an anhydride or a salt thereof.2. The method according to claim 1 , wherein the aqueous copolymer further comprises:(C) from 0 to 30 weight % of an ethylenically unsaturated monomer different from components (A) and (B).3. The method according to claim 1 , wherein a total amount of the magnesium ion claim 1 , a phosphate ion claim 1 , and a phosphonate ion is from 0.1 to 5 weight % claim 1 , based on an amount of the aqueous copolymer.4. The method according to claim 1 , wherein component (A) is at least one alkene selected from the group consisting of ethene claim 1 , propene claim 1 , 1-butene claim 1 , 2-butene claim 1 , 1-pentene claim 1 , 1-hexene claim 1 , 1-heptene claim 1 , and 1-octene.5. The method according to claim 1 , ...

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Номер записи: 82
08-05-2014 дата публикации

HIGH-CORROSION-RESISTANCE HOT-DIP GALVANIZED STEEL SHEET HAVING EXCELLENT APPEARANCE UNIFORMITY AND MANUFACTURING METHOD THEREOF

Номер: US20140127531A1
Автор: Kamazu Nayuta, Oohashi Tooru, Saito Akio, Tanaka Satoru, YASUI Takeshi
Принадлежит: NIPPON STEEL & SUMITOMO METAL CORPORATION

The present invention provides a high-corrosion-resistance hot-dip galvanized steel sheet having excellent appearance uniformity. The steel sheet includes: a coating layer containing Al: 4 to 22 mass %, Mg: 1 to 6 mass %, and Si: 0.001 to 1 mass %, and a balance being composed of Zn and inevitable impurities formed on a surface, in which at an interface between the coating layer and a base steel sheet, MgSi phases and Ca phases each mainly composed of Ca or a Ca compound exist, and at least part of the MgSi phases precipitate by using the Ca phases as a nucleus. 1. A high-corrosion-resistance hot-dip galvanized steel sheet having excellent appearance uniformity , comprising:a coating layer containing Al: 4 to 22 mass %, Mg: 1 to 6 mass %, and Si: 0.001 to 1 mass %, and a balance being composed of Zn and inevitable impurities formed on a surface, wherein{'sub': 2', '2, 'at an interface between said coating layer and a base steel sheet, MgSi phases and Ca phases each mainly composed of Ca or a Ca compound exist, and at least part of the MgSi phases precipitate by using the Ca phases as a nucleus.'}2. The high-corrosion-resistance hot-dip galvanized steel sheet having excellent appearance uniformity according to claim 1 , wherein a density of the MgSi phases each having a circle-equivalent diameter of 2 μm or more out of the MgSi phases existing at the interface between said coating layer and the base steel sheet is 10 to 1000 pieces per 0.01 mm.3. The high-corrosion-resistance hot-dip galvanized steel sheet having excellent appearance uniformity according to claim 1 , wherein{'sub': '2', 'an average diameter of Al/MgZn/Zn ternary eutectic phases existing in said coating layer is 5 to 200 μm.'}4. The high-corrosion-resistance hot-dip galvanized steel sheet having excellent appearance uniformity according to claim 1 , whereinsaid coating layer further contains 0.000001 to 0.5 mass % of one or two or more selected from Ti, Ni, Zr, Sr, Hf, Sc, and B alone or in ...

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Номер записи: 83
13-02-2020 дата публикации

Crossbow correction device, molten metal plating facility, and crossbow correction method

Номер: US20200047234A1
Автор: Masao TAMBARA, Masashi Yoshikawa, Takashi Yonekura
Принадлежит: Primetals Technologies Japan Ltd

A crossbow correction device 16 for correcting crossbow of a steel strip S by a magnetic force during conveyance includes a plurality of electromagnets 57 a to 57 d, 67 a to 67 d arranged in a strip width direction of the steel strip S and facing each other so as to sandwich the steel strip S in a strip thickness direction, a moving mechanism 51 to 54, 61 to 64 capable of moving the electromagnets 57 a to 57 d , 67 a to 67 d relative to the steel strip S, and a controller 17 configured to operate the moving mechanism 51 to 54, 61 to 64, based on a current value flowing through the electromagnets 57 a to 57 d, 67 a to 67 d.

