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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 7. Отображено 7.
23-06-2023 дата публикации

Welding laser visual image segmentation method, electronic equipment and storage medium

Номер: CN116275388A
Автор: YANG BIAO, TAN CAIWANG, WU LAIJUN, CHEN BO, SONG XIAOGUO, WANG DONG
Принадлежит:

The invention provides a welding laser visual image segmentation method, and belongs to the technical field of image segmentation. Comprising the following steps: S1, acquiring a laser stripe image by using a laser vision system, and preprocessing the laser stripe image; s2, building a neural network for laser visual image segmentation; s3, training the laser vision segmentation neural network, inputting the processed laser stripe image into the laser vision image segmentation neural network, and outputting a grayscale image with a grayscale value range of 0-255; and S4, training the neural network by using a back propagation algorithm, inputting the laser stripe image into the neural network for laser visual image segmentation, and outputting a segmentation result. The technical problems that in the prior art, a traditional image processing algorithm is poor in anti-interference capacity, and welding seam tracking errors are large under the interference conditions of welding reflection ...

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Номер записи: 1
23-06-2023 дата публикации

Wire filling device and method for sealing surface micropores of thin-wall hollow metal ball

Номер: CN116275735A
Автор: TAN CAIWANG, LIU YUHANG, YANG BIAO, DONG YANG, LIU FUYUN, WU LAIJUN, CHEN BO, SONG XIAOGUO
Принадлежит:

The invention relates to a wire filling device and method for sealing micropores in the surface of a thin-wall hollow metal ball, and belongs to the technical field of material processing automation. The problem that it is difficult to fill welding wires into micropores is solved. Comprising a welding stud conveying device, a welding stud filling device and a shell, the welding stud conveying device and the welding stud filling device are installed on the shell, the welding stud conveying device is located above the welding stud filling device, the welding stud conveying device is used for conveying welding studs to the position above the welding stud filling device, and the welding stud filling device is used for filling the welding studs into a to-be-welded part. The wire filling device is used for the wire filling process of sealing the micropores in the surface of the thin-wall hollow metal ball, the wire filling task of sealing the micropores in the surface of the thin-wall hollow ...

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Номер записи: 2
18-04-2023 дата публикации

Functional Schiff base high-molecular polymer as well as preparation method and application thereof

Номер: CN115975087A
Автор: TAN CAIWANG, SU JIANHUI, WANG XINBO, SONG XIAOGUO, CHEN BO, DONG PENGFEI
Принадлежит:

The invention relates to a functional Schiff base high-molecular polymer as well as a preparation method and application thereof, and belongs to the technical field of metal/thermoplastic composite material thermal connection interface regulation and control. In order to solve the problem that an existing regulation and control method is poor in interface connection strength improvement effect, the invention provides a preparation method of a functional Schiff base high-molecular polymer, and the preparation method comprises the following steps: dropwise adding a methacryloyl chloride solution into a vanillin solution, and stirring at room temperature to obtain vanillyl methacrylate aldehyde; dissolving vanillyl methacrylate in an ethyl acetate solution, adding azodiisobutyronitrile, and stirring to obtain polyvanillyl methacrylate; adding ethyl 4-aminobenzoate into the poly (vanillin methacrylate), and stirring to obtain a functional Schiff base high-molecular polymer; the method is applied ...

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Номер записи: 3
15-06-2011 дата публикации

Laser offset welding method suitable for magnesium/steel and magnesium/titanium

Номер: CN0102091872A
Автор: LIQUN LI, CAIWANG TAN, FUQUAN LI, ZHENGLONG LEI, LI LIQUN, TAN CAIWANG, LI FUQUAN, LEI ZHENGLONG
Принадлежит:

The invention relates to a welding method for dissimilar metals, and in particular relates to a laser offset welding method suitable for magnesium/steel and magnesium/titanium. The method comprises the following steps: (1) fixing to-be-welded magnesium and steel or magnesium and titanium on a work table, and jointing by use of zero-gap seamless joints; and (2) achieving the welding by irradiating steel or titanium with laser under the conditions of filling welding wire or not, wherein the protection gas flow rate is1 L/min to 50 L/min, the welding speed is 0.1 m/min to 1 m/min, the laser power is 1 W to 10 kW, and the laser offset 0.1 mm to 0.8 mm. The high-melting-point side material can be molten by irradiating with the laser beam, and the low-melting-point side material can be molten through heat conduction so as to achieve the connection between the two kinds of materials. When a laser beam directly irradiates a high-reflectivity material, such as a magnesium alloy, the material has ...

