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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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Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 8. Отображено 8.
23-07-2014 дата публикации

Brazing auxiliary friction stir welding method suitable for aluminum and steel dissimilar material lap joint

Номер: CN103934584A
Автор: HUANG YONGXIAN, WAN LONG, GUO WEIQIANG, HUANG TIFANG, LYU SHIXIONG, LYU ZONGLIANG, WANG YAOBIN
Принадлежит:

The invention discloses a brazing auxiliary friction stir welding method suitable for aluminum and steel dissimilar material lap joint. A pure zinc or aluminum and zinc sheet is added to the lap joint position of a steel plate and an aluminum plate, the sheet is molten due to heat generated by friction and deformation generated in the friction stir process, the pure zinc or aluminum and zinc sheet serves as a middle transition layer of an aluminum and steel connector, it can be avoided that brittle intermetallic compounds are formed between aluminum and steel, effective lap joint is formed between the steel plate and the aluminum plate, and eventually an aluminum and steel dissimilar material lap joint connector which is attractive in appearance of weld, excellent in mechanical property and reliable in strength can be acquired.

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Номер записи: 1
11-08-2023 дата публикации

Preparation method and application of clear liquid calcium magnesium fertilizer capable of being mixed with phosphate for use

Номер: CN116573961A
Автор: LIU ZHONGYI, TANG JIACHUAN, WANG ZHENGGANG, LYU ZONGLIANG, LI CHANG, WANG LAIQUAN, LI GUANLIANG, LYU CHENG, ZHANG HUOBIN
Принадлежит:

The invention discloses a preparation method and application of a clear liquid calcium magnesium fertilizer capable of being mixed with phosphate for use, and relates to the technical field of fertilizer production. The preparation method of the clear liquid calcium-magnesium fertilizer capable of being mixed with phosphate for use comprises three steps of raw material selection, liquid calcium-magnesium fertilizer preparation, dilution and mixing. According to the design, calcium magnesium and phosphorus are spatially separated, meanwhile, certain buffering agents, stabilizing agents and anti-freezing agents are added into the calcium magnesium liquid fertilizer, so that the product obtains a buffering system, and the requirement for mixing calcium magnesium and phosphorus can be met when the liquid calcium magnesium fertilizer is used; the calcium-magnesium liquid product and the phosphate are respectively and independently dissolved by adopting a secondary dilution method, and then diluents ...

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Номер записи: 2
02-05-2023 дата публикации

Method for promoting rapid germination and growth of ratooning rice stubble of whole-plant silage rice

Номер: CN116034834A
Автор: TANG JIACHUAN, LIU ZHONGYI, LI XUYI, OUYANG YUYUAN, LI DACHANG, LYU ZONGLIANG, LI HAIBO, WANG LAIQUAN, LI GUANLIANG, LYU CHENG
Принадлежит:

The invention discloses a method for promoting rapid germination and growth of ratooning rice stumps of whole-plant silage rice, and relates to the technical field of rice planting. The method comprises the steps of soil turning and reclamation, rice seedling planting, first season rice fertilization, first season rice straw harvesting, rice stubble irrigation, ratooning rice fertilization, regular deinsectization, ratooning rice harvesting and the like. The special formula fertilizer capable of promoting growth of stems, leaves and root systems of rice is specially designed for the purpose of harvesting whole-plant silage rice to regulate and control growth of rice seedlings, high pertinence and applicability are achieved, the planting benefits of farmers are remarkably improved, the grain yield is guaranteed, and the yield of rice in the regeneration season is high; the yield level of first-season rice in a common planting mode can be achieved, the grain yield is hardly reduced, and the ...

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Номер записи: 3
02-07-2014 дата публикации

Friction-stir welding method for generating excess weld metal through additional top plate

Номер: CN103894725A
Автор: HUANG YONGXIAN, WANG YAOBIN, WAN LONG, HUANG TIFANG, LYU SHIXIONG, LYU ZONGLIANG
Принадлежит:

The invention provides a friction-stir welding method for generating excess weld metal through an additional top plate. The method includes the steps that first, a welded workpiece is clamped, the top plate is placed on the top, and a stirring head is aligned with the butt-connection face of the welded workpiece after the assembly; second, the stirring head is rotationally pressed downwards and penetrates through the top plate to be pressed into the welded workpiece till a shaft shoulder of the stirring head makes contact with the top plate, and then the stirring head is moved to perform friction-stir welding; third, the workpiece is detached after welding and clamped on a milling machine, and a milling cutter is aligned with a welding joint of the top plate after the assembly; fourth, the milling amount is adjusted, the milling is performed only one time, the separated top plate can be taken down easily after the milling, and welding assemblies generating excess weld metal are acquired ...