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Номер записи: 84
14-02-2019 дата публикации

HOT-DIP GALVANIZATION SYSTEM AND HOT-DIP GALVANIZATION METHOD

Номер: US20190048452A1
Автор: BAUMGÜRTEL Lars, PINGER Thomas
Принадлежит: FONTAINE HOLDINGS NV

The invention relates to a system and a method for the hot-dip galvanization of components, preferably for mass-production hot-dip galvanization of a plurality of identical or similar components, in particular in batches, preferably for batch galvanization. 115-. (canceled)16. A hot-dip galvanization system for the large-scale hot-dip galvanization of a plurality of identical or similar components , a conveying device with at least one goods carrier for the grouped conveying of a plurality of components to be attached on the goods carrier;', 'a degreasing device for degreasing the components;', 'a surface-treating device for the chemical, mechanical or chemical and mechanical surface-treatment of the components;', 'a flux application device for applying a flux to the surface of the components; and', 'a hot-dip galvanizing device for hot-dip galvanizing the components, wherein the hot-dip galvanizing device comprises a galvanizing bath comprising a zinc/aluminum alloy in a liquid molten form;, 'wherein the system compriseswherein the system further comprises a separating and singling device for the supply, immersion and emersion of a single component separated and singled out from the grouped plurality of components attached on the goods carrier to, into and out of the galvanizing bath of the hot-dip galvanizing device,wherein the separating and singling device comprises at least one separating and singling means,wherein, during the separation and singling out, each component can be precisely manipulated and treated by means of specific rotating and steering movements upon emersion from the galvanizing bath, andwherein the separating and singling means is designed or equipped in such a way that all of the components separated and singled out from the grouped plurality of components attached on the goods carrier are moved, after emersion, in an identical way and such that drip edges or drip streaks are removed.17. The system as claimed in claim 16 ,wherein the ...

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Номер записи: 85
25-02-2021 дата публикации

HOT DIP METAL PLATING BATH ROLL AND METHOD OF PRODUCTION OF HOT DIP METAL PLATING BATH ROLL

Номер: US20210054491A1
Автор: KONNAI Hayato, KURISU Yasushi, MIGITA Atsushi, MISHIMA Yuuki, NISHIMURA Futoshi, Uchida Satoshi
Принадлежит:

A hot dip metal plating bath roll preventing flaws in a steel sheet due to a bath roll, realizing stable running at a high speed, and improving the productivity of a plated steel sheet, which hot dip metal plating bath roll having vertical grooves each formed on an outer circumferential surface of the roll and including two first curved parts projecting to the outside of the roll and at least one second curved part arranged between the two first curved part and projecting to the inside of the roll and horizontal grooves each formed on an outer circumferential surface of the roll along a barrel length direction of the roll, a pitch P(mm) and depth d(mm) of the vertical grooves satisfying 1.0≤P≤10, 0.2≤d≤5, and d≤P, a depth d(mm) being 60% to 150% of the depth dof the vertical grooves, and a width w(mm) of the horizontal grooves being 2 times or more of the depth dor 2 times or more of a radius of curvature (mm) of curved surfaces forming bottom parts of the horizontal grooves and 0.7 times or less of a pitch P(mm), the pitch P(mm) of the horizontal grooves being 1.0≤P≤10. 19-. (canceled)10. A hot dip metal plating bath roll ,which hot dip metal plating bath roll havingvertical grooves each formed on an outer circumferential surface of the roll along a circumferential direction of said roll and including two first curved parts projecting to the outside of said roll and one or two second curved part arranged between said two first curved parts, projecting to the inside of said roll and configuring a recessed part by continuing from said two first curved parts respectively andhorizontal grooves each formed on an outer circumferential surface of said roll along a barrel length direction of said roll,{'sub': 1', '1, 'claim-text': [{'br': None, 'i': 'P', 'sub': '1', '1.0≤≤10\u2003\u2003(101)'}, {'br': None, 'i': 'd', 'sub': '1', '0.2≤≤5\u2003\u2003(102)'}, {'br': None, 'i': d', 'P, 'sub': 1', '1, '/2\u2003\u2003(103),'}], 'a pitch P(mm) and depth d(mm) of said vertical ...

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Номер записи: 86
22-02-2018 дата публикации

Method of producing galvannealed steel sheet

Номер: US20180051356A1
Автор: Gentaro Takeda, Masaru Miyake, Yoichi Makimizu, Yoshitsugu Suzuki
Принадлежит: JFE Steel Corp

A method of producing a galvannealed steel sheet whereby favorable coating appearance can be obtained with high coating adhesion even in the case of galvannealing a steel strip whose Si content is 0.2 mass % or more, and a decrease in tensile strength can be prevented by lowering the alloying temperature. Mixed gas of humidified gas and dry gas, and dry gas are supplied to a soaking zone in an annealing furnace. The mixed gas is timely supplied from a position of lower half of the soaking zone. The dry gas is timely supplied from near an upper hearth roll in the soaking zone, and furnace gas is timely discharged from a gas discharge port located higher than the upper hearth roll, to control a dew point in at least an uppermost part of the soaking zone to −20° C. or more and 0° C. or less.