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Номер записи: 4
11-08-2023 дата публикации

Welding clamp and method for TiNi shape memory alloy wire and stainless steel wire

Номер: CN116571881A
Автор: TAN CAIWANG, LI HAOYUE, JIANG TAO, LIU FUYUN, SONG XIAOGUO
Принадлежит:

The invention discloses a welding clamp and method for a TiNi shape memory alloy wire and a stainless steel wire, belongs to the technical field of dissimilar material connection, and aims to solve the problem that a welding joint of the TiNi shape memory alloy wire and the stainless steel wire is poor in mechanical property. Comprising chucks and a sliding base, the two chucks are coaxially and oppositely arranged on a base in a rotating mode, a lifting platform is arranged between the two chucks, a front clamping plate and a rear clamping plate are arranged on the lifting platform in a front-back sliding mode, during welding, a connecting piece is fixed, and a memory alloy wire and a stainless steel wire are fixed through the chucks on the same side respectively. And the hot melting connecting piece is welded with the memory alloy wire and the stainless steel wire through laser welding. The problem that the welding area of the memory alloy wire and the stainless steel wire is limited ...

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Номер записи: 5
07-04-2023 дата публикации

GH3230 alloy powder, preparation method of GH3230 alloy powder and preparation method of laser powder bed molten GH3230 alloy component

Номер: CN115927916A
Автор: LIN DANYANG, XI XIN, LI ZIHAN, MA RUI, SONG XIAOGUO, SHI ZHIFENG, HU JIXU, TAN CAIWANG, DONG ZHIBO
Принадлежит:

The invention relates to GH3230 alloy powder, a preparation method of the GH3230 alloy powder and a preparation method of a laser powder bed melting GH3230 alloy component, and belongs to the technical field of high-temperature alloy. In order to solve the problem that the performance of a laser powder bed melting GH3230 alloy component for a combustion chamber serving at the temperature of 1000 DEG C or above is affected by cracks, GH3230 alloy powder is prepared through gas atomization and is used for preparing the laser powder bed melting GH3230 alloy component. According to the method, the element content change is reasonably controlled within the standard GH3230 alloy component range, so that the inherent performance of the GH3230 alloy does not change, but the grain growth direction of the deposited GH3230 alloy is changed, the texture strength is reduced, the grain boundary residual strain is relieved, the solidification temperature interval of the laser powder bed molten GH3230 ...

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Номер записи: 6
15-08-2023 дата публикации

Device and method for coordinating deformation stress of thick plate aluminum alloy based on LAHW

Номер: CN116586795A
Автор: TAN ZHUOMING, YU TAO, ZHANG ZHAO, GAO PEIXIN, QIN XUDONG, TAN CAIWANG, LIU FUYUN, ZHOU XIAOHUI, ZHOU MINGQI
Принадлежит:

The invention discloses a thick plate aluminum alloy coordination deformation stress device and method based on LAHW, and belongs to the technical field of welding. A plurality of cooling holes and a plurality of bottom plate water-cooling through holes communicating with the cooling holes are formed in a water-cooling clamp bottom plate; the first water cooling plate is clamped above the thick plate aluminum alloy, and a plurality of first water cooling through holes are formed in the first water cooling plate; the second water-cooling plates are clamped on the two sides of the thick plate aluminum alloy, and a plurality of second water-cooling through holes are formed in the outer sides of the second water-cooling plates; the clamping support is installed on the water-cooling clamp bottom plate and used for fastening the thick plate aluminum alloy and the second water-cooling plate, and the clamping plate is installed on the clamping support. A pressure sensor and a pressure head which ...

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Номер записи: 7