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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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Применить Всего найдено 2. Отображено 2.
15-08-2023 дата публикации

Amorphous coated copper powder and preparation method thereof

Номер: CN116586609A
Автор: QIANG JIANBING, WANG YINGMIN, SHAN GUANGCUN, CHEN XUZHOU, DENG XIANG, ZHANG JUNFENG, WANG JIANBAO, LIAN YOUYUN, MI SHAOBO, ZHANG JILIANG, FANG CANFENG
Принадлежит:

The invention discloses amorphous coated copper powder and a preparation method thereof, and belongs to the technical field of powder preparation of powder metallurgy. The copper powder is formed by covering the surfaces of copper powder particles with a layer of amorphous thin film with the thickness of 10-30 nm, the chemical component formula of a coating layer is Al100-a (Cu100-bYb) a, a is larger than or equal to 10 and smaller than or equal to 25, and b is larger than or equal to 25 and smaller than or equal to 45. Firstly, Al100-a (Cu100-bYb) a amorphous alloy powder with the melting point lower than 700 DEG C is prepared through electric arc melting in combination with the melt atomization technology, the Al100-a (Cu100-bYb) a amorphous alloy powder serves as a coating layer mother material to be mixed with a copper powder body, high-energy ball milling is conducted, Al100-a (Cu100-bYb) a amorphous alloy powder adheres to and spreads on the surface of the copper powder, and finally ...

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Номер записи: 1
13-04-2021 дата публикации

Novel fixture for vacuum brazing

Номер: CN212945939U
Автор: FENG FAN, LIAN YOUYUN, WANG JIANBAO, CHEN ZHE, LIU XIANG, WANG JIN, 封范, 练友运, 王建豹, 陈哲, 刘翔, 王金
Принадлежит: SOUTHWESTERN INST PHYSICS, SOUTHWESTERN INSTITUTE OF PHYSICS, 核工业西南物理研究院

The utility model belongs to clamps, and particularly relates to a novel clamp for vacuum brazing. A novel clamp for vacuum brazing comprises a bottom plate, side plates fixed on the bottom plate in parallel, a force bearing beam parallel to the bottom plate and arranged above the side plates, a clamping assembly is arranged on the force bearing beam, and a workpiece is clamped by the clamping assembly and the bottom plate. The clamp has the remarkable effects that the problems of positioning deviation of a common clamp and equal degree matching between different modules are solved, and acting force applied by a nut is converted into balanced acting force along a bolt column through the design of the upper fixing block, the lower fixing block, the upper elastic piece and the lower elastic piece; and through the cooperation of the bottom plate and the bolt column, the acting force achieves accurate positioning between different modules through the positioning block.

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Номер записи: 2