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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 10. Отображено 10.

24-06-2015 дата публикации

Method for manufacturing seamless pipeline pipe from low-carbon martensite pulp conveying wear-resistant seamless pipeline steel

Номер: CN104726790A

Автор: CAO JINRONG, XIAO GONGYE, ZHANG BAOHUI, HE BIAO, XU LEILEI, ZHAO QINGQUAN, WANG GUOLIANG, ZHANG JUNPING, WANG FENGCHAN, GUO HUOXING, MAO SHUANG, CHEN JIANWEI

Принадлежит:

The invention provides a method for manufacturing a seamless pipeline pipe from low-carbon martensite pulp conveying wear-resistant seamless pipeline steel. The method comprises the following steps: performing steelmaking, namely preparing the low-carbon martensite pulp conveying wear-resistant seamless pipeline steel according to a weight ratio; smelting by adopting an electric furnace or a converter together with an LF (ladle furnace) and a VD (vacuum degasser), wherein before tapping of the electric furnace or the converter, P is required to be less than or equal to 0.010%, then refining with the LF and VD is performed, S is ensured to be less than or equal to 0.005%, [N] is ensured to be less than or equal to 0.0080%, and [O] is ensured to be less than or equal to 0.0020% after refining, an appropriate amount of Al wires are fed at the last stage of the LF, then Fe-Ti wires and Si-Ca wires are fed, and B wires or Fe-B wires are fed before VD vacuum treatment; performing continuous casting ...

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Номер записи: 1

04-03-2015 дата публикации

Piercing and hot rolling production method for P92 ferrite heat-resistant seamless steel pipe

Номер: CN104384191A

Автор: LIU YUAN, XU LEILEI, ZHAO QINGQUAN, HE BIAO, WANG GUOLIANG, XIAO GONGYE

Принадлежит:

The invention provides a piercing and hot rolling production method for a P92 ferrite heat-resistant seamless steel pipe. The method is a method for producing the P92 seamless steel pipe by adopting a piercing machine through oblique rolling and piercing. In the method, the content of delta ferrite in the P92 seamless steel pipe is controlled to be no more than 3 percent, Cr equivalent needs to be controlled to be 8.6-8.95, the outer diameter of the rolling roller of the piercing machine is 150mm, the circumferential speed of the rolling roller of the piercing machine is controlled to be between 5.2m/s and 5.4m/s, the diameter of a piercing plug is 356mm, the reduction ratio after a steel blank is primarily bitten is 6.2-6.6 percent and the piercing biting angle is 11 degrees. A five-frame continuous rolling machine is adopted for rolling, the ellipticity of the P92 steel pipe is smaller than 1 percent and the wall thickness non-uniformity is smaller than or equal to 5 percent. The effect ...

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Номер записи: 2

27-07-2011 дата публикации

Hot-rolling seamless steel pipe applicable to high temperature of 580-620 DEG C and high pressure of 24-30MPa and production method thereof

Номер: CN0101660098B

Автор: BAOHUI ZHANG, GONGYE XIAO, JIAHUA YAO, BIAO HE, GUOLIANG WANG, HONGQI CHEN, YONGLI LIU, XIQUAN YIN, GUOQIANG WU, QINGQUAN ZHAO, JUNPING ZHANG, ZHANG BAOHUI, XIAO GONGYE, YAO JIAHUA, HE BIAO, WANG GUOLIANG, CHEN HONGQI, LIU YONGLI, YIN XIQUAN, WU GUOQIANG, ZHAO QINGQUAN, ZHANG JUNPING

Принадлежит:

The invention provides a hot-rolling seamless steel pipe applicable to high temperature of 580-620 DEG C and high pressure of 24-30MPa and a production method thereof. The steel pipe comprises the components by weight percentage of 0.08-0.12% of C, 0.20-0.50% of Si, 0.30-0.60% of Mn, 0-0.020% of P, 0-0.010% of S, 0-0.40% of Ni, 8.00-9.50% of Cr, 0.85-1.05% of Mo, 0-0.20% of Cu, 0-0.015% of Al, 0.18-0.25% of V, 0.06-0.10% of Nb, 0.030-0.070% of N and the balance of Fe. Simultaneously, the invention also provides the production method for producing the hot-rolling seamless steel pipe. The steelpipe and the production method have the effects that the performance of the steel pipe completely meets the requirement of ASME SA-335M standard on the tension and hardness and meets the requirement of GB5310 on impacting and duration strength, the steel pipe has excellent high-temperature performance, is applicable to the high-temperature bearing parts such as a steam pipeline, a connecting box and ...

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Номер записи: 3

21-09-2011 дата публикации

Seamless steel tube for petroleum cracking and heat treatment method thereof

Номер: CN0102191437A

Автор: BAOHUI ZHANG, GONGYE XIAO, JIAHUA YAO, BIAO HE, GUOLIANG WANG, QINGQUAN ZHAO, JUNPING ZHANG, JINRONG CAO, XIQUAN YIN, HAIQUAN LIANG, GUOQIANG WU, ZHANG BAOHUI, XIAO GONGYE, YAO JIAHUA, HE BIAO, WANG GUOLIANG, ZHAO QINGQUAN, ZHANG JUNPING, CAO JINRONG, YIN XIQUAN, LIANG HAIQUAN, WU GUOQIANG

Принадлежит:

The invention provides a seamless steel tube for petroleum cracking. The steel tube comprises the following components in percentage by weight: 0.08 to 0.15 percent of C, 0.20 to 0.50 percent of Si, 0.30 to 0.60 percent of Mn, less than or equal to 0.020 percent of P, less than or equal to 0.020 percent of S, less than or equal to 0.20 percent of Ni, 4.00 to 6.00 percent of Cr, 0.40 to 0.55 percent of Mo, less than or equal to 0.20 percent of Cu, less than or equal to 0.015 percent of Al, less than or equal to 0.08 percent of V, less than or equal to 0.01 percent of Nb, less than or equal to 0.008 percent of N, and the balance of Fe. The invention also provides a normalizing and tempering heat treatment process for producing the seamless steel tube. The invention has the advantages that: the steel tube is subjected to heat treatment by strictly controlling chemical compositions and adopting a heat treatment system beyond a GB9948 standard, various properties of the steel tube which issubjected ...

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Номер записи: 4

Номер: CN104294166A

Автор: XIAO GONGYE, HE BIAO, ZHANG JUNPING, ZHAO QINGQUAN, XU LEILEI

Принадлежит:

The invention provides a chromium-nickel microalloyed carbon steel nuclear seamless steel tube. The steel tube is prepared from the following components in percentage by weight: 0.16-0.20 percent of C, 0.17-0.25 percent of Si, 0.35-0.50 percent of Mn, 0.15-0.30 percent of Cr, 0.06-0.12 percent of Ni, and the balance of Fe, while the amount of P, S, Al, Mo and Cu serving as residual elements in steel is controlled according to standard. The invention further provides a method for producing the hot-rolled seamless steel tube. The steel tube has the effects that by means of microalloying, the flow accelerated corrosion resistance rate of the carbon steel tube can be reduced by about 45 percent, the transverse low-temperature average impact energy of steel at -20 DEG C is improved by about 250 percent and reaches about 80J on average, the service life of the steel tube can be prolonged, the changing frequency of the steel tube can be reduced, and the power generation efficiency of a nuclear ...

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Номер записи: 10