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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 3. Отображено 3.
08-08-2023 дата публикации

Manufacturing method of X80 steel longitudinal welded pipe capable of resisting softening of weld joint heat affected zone

Номер: CN116555685A
Автор: FENG QINGSHAN, DAI LIANSHUANG, WANG TING, CUI SHAOHUA, WANG YE, LI ZENGCAI, SHA SHENGYI, YU YAO, ZHA JIDONG
Принадлежит:

The invention relates to a manufacturing method of an X80 steel longitudinal welded pipe capable of resisting softening of a weld joint heat affected zone, and belongs to the technical field of longitudinal welded pipe manufacturing. The invention relates to a manufacturing method of an X80 steel straight welded pipe capable of resisting softening of a weld joint heat affected zone, the raw material of the welded pipe adopts pure molten steel, the welded pipe comprises the following chemical components: 0.060-0.070% of C, 0.25-0.30% of Si, 1.50-1.60% of Mn, less than or equal to 0.005% of P, less than or equal to 0.005% of S, 0.15-0.25% of Ni, 0.20-0.30% of Cr, 0.10-0.20% of Mo, 0.030-0.075% of Nb, 0.030-0.065% of V, 0.020-0.030% of Ti, less than or equal to 0.20% of Pcm, 0.39-0.44% of IIW and the balance of Fe element, and the processing procedure comprises the steps of converter smelting, continuous casting, plate blank heating, controlled rolling and controlled cooling, high The method ...

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Номер записи: 1
28-07-2023 дата публикации

Rare earth metal-containing powder core flux-cored wire for X80 pipeline steel

Номер: CN116493806A
Автор: DAI LIANSHUANG, FENG QINGSHAN, LI CHENGNING, WANG TING, YU YAO, ZHA JIDONG, LI DINAN, WANG DONGPENG, WANG YE, WANG JINGSONG, DI XINJIE, WANG DONGPO
Принадлежит:

The invention relates to a rare earth metal-containing powder core flux-cored wire for X80 pipeline steel, and belongs to the technical field of flux-cored wires for gas shielding. The rare earth metal-containing powder core flux-cored wire for the X80 pipeline steel is composed of a carbon steel strip and a metal powder core, and the metal powder core is composed of the following raw materials of, by weight, 10-15% of medium carbon ferromanganese, 10-15% of nickel powder, 4-8% of 75 ferrosilicon, 4-6% of ferromolybdenum, 1-3% of ferrotitanium, 2-5% of yttrium oxide, 1-3% of aluminum magnesium alloy and the balance iron powder. The welding wire has the beneficial effects that the Si-Mn-Mo-Ni alloy system welding wire is adopted, the welding wire can be suitable for backing welding, filling welding and cosmetic welding of X80 low-alloy high-strength steel, splashing is basically avoided during welding, all-position welding can be achieved, the low-temperature toughness is good, and the diffusible ...

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Номер записи: 2
15-08-2023 дата публикации

Manufacturing method of X80 steel pipe with good low-temperature toughness in girth welding heat affected zone

Номер: CN116590629A
Автор: DAI LIANSHUANG, FENG QINGSHAN, WANG TING, CUI SHAOHUA, WANG YE, YU YAO, JIANG XITONG, ZHA JIDONG
Принадлежит:

The invention relates to a manufacturing method of an X80 steel pipe with good low-temperature toughness in a girth welding heat affected zone, and belongs to the technical field of spiral welded pipe manufacturing. According to the manufacturing method of the X80 steel pipe with the good low-temperature toughness in the girth welding heat affected zone, pure molten steel is adopted as a raw material of a welded pipe, the welded pipe comprises the chemical components of 0.040%-0.050% of C, 0.20%-0.25% of Si, 1.78%-1.80% of Mn, smaller than or equal to 0.0050% of P, smaller than or equal to 0.0050% of S, 0.10%-0.20% of Ni, 0.20%-0.30% of Cr, 0.20%-0.25% of MO, 0.034%-0.056% of Nb, 0.035%-0.056% of V, 0.010%-0.025% of Ti, smaller than or equal to 0.20% of Pcm, 0.42%-0.48% of IIW and the balance Fe, and the manufacturing procedures of the X80 steel pipe comprise converter The method has the beneficial effects that the microscopic structure of a welding heat affected zone can keep good low-temperature ...

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Номер записи: 3