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公开(公告)号:US4772336A
公开(公告)日:1988-09-20
申请号:US15624
申请日:1987-02-17
申请人: Kunio Enomoto , Tasuku Shimizu , Shinji Sakata , Terunobu Koike , Nobuo Shimizu , Tsukasa Ikegami
发明人: Kunio Enomoto , Tasuku Shimizu , Shinji Sakata , Terunobu Koike , Nobuo Shimizu , Tsukasa Ikegami
CPC分类号: C21D9/50
摘要: A method for improving residual stress in a circumferential weld zone of a piping and the like which includes preventing deformation of the weld zone, and causing a local expansion or contraction of a portion of the piping axially spaced from the weld zone thereby effecting a plastic working so as to increase or decrease the diameter of piping. The method can effectively be applied to apparatus and pipe system which are used in a corrosive environment and under action of a static or dynamic outer load.
摘要翻译: 一种用于改善管道等的周向焊接区域中的残余应力的方法,其包括防止焊接区域的变形,并且使得管道的一部分的局部膨胀或收缩与焊接区域轴向间隔开,从而实现塑性加工 以便增加或减少管道的直径。 该方法可以有效地应用于在腐蚀性环境中和静态或动态外部负载作用下使用的设备和管道系统。