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Номер записи: 87
22-02-2018 дата публикации

HOT-DIP Al-Zn-Mg-Si COATED STEEL SHEET AND METHOD OF PRODUCING SAME

Номер: US20180051366A1
Автор: ANDO Satoru, FURUTA Akihiko, Matsuzaki Akira, OKUMA Toshiyuki, Ooi Toshihiko, Sato Yohei, Suzuki Yoshitsugu, Tobiyama Yoichi, YOSHIDA Masahiro
Принадлежит: JFE STEEL CORPORATION

Provided is a hot-dip Al—Zn—Mg—Si coated steel sheet having good corrosion resistance in flat parts and edge parts, and also having excellent worked part corrosion resistance. The hot-dip Al—Zn—Mg—Si coated steel sheet includes a base steel sheet and a hot-dip coating on a surface of the base steel sheet. The hot-dip coating includes an interfacial alloy layer present at an interface with the base steel sheet and a main layer present on the interfacial alloy layer, and contains from 25 mass % to 80 mass % of Al, from greater than 0.6 mass % to 15 mass % of Si, and from greater than 0.1 mass % to 25 mass % of Mg. The Mg content and Si content in the hot-dip coating satisfy formula (1): 2. The hot-dip Al—Zn—Mg—Si coated steel sheet according to claim 1 , wherein{'sub': 2', '2, 'the main layer contains MgSi, and MgSi content in the main layer is 1.0 mass % or more.'}3. The hot-dip Al—Zn—Mg—Si coated steel sheet according to claim 1 , wherein{'sub': 2', '2, 'the main layer contains MgSi, and an area ratio of MgSi in a cross-section of the main layer is 1% or more.'}4. The hot-dip Al—Zn—Mg—Si coated steel sheet according to claim 1 , wherein{'sub': 2', '2, 'the main layer contains MgSi, and according to X-ray diffraction analysis, an intensity ratio of MgSi (111) planes having an interplanar spacing d of 0.367 nm relative to Al (200) planes having an interplanar spacing d of 0.202 nm is 0.01 or more.'}5. The hot-dip Al—Zn—Mg—Si coated steel sheet according to claim 1 , whereinthe interfacial alloy layer has a thickness of 1 μm or less.7. The hot-dip Al—Zn—Mg—Si coated steel sheet according to claim 1 , whereinthe hot-dip coating contains from 25 mass % to 80 mass % of Al, from greater than 2.3 mass % to 5 mass % of Si, and from 3 mass % to 10 mass % of Mg.8. The hot-dip Al—Zn—Mg—Si coated steel sheet according to claim 1 , whereinthe hot-dip coating contains from 25 mass % to 80 mass % of Al, from greater than 0.6 mass % to 15 mass % of Si, and from greater than 5 mass % ...

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Номер записи: 88
23-02-2017 дата публикации

System Including a Pump for Treating Wire in Molten Fluids

Номер: US20170051387A1
Автор: Thut Bruno
Принадлежит:

A system for treating wire includes an elongated vessel that contains a molten fluid. A pump is disposed in the molten fluid in the vessel. The pump includes an elongated discharge conduit extending for at least a portion of the length of the vessel. Conveyance structure enables the wire to be conveyed through the molten fluid. Operation of the pump enables a temperature of the molten fluid in the vessel to be changed. The wire is heat treated as a result of passing through the molten fluid. 1. The system for treating wire of wherein said pump include a motor claim 12 , a pump shaft driven by said motor claim 12 , a base including an impeller chamber claim 12 , an impeller connected to said pump shaft and rotatably disposed in said impeller chamber claim 12 , said base including at least one inlet and at least one said pump outlet claim 12 , said elongated discharge conduit in fluid communication with said impeller chamber.2. (canceled)3. (canceled)4. The system of wherein said conveyance structure includes rollers.5. (canceled)6. The system of wherein said molten fluid is maintained at a temperature permitting said wire to be annealed as a result of moving through the molten fluid.7. The system of wherein said vessel is an elongated trough having a ratio of length to width of at least 5:1.8. The system of wherein said elongated conduit extends for at least 50% of the length of said trough.9. The system of wherein said elongated conduit extends for at least 75% of the length of said trough.10. The system of wherein said elongated conduit extends for at least 90% of the length of said trough.11. The system of wherein said pump is located adjacent an elongated sidewall of said trough.12. A system for treating wire claim 7 , comprising:an elongated vessel that contains a molten fluid;a pump disposed in the molten fluid in said vessel, wherein said pump includes an elongated conduit extending for at least a portion of the length of said vessel said elongated conduit ...

