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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 7. Отображено 7.
11-01-2012 дата публикации

Method for rapidly determining buckling strain capability of steel tube

Номер: CN0101923021B
Автор: JI LINGKANG, CHEN HONGYUAN, LI WEIWEI, GONG SHAOTAO, LINGKANG JI, HONGYUAN CHEN, WEIWEI LI, SHAOTAO GONG
Принадлежит:

The invention provides a method for rapidly determining the buckling strain capability of a steel tube, belonging to the production control technical field of the high-deformability steel tube for a petroleum and gas pipeline. The method comprises the following steps: taking a longitudinal test piece from the tube, and then obtaining an engineering stress-engineering strain curve by a test; and calculating the critical buckling strain of the steel tube in a bending deformation mode according to a formula: epsiloncrit=15.963*Rt2.0/Rt1.0-15.139, wherein, the critical buckling strain is average strain that a compression side of the test piece stretches towards two sides over a distance which is twice as long as the external diameter length of the steel tube with a buckled position as a center. The method can help rapidly determine the critical buckling strain of the steel tube in the bending deformation mode by controlling the tensile property of the pipeline steel tube, and can carry out ...

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Номер записи: 1
09-02-2011 дата публикации

Nickel-based interlayer material suitable for instantaneous liquid phase diffusion welding

Номер: CN0101966629A
Автор: GONG SHAOTAO, LI WEIWEI, JI LINGKANG, XU JINFENG, TONG DOUXI, SHAOTAO GONG, WEIWEI LI, LINGKANG JI, JINFENG XU, DOUXI TONG
Принадлежит:

The invention discloses a nickel-based interlayer material suitable for instantaneous liquid phase diffusion welding. The material is characterized by comprising the following chemical elements in percentage by weight: 4.3 to 7 percent of Si, 3 to 8 percent B and the balance of nickel. The melting point temperature of a quickly solidified Ni-B-Si alloy foil belt with thickness of 30 microns is 950 to 1,050 DEG C; the material is suitable for instantaneous liquid phase diffusion welding among low-alloy steel, stainless steel and low-alloy steel/ stainless steel composite materials, has high strength of seams and heat affected zones, good toughness and wide application, and is simple and convenient to manufacture; and the tensile strength Rm is 620MPa, the bent shaft diameter D is 6t, and no crack is produced when bending 180 degrees.

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Номер записи: 2
23-05-2012 дата публикации

Method for manufacturing high-strength X100 steel grade spiral seam submerged arc welded pipe

Номер: CN0101797600B
Автор: GONG SHAOTAO, HAN XIULIN, HUANG JIAN, LI JIANYI, LI YANFENG, LI YANG, LI YONGDONG, LIU JIANHUI, SHEN LIQUN, WANG HAISHENG, WANG QINGGUO, ZHANG WEIWEI, ZHANG YONGQING, ZHAO DI, ZHENG ZHONG, SHAOTAO GONG, XIULIN HAN, JIAN HUANG, JIANYI LI, YANFENG LI, YANG LI, YONGDONG LI, JIANHUI LIU, LIQUN SHEN, HAISHENG WANG, QINGGUO WANG, WEIWEI ZHANG, YONGQING ZHANG, DI ZHAO, ZHONG ZHENG
Принадлежит:

The invention discloses a method for manufacturing a high-strength X100 steel grade spiral seam submerged arc welded pipe. The method comprises the following steps: uncoiling, flattening, edge milling, pre-springing, molding, inside welding, outside welding, pipe end belling, base metal layering ultrasonic examination, weld seam X ray inspection, hydrostatic test, weld seam ultrasonic inspection,pipe end chamfering and finished product inspection. In the technical steps of the preparation method, double edge milling process, pre-springing process and pipe end belling process are added so as to successfully solve the technical problems that the high-strength X100 steel grade spiral seam submerged arc welded pipe has poor molding stability, the welding joint performance cannot meet technical requirement and the like.

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Номер записи: 3
22-12-2010 дата публикации

Method for rapidly determining buckling strain capability of steel tube

Номер: CN0101923021A
Автор: JI LINGKANG, CHEN HONGYUAN, LI WEIWEI, GONG SHAOTAO, LINGKANG JI, HONGYUAN CHEN, WEIWEI LI, SHAOTAO GONG
Принадлежит:

The invention provides a method for rapidly determining the buckling strain capability of a steel tube, belonging to the production control technical field of the high-deformability steel tube for a petroleum and gas pipeline. The method comprises the following steps: taking a longitudinal test piece from the tube, and then obtaining an engineering stress-engineering strain curve by a test; and calculating the critical buckling strain of the steel tube in a bending deformation mode according to a formula: epsiloncrit=15.963*Rt2.0/Rt1.0-15.139, wherein, the critical buckling strain is average strain that a compression side of the test piece stretches towards two sides over a distance which is twice as long as the external diameter length of the steel tube with a buckled position as a center. The method can help rapidly determine the critical buckling strain of the steel tube in the bending deformation mode by controlling the tensile property of the pipeline steel tube, and can carry out ...

