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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 3. Отображено 3.
09-06-2023 дата публикации

Electronic product accelerated storage life test evaluation method

Номер: CN116244882A
Автор: CAI JIANPING, XU HONGWU, WANG WEI, WU ZHAOCHONG, ZHANG XIAOJUN, ZHU WEI, CHEN FENGXI, ZHANG RUI, SONG RUNING
Принадлежит:

The invention discloses an electronic product accelerated storage life test evaluation method, which is characterized in that an accelerated storage test is divided into a constant temperature test and a temperature stepping test, and the temperature stepping test follows the constant temperature test in time; in the constant temperature test, tested products with the determined number of test products are placed at the constant temperature for the test time, and in the temperature stepping test, the temperature is raised according to a set temperature gradient on the basis of the test temperature of the constant temperature test until all the test products break down; recording the temperature and the test duration when the test product fails and corresponding failure components, forming a weak link list of the failure, analyzing an acceleration factor of the test, and further calculating the safe storage life or the dangerous storage life of the tested product; according to the invention ...

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Номер записи: 1
20-08-2008 дата публикации

Method and system for shaping investment pattern

Номер: CN0101244448A
Автор: WU ZHAOCHONG, ZHANG YIPENG, LU RUI, YAN LEHAO, ZHAOCHONG WU, YIPENG ZHANG, RUI LU, LEHAO YAN
Принадлежит:

The invention discloses a method and system for molding wax patterns. A solid wax is conveyed into the wider end of the space between a screw sleeve and an adjustable screw. The adjustable screw rotates to shift the solid wax to the narrow end of the space between the screw sleeve and the adjustable screw. The friction among the outer side of the adjustable screw, the inner wall of the screw sleeve and the solid wax is increasing to produce heat and to melt the solid wax. The melted wax enters an even temperature cylinder and is infused into a pressing-die device through a nozzle, and then a wax pattern is formed. The method and system for molding wax patterns has the advantages that the solid wax can be directly molded into the wax pattern; the working procedure is reduced; the heating and thermal insulation for the wax are reduced; energy is saved; the automation degree of the system is high; the yield of wax pattern is high; and the system adopts electric power as the energy, utilize ...

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Номер записи: 2
30-07-2008 дата публикации

Method of automatically controlling wax-shotting machine

Номер: CN0101229573A
Автор: WU ZHAOCHONG, LIU XIJUN, XUE XIA, ZHAOCHONG WU, XIJUN LIU, XIA XUE
Принадлежит:

The invention discloses an automatic control method of an injecting wax machine, which adopts a programmable logic controller as a main controller. The programmable logic controller is connected with a parameter input and a display device, a plurality of approach switches and an A/D conversion device for converting a digital quantity to an analog quantity as well as for controlling the output of the analog quantity of temperature and pressure, etc. The main controller is connected with a hydraulic valve for controlling a plurality of mechanical actions of the system. The invention is characterized by high intellectualization, wax injection pressure, momentarily adjustable temperature, as well as a plurality of parameters set and displayed by a human-machine interface. The invention also is characterized by being self-analyzed, alarming and statistical functions, controlling the input/output of switching signal, input/output of the analog quantity and effectively produce qualified wax molds ...

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Номер записи: 3