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Номер записи: 4
02-07-2014 дата публикации

Steel surface roughing auxiliary stirring friction welding method for aluminum and steel dissimilar material lap connection

Номер: CN103894724A
Автор: HUANG YONGXIAN, WAN LONG, KE YI, LYU SHIXIONG, LYU ZONGLIANG, HUANG TIFANG, WANG YAOBIN
Принадлежит:

The invention relates to a steel surface roughing auxiliary stirring friction welding method for aluminum and steel dissimilar material lap connection. A fine convex-concave structure is obtained on the surface of a lap connection position of a steel plate through a roughing method, heat is generated through friction and plastic deformation of a stirring head and an aluminum plate, softened aluminum alloy is combined with the convex-concave structure of the surface of the roughed steel plate, the effective combination area is increased, a brittle intermetallic compound is suppressed from being formed between aluminum and steel, and effective and high-quality lap connection is formed between the steel plate and the aluminum plate. An aluminum steel dissimilar connector with beautiful formed welding joints, a good mechanical property and reliable strength is finally obtained, the welding operation process is simple, the welding cycle is effectively shortened, and automation is achieved easily ...

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Номер записи: 5
02-07-2014 дата публикации

Stirring friction welding method with pre-welding and post-welding dual ultrasonic synchronous vibration assisting

Номер: CN103894721A
Автор: HUANG YONGXIAN, WAN LONG, LYU SHIXIONG, GUO WEIQIANG, LYU ZONGLIANG, WANG YAOBIN, HUANG TIFANG
Принадлежит:

The invention discloses a stirring friction welding method with pre-welding and post-welding dual ultrasonic synchronous vibration assisting. According to the method, the ultrasonic wave is exerted on a weld joint in the welding process, stirring friction welding with pre-welding and post-welding dual ultrasonic synchronous vibration assisting is achieved, the constitutive relation of a material is changed through the ultrasonic wave, the resistance to deformation of the material is lowered through the ultrasonic vibration exerted before welding, the welding resistance subjected by a stirring head in the welding process is reduced, the welding speed is improved, the welding quality is improved, and the applicable range of welding parameters is enlarged. Grain refinement is produced on the material in the weld joint area with the high temperature through the ultrasonic vibration exerted after welding, and the mechanical property of a connector is improved. By means of the split-type design ...

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Номер записи: 6
04-07-2023 дата публикации

Coated feed dissolution rate detection method

Номер: CN116381132A
Автор: SHAO YONGJIE, WU BING, SHI LEI, CHEN YONGPO, CHEN MINGJIAN, WANG LAIQUAN, LYU ZONGLIANG
Принадлежит:

The invention relates to the technical field of animal feed, in particular to a coated feed dissolution rate detection method which comprises a preparation module, a detection module and a calculation module, stomach digestion work and intestine digestion work are simulated by preparing simulated gastric juice and simulated intestinal juice, zinc oxide is completely converted into Zn < 2 + > ions conveniently by preparing a hydrochloric acid solution with the concentration of 3 mol/L, and the dissolution rate of the coated feed is calculated. The method comprises the following steps: firstly, measuring a solution zinc oxide molecule after simulating intestinal digestion work, conveniently carrying out gastric juice digestion simulation work and intestinal juice digestion simulation work through cooperative use of a gastric juice digestion module, an intestinal juice digestion module and a processing module to obtain required data, and calculating the dissolution rate of a coating feed in ...

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Номер записи: 7
23-06-2023 дата публикации

Production process for preventing cross contamination of feed premix

Номер: CN116268212A
Автор: WANG LAIQUAN, LI DACHANG, LYU ZONGLIANG, ZHANG HUOBIN, WANG MINGJUN, SHAO YONGJIE
Принадлежит:

The invention discloses a feed premix cross contamination prevention production process which comprises the following steps: S1, feeding: feeding raw materials of a feed premix into a 2-cubic-meter conical closed stainless steel raw material tank according to a required amount, and immediately closing a valve by using a stainless steel butterfly valve after feeding is finished, s2, pressurizing: pressurizing a 2 cubic meter conical closed stainless steel raw material tank filled with a feed premix raw material to 0.3 Pa, and S3, decompressing and unloading: opening a discharge port valve of the pressurized stainless steel raw material tank filled with the feed premix raw material within a fixed time of 1-3 minutes, and enabling medium-pressure gas with the pressure of 0.3 Pa to be completely and cleanly taken away by a gate valve instantly. According to the material conveying device, materials needing to be operated are completely conveyed to a designated position, so that the materials ...

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Номер записи: 8