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Номер записи: 89
10-03-2022 дата публикации

Preparation Method of Carbon Nitride Electrode Material

Номер: US20220073349A1
Автор: Pan Bao, Qin Jiani, Wang Chuanyi
Принадлежит:

The invention discloses a preparation method of a carbon nitride (CN) electrode material. The preparation method comprises the following steps: (1) preparing a precursor film: immersing a clean conductive substrate A into a hot saturated CN precursor aqueous solution, then immediately taking out, after the surface being dried, a uniform precursor film layer on the conductive substrate A was formed. This step can be repeated several times to get different layers of precursor film on the substrate A; (2) preparing the CN electrode: the dry precursor film obtained in step () was encapsulated in a glass tube filled with N. Then the glass tube was inserted into a furnace with Natmosphere to calcinate. After calcination, the uniform CN film electrode was obtained. The method provided by the invention is simple and easy to implement, and convenient in used equipment, suitable for industrial application and popularization. 1. A preparation method of a carbon nitride electrode material , characterized by comprising the following steps:(1) Preparing a precursor film: vertically and rapidly immersing a clean conductive substrate A into a hot saturated CN precursor aqueous solution, then immediately taking out the conductive substrate A, forming a uniform precursor film layer on the conductive substrate A; after the surface being dried, adjusting the thickness of the precursor film layer by repeating the above steps of dipping and drying cycles for many times to form multiple layers, and naturally air-drying or drying the obtained precursor film in a 60° C. drying oven for later use;{'b': '1', 'sub': '2', '(2) Preparing the CN electrode: putting the dry precursor film obtained in step () into a glass tube, introducing nitrogen gas to discharge air in the tube, binding a tube opening with tin foil paper, then putting the glass tube into a furnace with Natmosphere to calcinate at a high temperature, and naturally cooling to obtain the uniform CN film electrode.'}21. The ...

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Номер записи: 90
03-03-2016 дата публикации

Steel Armor Wire Coatings

Номер: US20160059519A1
Автор: Barmatov Evgeny, Hughes Trevor, Protasov Vadim, Varkey Joseph, Wanjau Paul
Принадлежит:

A wire includes a ferrous core. The ferrous core can be coated. The coatings can include nickel, molybdenum, zinc and Fe. A process of forming a wire can include placing a metal strip alongside a ferrous wire core, bending the strip around the core, and seam welding the strip to form a metal tube around the core. The process of forming a wire can include applying a metal layer to a ferrous metal rod to form a plated rod, placing a metal strip alongside the rod, bending the strip around the rod, and seam welding the strip to form a metal tube around the rod. The process of forming a wire can include coating a ferrous wire core with a layer of nickel, molybdenum or a nickel alloy that circumferentially surrounds the ferrous wire core. 1. A wire comprising:a ferrous wire core;an interface layer circumferentially surrounding the ferrous wire core, the interface layercomprising nickel, molybdenum or a nickel alloy; andan outer layer circumferentially surrounding the interface layer, the outer layer comprising zinc or a zinc alloy.2. The wire of claim 1 , wherein the ferrous wire core is steel.3. The wire of claim 1 , wherein the interface layer has a thickness of between 2 and 60 microns.4. The wire of claim 1 , wherein outer layer has a thickness of between 1 and 50 microns.5. The wire of claim 1 , wherein the outer layer comprises the zinc alloy claim 1 , and wherein the zinc allow comprises:binary Zn—Ni or Zn—Co alloy; orternary Zn—Ni—Co, Zn—Ni—Mo or Zn—Co—Mo alloy.6. The wire of claim 1 , further comprising an Fe layer claim 1 , wherein the Fe layer circumferentially surrounds the interface layer and is circumferentially surrounded by the outer layer.7. The wire of claim 6 , wherein the Fe layer has a thickness of between 2 and 20 microns.8. The wire of claim 1 , further comprising a galvanized zinc coating.9. A wire comprising:a ferrous wire core;an inner zinc layer circumferentially surrounding the ferrous wire core;an Fe layer circumferentially surrounding the ...

