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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 4. Отображено 4.
09-09-2015 дата публикации

Production method of nuclear power plant used high-temperature-resisting brittleness-resisting seamless steel tube with outer diameter of more than 508mm

Номер: CN104894485A
Автор: ZHANG JUNPING, XIAO GONGYE, HE BIAO, ZHAO QINGQUAN, WANG GUOLIANG, XU LEILEI, CAO JINRONG, QIN LIBO
Принадлежит:

The invention provides a production method of a nuclear power plant used high-temperature-resisting brittleness-resisting seamless steel tube with an outer diameter of more than 508mm. The method comprises the following steps that raw materials are prepared; the prepared raw materials of the seamless steel tube are subjected to die casting and round steel stock forging, the obtained stock is hot-rolled into a high precision semi-finished tube through the PQF three-roller retained mandrel tube rolling technology, and the semi-finished tub is hot-rolled into a finished tube through the skew-rolling spiral expanding technology. The production method has the beneficial effects that through two-time heating rolling, the needed large-diameter WB36CN1 seamless steel tube for the nuclear power station can reach the required physical dimension and precision; the produced tube is compact in texture, small in crystalline grain, excellent in low-temperature impact toughness and high-temperature strength ...

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Номер записи: 1
26-08-2015 дата публикации

Thermal treatment method of low-hardness high-alloy seamless steel tube for petrochemical engineering

Номер: CN104862603A
Автор: HE BIAO, XIAO GONGYE, WANG GUOLIANG, ZHAO QINGQUAN, XU LEILEI, ZHANG JUNPING, WANG HUA, WANG FENGCHAN, QIN LIBO
Принадлежит:

The invention provides a thermal treatment method of a low-hardness high-alloy seamless steel tube for petrochemical engineering. The method comprises steps as follows: the steel tube comprises components in percentage by weight as follows: 0.05%-0.15% of C, 0.25%-1.00% of Si, 0.30%-0.60% of Mn, 0%-0.020% of P, 0%-0.010% of S, 0%-0.20% of Ni, 8.00%-10.00% of Cr, 0.90%-1.10% of Mo, 0.005%-0.045% of Al ,0%-0.20% of Cu, 0%-0.20% of V, 0%-0.02% of Nb and the balance of Fe. The yield strength of the seamless steel tube after thermal treatment is higher than or equal to 205 MPa at the normal temperature, the tensile strength is larger than or equal to 415 MPa, and the hardness is smaller than or equal to 210 HBW. The thermal treatment method has the effects that the hardness value of a finished tube can be reduced to about 200 HBW to meet the requirement of a user; the production efficiency is improved, thermal treatment of a batch of steel tubes takes 5 hours at most with the method instead ...

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Номер записи: 2
06-08-2014 дата публикации

Method for synthesizing phosphotungstic acid-titanium dioxide composite spherical nanometer material by one-step sol-gel method

Номер: CN103962185A
Автор: ZHOU YUNSHAN, LEI HUAN, ZHANG LIJUAN, QIN LIBO
Принадлежит:

The invention discloses a method for synthesizing a phosphotungstic acid-titanium dioxide composite spherical nanometer material by a one-step sol-gel method and belongs to the technical field of preparation of functional nanometer materials. The method avoids complex experimental steps and high energy consumption of solvent-induced self-assembly and hydrothermal methods and greatly simplifies the experimental flow. The shape and size of the prepared phosphotungstic acid-titanium dioxide composite spherical nanometer material are controllable. The material with the spherical-like nanometer structure has high sulphur removal efficiency and is applied to a sulphur removal reaction by extraction combined with catalytic oxidation. DBT simulated oil with sulphur content being 350ppm can be degraded to reach the sulphur content of 4.8ppm by 70mg of catalyst within 2h. The novel preparation method of the nanometer catalyst is simple, has the characteristics of good thermal stability, less energy ...

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Номер записи: 3
21-07-2023 дата публикации

Multi-point leveling control method

Номер: CN116461470A
Автор: ZHAO LEILEI, SHI HUANLING, GU YAFEI, HU RUINAN, QIN LIBO
Принадлежит:

The invention discloses a multi-point leveling control method. In the field of weapon equipment manufacturing or aircraft manufacturing, in order to meet the requirement for rapid transfer of components, the mode of transferring through a mobile robot is used for replacing original hoisting transferring. Due to the influence of terrains and multi-point stations, the mobile robot needs to be lifted and leveled after movement is completed. For example, in the large spacecraft cabin butt joint process and the aircraft trailing edge wing surface drilling process, an electric supporting mechanism on the robot needs to be used for lifting a vehicle body to the designated height and leveling the vehicle body, and the state of the vehicle body meets the requirements of subsequent procedures. An existing leveling mode mostly limits the installation posture of a tilt angle sensor to be consistent with the coordinates of a supporting plane, limits the position coordinates of supporting points and ...

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Номер записи: 4