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Номер записи: 4
17-11-2010 дата публикации

Method for manufacturing high-strength X90 steel grade spiral submerged arc welded pipe

Номер: CN0101886222A
Автор: YANFENG LI, LIQUN SHEN, LINGKANG JI, PENG TIAN, SHAOTAO GONG, XIAODONG ZHANG, YANG LI, JIANYI LI, WEIWEI ZHANG, LI YANFENG, SHEN LIQUN, JI LINGKANG, TIAN PENG, GONG SHAOTAO, ZHANG XIAODONG, LI YANG, LI JIANYI, ZHANG WEIWEI
Принадлежит:

The invention discloses a method for manufacturing a high-strength X90 steel grade spiral submerged arc welded pipe. The method comprises the following steps of: uncoiling; leveling; edge milling; pre-springing; forming; inside welding; outside welding; pipe end diameter expansion; layering and ultrasonic examination of a base material; X-ray examination of a welding seam; hydrostatic test; ultrasonic examination of the welding seam; and pipe end chamfering. By increasing the processes of double edge milling, edge pre-springing and pipe end diameter expansion in the processing steps, the manufacturing method successfully solves the technical problems of poor forming stability, the difficulty for the performance of the welded joint to meet the technical requirement and the like during the manufacturing of the high-strength X90 steel grade spiral submerged arc welded pipe.

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Номер записи: 5
11-07-2012 дата публикации

Method for manufacturing high-strength X90 steel grade spiral submerged arc welded pipe

Номер: CN0101886222B
Автор: LI YANFENG, SHEN LIQUN, JI LINGKANG, TIAN PENG, GONG SHAOTAO, ZHANG XIAODONG, LI YANG, LI JIANYI, ZHANG WEIWEI, YANFENG LI, LIQUN SHEN, LINGKANG JI, PENG TIAN, SHAOTAO GONG, XIAODONG ZHANG, YANG LI, JIANYI LI, WEIWEI ZHANG
Принадлежит:

The invention discloses a method for manufacturing a high-strength X90 steel grade spiral submerged arc welded pipe. The method comprises the following steps of: uncoiling; leveling; edge milling; pre-springing; forming; inside welding; outside welding; pipe end diameter expansion; layering and ultrasonic examination of a base material; X-ray examination of a welding seam; hydrostatic test; ultrasonic examination of the welding seam; and pipe end chamfering. By increasing the processes of double edge milling, edge pre-springing and pipe end diameter expansion in the processing steps, the manufacturing method successfully solves the technical problems of poor forming stability, the difficulty for the performance of the welded joint to meet the technical requirement and the like during the manufacturing of the high-strength X90 steel grade spiral submerged arc welded pipe.

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Номер записи: 6
11-08-2010 дата публикации

Method for manufacturing high-strength X100 steel grade spiral seam submerged arc welded pipe

Номер: CN0101797600A
Автор: GONG SHAOTAO, HAN XIULIN, HUANG JIAN, LI JIANYI, LI YANFENG, LI YANG, LI YONGDONG, LIU JIANHUI, SHEN LIQUN, WANG HAISHENG, WANG QINGGUO, ZHANG WEIWEI, ZHANG YONGQING, ZHAO DI, ZHENG ZHONG, SHAOTAO GONG, XIULIN HAN, JIAN HUANG, JIANYI LI, YANFENG LI, YANG LI, YONGDONG LI, JIANHUI LIU, LIQUN SHEN, HAISHENG WANG, QINGGUO WANG, WEIWEI ZHANG, YONGQING ZHANG, DI ZHAO, ZHONG ZHENG
Принадлежит:

The invention discloses a method for manufacturing a high-strength X100 steel grade spiral seam submerged arc welded pipe. The method comprises the following steps: uncoiling, flattening, edge milling, pre-springing, molding, inside welding, outside welding, pipe end belling, base metal layering ultrasonic examination, weld seam X ray inspection, hydrostatic test, weld seam ultrasonic inspection, pipe end chamfering and finished product inspection. In the technical steps of the preparation method, double edge milling process, pre-springing process and pipe end belling process are added so as to successfully solve the technical problems that the high-strength X100 steel grade spiral seam submerged arc welded pipe has poor molding stability, the welding joint performance cannot meet technical requirement and the like.

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Номер записи: 7