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Номер записи: 91
04-03-2021 дата публикации

PASS ROLL FOR HOT-DIP GALVANIZED STEEL SHEET MANUFACTURING FACILITY, HOT-DIP GALVANIZED STEEL SHEET MANUFACTURING FACILITY, AND HOT-DIP GALVANIZED STEEL SHEET MANUFACTURING METHOD

Номер: US20210062319A1
Автор: Oohashi Tooru
Принадлежит: NIPPON STEEL CORPORATION

A pass roll for a hot-dip galvanized steel sheet manufacturing facility, the pass roll includes: a roll body; and a heat-resistant felt layer covering the roll body, wherein the heat-resistant felt layer has a thermal decomposition temperature of 420° C. or higher and has a surface hardness evaluation index at 400° C. of more than 0.11 μm/N. 1. A pass roll for a hot-dip galvanized steel sheet manufacturing facility , the pass roll comprising:a roll body; anda heat-resistant felt layer covering the roll body, whereinthe heat-resistant felt layer has a thermal decomposition temperature of 420° C. or higher and has a surface hardness evaluation index at 400° C. of more than 0.11 μm/N.2. The pass roll for the hot-dip galvanized steel sheet manufacturing facility according to claim 1 , whereinthe heat-resistant felt layer is in contact with a surface of the roll body.3. The pass roll for the hot-dip galvanized steel sheet manufacturing facility according to claim 1 , whereinthe heat-resistant felt layer is made of polyparaphenylene benzobisoxazole fibers.4. The pass roll for the hot-dip galvanized steel sheet manufacturing facility according to claim 1 , whereina thickness of the heat-resistant felt layer is 1 to 20 mm.5. A hot-dip galvanized steel sheet manufacturing facility claim 1 , wherein{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'the pass roll according to is a roll configured to pass a steel strip subjected to hot-dip galvanizing in a galvanizing bath.'}6. A hot-dip galvanized steel sheet manufacturing method for manufacturing a hot-dip galvanized steel sheet by immersing a steel strip in a galvanizing bath on a steel sheet manufacturing line claim 1 , whereinthe hot-dip galvanized steel sheet is manufactured by using, as a pass roll configured to pass the steel strip subjected to hot-dip galvanizing in the galvanizing bath, a pass roll comprising a roll body covered with a heat-resistant felt layer, the heat-resistant felt layer having a thermal ...

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Номер записи: 92
20-02-2020 дата публикации

WELDED MEMBER AND METHOD FOR MANUFACTURING SAME

Номер: US20200056643A1
Автор: Hosomi Kazuaki, Nakako Takefumi, NOBUTOKI Tomokazu
Принадлежит:

A welded member includes a hot dip Zn-based alloy coated steel sheet as a base material and has excellent corrosion resistance and weld bead shear strength. In the welded member in which a lower sheet and an upper sheet, which are hot dip Zn-based alloy coated steel sheets, are stacked and arc-welded together, a weld bead is formed so that a cross-sectional width W satisfies the following formula 2T≤W≤6T, and a blowhole occupancy Br represented by the following formula (2) becomes not more than 50%: Br=(Σdi/L)×100, where T represents a thickness of the hot dip Zn-based alloy coated steel sheet, di represents a length of an i-th blowhole observed in X-ray radiography, and L represents a length of the weld bead. 1. A welded member comprising:a first hot dip Zn-based alloy coated steel sheet;a second hot dip Zn-based alloy coated steel sheet stacked on and arc-welded to a first sheet surface of the first hot dip Zn-based alloy coated steel sheet; anda weld bead that is provided on the first sheet surface such that the first hot dip Zn-based alloy coated steel sheet and the second hot dip Zn-based alloy coated steel sheet are welded together by the weld bead,{'sup': 2', '2, 'each of the first hot dip Zn-based alloy coated steel sheet and the second hot dip Zn-based alloy coated steel sheet having a coating weight of 15 g/mto 250 g/mper surface,'}the weld bead being formed such that a cross-sectional width W satisfies a formula (1) below and a blowhole occupancy Br represented by a formula (2) below becomes not more than 50%, the cross-sectional width W being a width of a cross section from one boundary between a Zn-based coating layer and the weld bead to the other boundary between the Zn-based coating layer and the weld bead on the first sheet surface, and the cross section being obtained by cutting the weld bead by a plane orthogonal to a direction in which the weld bead extends,the weld bead having at least two protrusion parts each of which protrudes into the first ...

