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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 3. Отображено 3.
04-07-2023 дата публикации

Material fluidity experimental device based on multiple spiral runners and mounting method

Номер: CN116386441A
Принадлежит:

The invention discloses a material fluidity experiment device based on multiple spiral runners and an installation method, and belongs to the technical field of investment casting teaching experiment instruments and equipment. According to the technical scheme, the material fluidity experiment device comprises a sprue device, a mold, a temperature control system and a base from top to bottom in sequence, the mold comprises an upper mold plate and a lower mold plate, a sprue gate is formed in the lower mold plate, the lower mold plate is provided with a plurality of spiral runners extending outwards along the sprue gate, the section of each spiral runner is semicircular, and the temperature control system is arranged on the base. And the radius values of the sections of the spiral runners are different. The device and the method have the beneficial effects that the fluidity test requirements of the same material in runners with different section sizes under the conditions of the same time ...

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18-07-2023 дата публикации

Novel heating plate based on mobility experiment teaching equipment and preparation method thereof

Номер: CN116456514A
Принадлежит:

The invention discloses a novel heating plate based on fluidity experiment teaching equipment and a preparation method thereof, and belongs to the technical field of investment casting teaching experiment instruments and equipment. According to the technical scheme, the novel heating plate sequentially comprises an aluminum alloy mold bottom plate, a heat conduction gel layer, an insulation heat conduction film layer, a heating element, a glass fiber heat preservation cotton insulation heat insulation film layer, a silica gel foaming heat preservation cotton leveling layer, a polyurethane heat preservation layer and a mold protection bottom shell. The heating element is a flat double-spiral heating element formed by combining a metal wire into two strands and surrounding the metal wire from the center to the periphery, the glass fiber layer heat preservation cotton insulation and heat insulation film layer comprises glass fiber tows and glass fiber cloth, and gaps of the flat double-spiral ...

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07-07-2023 дата публикации

Preparation method of wax-repellent coating on surface of flow channel plate of fluidity experiment mold

Номер: CN116393345A
Принадлежит:

The invention discloses a preparation method of a wax-repellent coating on the surface of a flow channel plate of a flowability experiment mold, and belongs to the technical field of preparation of wax-repellent coating materials. According to the technical scheme, the method comprises the following steps that shot peening strengthening treatment and aging treatment are conducted on the surface of the mold runner plate; ultrasonically cleaning and drying the mold runner plate, putting the mold runner plate into a mixed solution of hydrochloric acid and oxalic acid for etching, uniformly stirring, cleaning with deionized water, and drying; putting the mold runner plate into boiling distilled water for treatment, then putting the mold runner plate into a closed container, and filling nitrogen for drying; preparing a perfluoropolyether siloxane solution, soaking the mold runner plate in the solution, taking out the mold runner plate, standing, cleaning the mold runner plate with deionized ...

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