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172 条记录 (耗时 0.012 秒)

    Cr-Mo steel pipe and welding method thereof
    81.
    发明授权
    Cr-Mo steel pipe and welding method thereof 失效
    Cr-Mo钢管及其焊接方法

    公开(公告)号：US5350561A

    公开(公告)日：1994-09-27

    申请号：US36945

    申请日：1993-03-25

    申请人： Toshihiro Takamura ,  Yukio Nishino ,  Motoaki Oyama ,  Akiyoshi Matsushita

    发明人： Toshihiro Takamura ,  Yukio Nishino ,  Motoaki Oyama ,  Akiyoshi Matsushita

    IPC分类号： B23K9/23 ,  C22C38/00 ,  C22C38/22 ,  C22C38/12 ,  C22C38/06

    CPC分类号： C22C38/22 ,  Y10S148/909

    摘要： A Cr-Mo steel pipe having a wall thickness of 5 to 25 mm consisting essentially of 0.03 to 0.10 wt. % C, 0.5 to 1.0 wt. % Si, 0.3 to 0.6 wt. % Mn, 0.02 wt. % or less P, 0.007 wt. % or less S, 1.0 to 1.5 wt. % Cr, 0.45 to 0.65 wt. % Mo, 0.002 to 0.1 wt. % Al, 0.002 to 0.01 wt. % N, and the balance being Fe and unavoidable impurities. In the method of welding the Cr-Mo steel pipe, the Cr-Mo steel pipe is welded by shielded metal arc welding without a preheat treatment and/or a post weld heat treatment.

    摘要翻译： 厚度为5〜25mm的Cr-Mo钢管基本上由0.03〜0.10重量％ ％C，0.5〜1.0wt。 ％Si，0.3〜0.6wt。 ％Mn，0.02重量％ ％以下P，0.007重量％ ％以下S，1.0〜1.5重量％ ％Cr，0.45〜0.65wt。 ％Mo，0.002〜0.1wt。 ％Al，0.002〜0.01wt。 ％N，余量为Fe和不可避免的杂质。 在焊接Cr-Mo钢管的方法中，Cr-Mo钢管通过屏蔽金属电弧焊而焊接，无需预热处理和/或焊后热处理。

    High strength weldable seamless tube of low alloy steel with niobium
    85.
    发明授权
    High strength weldable seamless tube of low alloy steel with niobium 失效
    具有铌的低合金钢高强度可焊接无缝管

    公开(公告)号：US4784704A

    公开(公告)日：1988-11-15

    申请号：US2270

    申请日：1987-01-12

    申请人： Robert B. Manton

    发明人： Robert B. Manton

    IPC分类号： C22C38/22 ,  C22C38/28

    CPC分类号： C22C38/28 ,  C22C38/22 ,  Y10S148/909

    摘要： A high strength weldable seamless tube of low alloy steel containing 0.24 to 0.28 percent carbon, 1.30 to 1.50 percent manganese, 0.15 to 0.35 percent silicon, not more than 0.01 percent sulphur, not more than 0.03 percent phosphorous, not more than 0.20 percent copper, 0.13 to 0.20 percent chromium, 0.15 to 0.60 percent molybdenum, 0.007 to 0.05 percent of aluminum, not more than 0.02 percent nitrogen, 0.02 to 0.04 percent titanium, 0.0007 to 0.0025 percent boron, 0.02 to 0.10 percent niobium, and the balance iron. The tube is preferably heated to an austenization temperature of about 1,670.degree. F. and simultaneously internally and externally quenched by a special process that provides for high internal cooling rates followed by tempering at about 1,050.degree. F.

    摘要翻译： 含有0.24〜0.28％的碳，1.30〜1.50％的锰，0.15〜0.35％的硅，0.01％以下的硫，0.03％以下的磷，不超过0.20％的铜的低强度可焊性无缝管， 0.13〜0.20％的铬，0.15〜0.60％的钼，0.007〜0.05％的铝，0.02％以下的氮，0.02〜0.04％的钛，0.0007〜0.0025％的硼，0.02〜0.10％的铌和余量的铁。 该管优选被加热至约1670°F的奥氏体化温度，同时通过提供高内部冷却速度随后在约1050°F回火的特殊工艺进行内部和外部淬火。

    Method of making as-pierced tubular products
    86.
    发明授权
    Method of making as-pierced tubular products 失效
    制造穿孔管状产品的方法

    公开(公告)号：US4370178A

    公开(公告)日：1983-01-25

    申请号：US278997

    申请日：1981-06-30

    申请人： George M. Waid ,  Anthony T. Davenport

    发明人： George M. Waid ,  Anthony T. Davenport

    IPC分类号： C22C38/00 ,  C21D6/00 ,  C21D8/10 ,  C21D9/08

    CPC分类号： C21D8/10 ,  Y10S148/909

    摘要： Process of making as-pierced tubular steel casing having a yield strength of 80-110 ksi, a minimum tensile strength of 100 ksi, and a minimum elongation of 121/2% in two inches. The steel is stengthened by precipitation of vanadium carbides, including carbonitrides, and has a ferrite-pearlite microstructure with a ferrite grain size of about ASTM 7 or finer.

    摘要翻译： 制造具有80-110ksi屈服强度，100ksi的最小拉伸强度和2英寸的最小伸长率为121/2％的穿孔管状钢套管的方法。 通过碳化碳等碳化钒的析出来延长钢，并且具有铁素体晶粒尺寸约为ASTM 7或更细的铁素体 - 珠光体组织。

    Process for thermal treatment of tubes
    87.
    发明授权
    Process for thermal treatment of tubes 失效
    管的热处理工艺

    公开(公告)号：US4252578A

    公开(公告)日：1981-02-24

    申请号：US10837

    申请日：1979-02-09

    申请人： Michel Dumont ,  Joseph Huot ,  Pierre Huot

    发明人： Michel Dumont ,  Joseph Huot ,  Pierre Huot

    IPC分类号： C21D9/08

    CPC分类号： C21D9/08 ,  Y10S148/909

    摘要： Elongated steel tubes are grouped together and bound into bundles with bing sufficiently tight that there is no clearance or play between the tubes during heat treatment. Such binding provides a rigid mechanical assembly which prevents any lateral deformation of the tubes with respect to each other. Heat treatment is carried out while the tubes are tightly bound in bundles, and each bundle is supported in the furnace at least at several locations along its length to prevent deformation. The bundles are preferably of hexagon shape in section but can be of other geometric shapes. This technique results in heat treated tubes which are perfectly straight.

    摘要翻译： 细长的钢管被分组在一起，并结合成束，其结合足够紧，在热处理期间管之间没有间隙或游隙。 这种结合提供了一种刚性机械组件，其防止管相对于彼此的任何横向变形。 热管是在管束紧密结合的情况下进行的，并且每个束至少沿其长度的几个位置被支撑在炉中，以防止变形。 束优选为六边形剖面，但可具有其它几何形状。 这种技术导致热处理管是完全直的。