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Номер записи: 93
22-05-2014 дата публикации

Systems and Methods Implementing Layers of Metallic Glass-Based Materials

Номер: US20140141164A1
Автор: Hofmann Douglas
Принадлежит: California Institute of Technology

Systems and methods in accordance with embodiments of the invention implement layers of metallic glass-based materials. In one embodiment, a method of fabricating a layer of metallic glass includes: applying a coating layer of liquid phase metallic glass to an object, the coating layer being applied in a sufficient quantity such that the surface tension of the liquid phase metallic glass causes the coating layer to have a smooth surface; where the metallic glass has a critical cooling rate less than 1000 K/s; and cooling the coating layer of liquid phase metallic glass to form a layer of solid phase metallic glass. 1. A method of fabricating a layer of metallic glass comprising: 'wherein the metallic glass has a critical cooling rate less than 1000 K/s; and', 'applying a coating layer of liquid phase metallic glass to an object, the coating layer being applied in a sufficient quantity such that the surface tension of the liquid phase metallic glass causes the coating layer to have a smooth surface;'}cooling the coating layer of liquid phase metallic glass to form a layer of solid phase metallic glass.2. The method of claim 1 , wherein the thickness of the coating layer is greater than 50 micrometers.3. The method of claim 1 , wherein the thickness of the coating layer is greater than 1 mm.4. The method of claim 1 , wherein the thickness of the coating layer is thinner than the plastic zone size of the metallic glass.5. The method of claim 1 , wherein the object comprises one of aluminum claim 1 , titanium claim 1 , steel claim 1 , cobalt claim 1 , graphite claim 1 , quartz claim 1 , silicon carbide claim 1 , and mixtures thereof.6. The method of claim 1 , wherein the metallic glass is a composition that has a glass forming ability such that it can be readily cast in to parts having a thickness greater than approximately 1 mm.7. The method of claim 1 , wherein the metallic glass is a composition that has a glass forming ability such that it can be readily cast in to ...

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Номер записи: 94
12-03-2015 дата публикации

DEVICE FOR STRIP GUIDANCE IN A HOT MEDIUM (I)

Номер: US20150068454A1
Автор: Blumenau Marc, Denner Tobias, Eisner Frank, Gusek Christopher, Jindra Fred, Klatt Christian, Schoenenberg Rudolf, Wemhoener Jens, Willeke Bert-Reiner
Принадлежит:

The invention relates to a device for strip guidance in a hot medium, comprising a deflection roller () mounted on supporting arms () and a carrier device holding the supporting arms (). The device is characterized in that one of the supporting arms () is mounted on the carrier device by means of a floating bearing (), wherein the floating bearing () allows the mounted supporting arm on the carrier device to move parallel to the longitudinal direction of the deflection roller (), and in that an elastic counter element (), which acts parallel to the longitudinal direction of the deflection roller () upon the supporting arm () mounted on the floating bearing (), is present and counteracts an increasing distance between the supporting arms (). In this way, the technical problems of offsetting a temperature-induced length change of the deflection roller and avoiding an uncontrolled movement of the system are solved. 124-. (canceled)25. A device for strip guidance in a hot medium , comprising{'b': 3', '38', '1', '2', '34', '37', '54', '57, 'a deflection roller (, ) which is mounted on supporting arms (, , , , , ) and'}{'b': 1', '2', '34', '37', '54', '57, 'claim-text': characterized in that', {'b': 1', '2', '34', '37', '54', '57', '5', '5', '3', '38, 'one of the supporting arms (, , , , , ) is mounted on a carrier device by means of a floating bearing (), wherein the floating bearing () allows the supporting arm mounted thereby on the carrier device to move parallel to the longitudinal direction of the deflection roller (, ), and'}, {'b': 12', '3', '38', '1', '2', '34', '37', '54', '57', '5', '1', '2', '34', '37', '54', '57, 'in that an elastic counterelement () acting parallel to the longitudinal direction of the deflection roller (, ) on the supporting arm (, , , , , ) mounted on the floating bearing () is present and counteracts an increasing distance between the supporting arms (, , , , , ).'}], 'a carrier device holding the supporting arms (, , , , , ),'}266. The ...

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Номер записи: 95
28-02-2019 дата публикации

METHOD FOR OPERATING A COATING DEVICE FOR COATING A METAL STRIP, AND COATING DEVICE

Номер: US20190062887A1
Автор: Behrens Holger, Daube Thomas, Fontaine Dominique, KÜMMEL Lutz, Zielenbach Michael
Принадлежит:

