Method for improving the performance of seam-welded joints using post-weld heat treatment
    10.
    发明申请
    Method for improving the performance of seam-welded joints using post-weld heat treatment 失效
    使用焊后热处理改善缝焊接头性能的方法

    公开(公告)号:US20080115863A1

    公开(公告)日:2008-05-22

    申请号:US12009279

    申请日:2008-01-17

    Abstract: The present invention provides a method for heat-treating seam-welded constructions of hardenable steel and ferrous alloys with reduced weld-zone hardness and improved weld-zone ductility and toughness. This method consists of heating the seam weld rapidly with a secondary heat source to a temperature greater than the martensitic start temperature but not greater than the lower critical temperature, followed by immediately allowing the seam weld to air-cool. The rapid tempering of this invention is particularly suited to the production of high strength hardenable alloy seam-welded pipe and tubing and other structures.

    Abstract translation: 本发明提供了一种用于对具有降低的焊接区硬度和改善的焊接区延展性和韧性的可硬化钢和铁合金的缝焊结构进行热处理的方法。 该方法包括将二次热源快速加热到大于马氏体开始温度但不大于较低临界温度的温度,然后立即允许缝焊进行空气冷却。 本发明的快速回火特别适合于生产高强度可硬化合金缝焊管和管等结构物。

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