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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 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 6. Отображено 6.
04-04-2023 дата публикации

Preparation method and application of GH2132 alloy bar

Номер: CN115896419A
Автор: LI XUGANG, LUAN JIZHE, LI AIMIN, SHEN MINGMING, LIU JIAPENG, HAN SHOUYE, LIANG ZENGSHUAI, SONG TIANYI
Принадлежит:

The invention relates to the technical field of alloy steel, in particular to a preparation method and application of a GH2132 alloy bar. The preparation method comprises the following steps: forging, hot-rolling and cogging a steel ingot to obtain a blank; the blank is softened and annealed twice, cold drawing is conducted with the deformation of 15%-25% after each time of softening and annealing, and a semi-finished product is obtained; and after solution treatment is conducted on the semi-finished product, the semi-finished product is subjected to cold drawing with the deformation of 10%-15% to obtain a finished product, and the GH2132 alloy bar is obtained. According to the method, the blank is softened and annealed twice, so that the cold deformation resistance in the cold drawing process is reduced; performing cold drawing with the deformation of 15-25% to obtain a semi-finished product with higher strength and proper cold deformation resistance; the method comprises the following ...

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Номер записи: 1
14-04-2023 дата публикации

Precipitation hardening type stainless steel as well as preparation method and application thereof

Номер: CN115961218A
Автор: SUN HAITAO, LUAN JIZHE, WANG SHOUMING, ZHONG QINGYUAN, SHI YONGXIN
Принадлежит:

The invention relates to the technical field of stainless steel materials, in particular to precipitation hardening type stainless steel and a preparation method and application thereof. The precipitation hardening type stainless steel comprises the following components in percentage by mass: 11.00%-12.00% of Ni, 9.50%-11.00% of Cr, 1.30%-1.60% of Mo, 1.80%-2.00% of Ti, 0.01%-0.04% of Al, less than or equal to 0.005% of C, less than or equal to 0.05% of Mn, less than or equal to 0.05% of Si, less than or equal to 0.002% of S, less than or equal to 0.005% of P, less than or equal to 0.0001% of H, less than or equal to 0.0010% of O, less than or equal to 0.0010% of N and the balance of Fe and other inevitable impurities. According to the precipitation hardening type stainless steel, by optimizing raw materials, the content of impurity elements in the steel is reduced, the purity of the steel is improved, and the crack sensitivity of the steel is improved; by adjusting the chemical components ...

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Номер записи: 2
18-07-2023 дата публикации

Ultra-pure austenitic stainless steel and preparation method thereof

Номер: CN116445828A
Автор: LI QING, WANG SHOUMING, LUAN JIZHE, YE QIANG, SHI YONGXIN, ZHONG QINGYUAN
Принадлежит:

The invention relates to the technical field of metallurgy, and particularly discloses ultra-pure austenitic stainless steel and a preparation method thereof. The ultra-pure austenitic stainless steel comprises, by weight, less than or equal to 0.007% of C, less than or equal to 0.05% of Mn, less than or equal to 0.30% of Si, less than or equal to 0.002% of S, less than or equal to 0.01% of P, 14.5%-15.0% of Ni, 16.5%-17.0% of Cr, 2.20%-2.50% of Mo, less than or equal to 0.01% of Al, less than or equal to 0.0002% of H, less than or equal to 0.0015% of O, less than or equal to 0.015% of N, less than or equal to 0.10% of Cu and the balance Fe and inevitable impurities. According to the austenitic stainless steel, the alloy components are designed, all the components are reasonably proportioned, Mo, Ni and Cr elements are synergistic, the corrosion resistance of the austenitic stainless steel can be remarkably improved, and due to the proper Cr/Ni/Mo proportion, formation of ferrite can be ...

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Номер записи: 3
04-08-2023 дата публикации

Hot work die steel SD400 and preparation method thereof

Номер: CN116536581A
Автор: ZHONG QINGYUAN, LUAN JIZHE, YE QIANG, LI QING, SHI YONGXIN, SUN HAITAO, WANG KAI, FENG WENJING, WEI XIN, CAO LUMING
Принадлежит:

The invention belongs to the technical field of metallurgy, and particularly discloses hot work die steel SD400 and a preparation method thereof. The high-strength steel comprises the following components in percentage by weight: 0.35%-0.40% of C, 0.20%-0.50% of Si, 0.30%-0.80% of Mn, less than or equal to 0.015% of P, less than or equal to 0.005% of S, 4.80%-5.40% of Cr, 1.80%-2.40% of Mo, 0.60%-1.00% of V, 0.30%-0.60% of Ni, 0.30%-0.60% of Co and the balance of iron and inevitable impurities. The die steel SD400 provided by the invention has relatively high transverse unnotched impact property and hardness, has excellent banded segregation structures and excellent grain size, and solves the problems of poor hardenability, relatively poor banded structures and microscopic structures, poor transverse unnotched impact property and the like of large-module die steel.

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Номер записи: 4
25-07-2023 дата публикации

Tm/Ho: YAG-SiO2 special optical fiber, 2-micron single-frequency optical fiber laser based on optical fiber and preparation method of Tm/Ho: YAG-SiO2 special optical fiber

Номер: CN116482797A
Автор: LI HAIYAN, LUAN JIZHE, CONG ZHENHUA, LIU ZHAOJUN, ZHAO ZHIGANG
Принадлежит:

The invention relates to a Tm/Ho: YAG-SiO2 special optical fiber, a 2-micron single-frequency optical fiber laser based on the optical fiber and a preparation method of the Tm/Ho: YAG-SiO2 special optical fiber, and belongs to the field of optical fiber lasers. The fiber core of the special optical fiber is Tm/Ho: YAG, the outer cladding is SiO2, and the laser comprises a pumping source, an optical fiber wavelength division multiplexer A and a laser resonant cavity which are arranged along an optical path; the pumping source adopts a semiconductor LD (laser diode), the laser resonant cavity consists of a pair of fiber bragg gratings including a low-reflectivity bragg grating and a high-reflectivity bragg grating, and the special optical fiber is arranged between the low-reflectivity bragg grating and the high-reflectivity bragg grating. The absorption capacity of the gain optical fiber to the pump and the gain of the gain optical fiber in the 2-micron wave band are improved through the ...

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Номер записи: 5
02-02-2011 дата публикации

Permeable adjustable inflatable mattress

Номер: CN0101961179A
Автор: JIZHE LUAN, LUAN JIZHE
Принадлежит:

The invention discloses a permeable adjustable inflatable mattress, which comprises at least two permeable adjustable main airbags and an electric inflation/deflation pump. The permeable adjustable main airbag at least consists of three or more permeable adjustable air chambers (on the head, the waist and the legs) which are isolated from one another. Each permeable adjustable air chamber is at least provided with an air nozzle and linked to the electric inflation/deflation pump through an air tube and is capable of adjusting the pressure therein, the height and the hardness thereof through independent inflation or deflation. By employing the structure, the mattress can be independently adjusted according to the height and air pressure required by head, waist, legs or the like during sleeping to comfort all parts.

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Номер записи: 6