A method for operating a coating device for coating a metal strip. The corresponding coating device has an electromagnetic strip-stabilizing device having a plurality of electromagnetic actuators or coils for applying forces to the metal strip. In order to ensure that the strip-stabilizing device is operated only within the operating limits thereof, the magnitudes of the set currents for the actuators or the coils are compared with a specified current threshold value or the forces applied to the metal strip by the actuators are compared with a specified force threshold value and the correction roller is moved into such an adjustment position that the magnitudes of the set currents are below the current threshold value or the magnitudes of the forces are below the force threshold value. 18-. (canceled)9. A method for operating a coating device for coating a metal strip , wherein the coating device has a container for a liquid coating medium , a correction roller for adjustment against the metal strip , a stripping device having nozzles for blowing excess coating medium off the metal strip after the strip exits from the container , distance sensors for measuring the actual position of the metal strip after leaving the container and a strip stabilizing device arranged downstream of the stripping device in a transport direction of the metal strip , having a plurality of electromagnetic actuators for applying forces to the metal strip , wherein the method comprises the steps of:controlling a position of the metal strip to a predefined target position in a slot of the stripping device by way of correspondingly suitable setting of currents of the actuators;comparing magnitudes of the forces exerted on the metal strip by the actuators with a predefined force threshold value;moving the correction roller to an adjustment position so that the magnitudes of the forces lie below the force threshold value; andconverting the actual position of the metal strip measured by the ...

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Номер записи: 96
29-05-2014 дата публикации

Method for Hot Dip Coating of a Flat Steel Product

Номер: US20140144550A1
Автор: Fred Jindra, Hans-Joachim Heiler, Hans-Joachim Krautschick, Marc Blumenau, Rudolf Schoenenberg
Принадлежит: THYSSENKRUPP STEEL EUROPE AG

A method for hot dip coating a flat stainless steel product with more than 5 wt. % Cr with a protective metallic coating by: heating the flat steel product under an oxygen-free heating atmosphere to 100° C.-600° C. within 1-30 seconds; continuing heating to a holding temperature of 750° C.-950° C., by heating to 550° C.-800° C. under an inert or reducing atmosphere, holding within this temperature window for 1 to 15 seconds under an oxidising atmosphere, and continuing heating under an inert or reducing atmosphere, until the holding temperature is reached; holding at the holding temperature for 10-120 seconds under a reducing atmosphere; and passing the flat steel product through a nozzle area under an inert or reducing atmosphere at 430°-780° C. and into a molten bath in which the flat steel product is coated with the metallic coating.

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Номер записи: 97
27-02-2020 дата публикации

HOT-DIP GALVANIZED STEEL PLATE WITH EXCELLENT BAKE HARDENABILITY AND ANTI-AGING PROPERTY AT ROOM TEMPERATURE AND MANUFACTURING METHOD THEREFOR

Номер: US20200063233A1
Автор: HAN Sang-Ho, LEE Je-Woong
Принадлежит:

Provided is a hot-dip galvanized steel plate which is applicable as a material for a vehicle outer panel and has an excellent bake hardenability and anti-aging property at room temperature, and a method for manufacturing a hot-dip galvanized steel plate, the method comprising a process including the steps of: winding a hot-rolled steel plate, followed by cooling at a speed of 0.002-0.027° C./sec; cold-rolling the cooled steel plate; continuously annealing the cold-rolled steel plate; and cooling the annealed steel plate in the multi-stage manner of primary to third rounds. 1. A hot-dip galvanized steel sheet , comprising:a cold-rolled steel sheet; anda hot-dip galvanized layer formed on the cold-rolled steel sheet,wherein the cold-rolled steel sheet comprises, by weight %, 0.005 to 0.08% of C, 1.3 to 2.3% of Mn, 1.0% or less of Cr, excluding 0%, 0.1% or less of P, excluding 0%, 0.01% or less of S, excluding 0%, 0.01% or less of N, excluding 0%, 0.01 to 0.06% of sol.Al, and a balance of Fe and inevitable impurities,wherein ferrite and martensite are included as a microstructure, and {'br': None, 'i': K=C', '/C, 'sub': 1', '2, '[Expression 1]'}, 'wherein, K, an average concentration ratio of solid solution carbon before and after baking determined by Expression 1 below, is 0.2 to 0.7,'}{'sub': 1', '2, 'where Cis an average concentration of solid solution C present within 100 nm in a direction of a ferrite grain from ferrite and martensite grain boundaries at a t/4 position taken in a sheet thickness direction before baking, t indicates a thickness of the cold-rolled steel sheet, and Cis an average concentration of solid solution C present within 100 nm in a direction of a ferrite grain from ferrite and martensite grain boundaries at a t/4 position taken in a sheet thickness direction after baking performed for 20 minutes at 140° C.'}2. The hot-dip galvanized steel sheet of claim 1 , wherein the cold-rolled steel sheet comprises 90 to 99 area % of ferrite and 1 to 10 ...

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Номер записи: 98
12-03-2015 дата публикации

BLACK-PLATED STEEL SHEET

Номер: US20150072166A1
Автор: NAKANO Tadashi, TAKETSU Hirofumi, Yamamoto Masaya
Принадлежит: NISSHIN STEEL CO., LTD.

