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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 5. Отображено 5.
09-11-2011 дата публикации

Production process of large-caliber straight-slit submerged-arc welding steel pipe

Номер: CN0102233510A
Автор: YUXING MA, MA YUXING
Принадлежит:

The invention relates to a production process of a large-caliber straight-slit submerged-arc welding steel pipe. The production process comprises the following steps of: (1) ultrasonic flaw detection of a plate; (2) flame cutting and blanking; (3) edge milling; (4) prebending; (5) forming; (6) stitch prewelding; (7) inside welding; (8) outside welding; (9) correction; (10) flaw detection of the steel pipe; (11) transverse motion; and (12) detection. The innovative points of the production process are as follows: the production process also comprises a grinding step of the surplus height of a welding seam, and after outer welding, a grinding machine of the surplus height of the welding seam is adopted to carry out grinding and leveling on the surplus height of the welding seam. According to the production process of the large-caliber straight-slit submerged-arc welding steel pipe, the grinding machine of the surplus height of the welding seam is adopted so as to realize the automatic grinding ...

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Номер записи: 1
18-08-2023 дата публикации

Special alkali-free high-strength fiber and preparation method thereof

Номер: CN116606075A
Автор: MA YUANHAI, TIE YOULU, MA YUXING, WANG HUAILI, LI XIAOPENG, WANG MINGLONG, LIU QIQUAN
Принадлежит:

The invention discloses a special alkali-free high-strength fiber, which is prepared from the following raw materials: limestone and minerals, and mineral powder specifically comprises pyrophyllite, kaolin, quick lime, wollastonite, quartz sand, fluorite and slag. The prepared glass fiber has excellent stability, mechanical strength, elasticity modulus, acid and alkali resistance and water resistance, and the glass fiber is low in processing melting temperature, high in melting speed and high in yield. In addition, the slag is waste slag, raw materials can be recycled, the cost is reduced, meanwhile, the glass fiber performance is improved, the cost performance is high, operability is high, and the method is suitable for being widely popularized in the fiber field.

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Номер записи: 2
23-05-2023 дата публикации

Production process of calcium hydroxide with controllable particle size and height

Номер: CN116143156A
Автор: MA YUXING, MA YUANHAI, TIE YOULU, YU YANGHUI, YAN JIANQIANG, WANG HUAILI, MA HAIFENG, HUANG LAN
Принадлежит:

The invention relates to the field of calcium hydroxide production, in particular to a production process of calcium hydroxide with a highly controllable particle size. Calcium hydroxide with high purity, highly controllable particle size and high stability is obtained through four-step treatment of calcium oxide rough preparation, filtration, lime milk preparation and drying, and the calcium hydroxide is high in activity, convenient in process, high in practical operation feasibility and suitable for batch production.

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Номер записи: 3
10-06-2015 дата публикации

Colloidal gold and light-emitting quantum dot dimer based selectable second-level sensitivity lateral chromatography rapid detection method

Номер: CN104698171A
Автор: ZHANG FENG, DUAN HAITING, WANG XIAOWEI, ZHANG JINGWEI, MA YUXING
Принадлежит:

The invention provides a colloidal gold and light-emitting quantum dot dimer based selectable second-level sensitivity lateral chromatography rapid detection method. when the requirement for the sensitivity is low, red reflection light of colloidal gold is utilized for detection under visible light; when the requirement for the sensitivity is high or colloidal gold cannot be distinguished, fluorescent light of the quantum dot is utilized for detection under an ultraviolet lamp; a nitrocellulose membrane is used as a carrier, liquid dropwise added at one end of a membrane strip is seeped and migrated to the other end of the membrane strip under the capillary action of a microporous membrane, antigen antibody combination, the color of the colloidal gold and the antigen fluorescence detection of the quantum dot are utilized; a test paper comprises a water absorption pad 1, a combination pad, a detection line, a quality control line, a water absorption pad, a bottom plate, and a nitrocellulose ...

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Номер записи: 4
28-07-2023 дата публикации

Preparation process of lime for acid-resistant alkali-free boron-free glass fiber and product

Номер: CN116496006A
Автор: MA YUANHAI, ZHANG MING, TIE YOULU, MA YUXING, HOU YIN
Принадлежит:

The invention discloses a preparation process of lime for acid-resistant alkali-free boron-free glass fibers and a product, and relates to the field of preparation of lime and compositions thereof, the preparation process comprises the following steps: mixing limestone and fuel, preheating the mixture in a kiln at a specific temperature, then continuously adding the mixture to a certain temperature, and carrying out high-temperature calcination to obtain the lime for the acid-resistant alkali-free boron-free glass fibers. And finally, cooling. The prepared limestone is high in purity, has excellent stability and activity, shows excellent suspension stability after being dissolved in water, and can remarkably improve the strength and acid resistance of the glass fiber when being applied to the acid-resistant alkali-free boron-free glass fiber.

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Номер записи: 5