A black-plated steel sheet has a Zn-plating layer containing molten Al and Mg, containing Al in the amount of 1.0-22.0 mass %, containing Mg in the amount of 1.3-10.0 mass %, and having a Zn black oxide distributed in a lamella pattern in the plating layer. The Zn black oxide is a Zn oxide derived from a ZnMg phase. The brightness of the surface of the Zn-plating layer containing the molten Al and Mg has an L* value of 60 or less. 1. A black-plated steel sheet comprising a hot-dip Al and Mg-containing Zn-plated layer which comprises 1.0 to 22.0 mass % of Al and 1.3 to 10.0 mass % of Mg , with a black oxide of Zn distributed in a lamellar form in the plating layer ,the hot-dip Al and Mg-containing Zn-plated layer having a surface lightness represented by L* value of 60 or less.2. (canceled)3. The black-plated steel sheet according to claim 1 , wherein the black oxide of Zn is an oxide of Zn derived from a ZnMg phase.4. The black-plated steel sheet according to claim 1 , further comprising an inorganic coating film on the hot-dip Al and Mg-containing Zn-plated layer.5. The black-plated steel sheet according to claim 4 , wherein the inorganic coating film comprises one or more compounds selected from the group consisting of an oxide of valve metal claim 4 , an oxoate of valve metal claim 4 , a hydroxide of valve metal claim 4 , a phosphate of valve metal claim 4 , and a fluoride of valve metal claim 4 , andthe valve metal is one or more metals selected from the group consisting of Ti, Zr, Hf, V, Nb, Ta, W, Si and Al.6. (canceled)7. The black-plated steel sheet according to claim 1 , further comprising an organic resin coating film on the hot-dip Al and Mg-containing Zn-plated layer.8. The black-plated steel sheet according to claim 7 , wherein an organic resin comprised in the organic resin coating film is urethane-based resin obtained by the reaction of polyols consisting of an ether-based polyol and an ester-based polyol with polyisocyanate claim 7 ,a proportion of ...

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Номер записи: 99
11-03-2021 дата публикации

STEEL SHEET WITH EXCELLENT BAKE HARDENING PROPERTIES AND PLATING ADHESION AND MANUFACTURING METHOD THEREFOR

Номер: US20210071277A1
Автор: HAN Sang-Ho, LEE Je-Woong
Принадлежит:

Provided is a steel sheet used as a material for an automotive exterior panel, etc., and a method for manufacturing the same. More particularly, provided is a cold-rolled steel sheet and a hot-dip galvanized steel sheet, which have excellent bake hardening properties, plating adhesion, and anti-aging properties, and a method of manufacturing the same. 1. A steel sheet having excellent bake hardening and plating adhesion , comprising:in weight %, 0.005 to 0.08% of carbon (C), 1.3 to 2.3% of manganese (Mn), 0.03% or less (excluding 0%) of phosphorus (P), 0.01% or less (excluding 0%) of sulfur (S), 0.01% or less (excluding 0%) of nitrogen (N), 0.01 to 0.06% of aluminum (sol.Al), 1.0% or less (excluding 0%) of chromium (Cr), 0.1% or less (excluding 0%) of antimony (Sb), at least one selected from the group consisting of silicon (Si): 0.3% or less (excluding 0%), molybdenum (Mo): 0.2% or less (excluding 0%) and boron (B): 0.003% or less (excluding 0%), a remainder of iron (Fe), and unavoidable impurities, andas a microstructure, in area %, 1 to 5% of martensite and remaining ferrite, {'br': None, 'i': 'Cgb/Cf≥', '3.5\u2003\u2003[Relationship 1]'}, 'wherein a relationship (Cgb/Cf) between an Sb average area occupancy ratio (Cgb, %) of grain boundaries of a martensite phase and a ferrite phase and an average Sb area occupancy ratio (Cf, %) in a ferrite phase within 1 μm around the martensite phase, determined by the following relationship 1, at a point of ¼t in a thickness direction of the steel sheet (where t denotes a thickness (mm) of a cold rolled steel sheet is 3.5 or more,'}(where Cgb (%) indicates an Sb average area occupancy ratio of grain boundaries of a martensitic phase and a ferrite phase at a point of ¼t of a cold rolled steel sheet, and Cf (%) indicates an average Sb area occupancy ratio of a ferrite phase within 1 μm around the martensite phase).2. The steel sheet having excellent bake hardening and plating adhesion of claim 1 , wherein the steel sheet ...

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Номер записи: 100