公开(公告)号：US4142713A

公开(公告)日：1979-03-06

申请号：US797116

申请日：1977-05-16

申请人： Hajime Nakasugi ,  Tsurugi Kimura ,  Teruo Tanimoto ,  Tsutomu Sakimoto

发明人： Hajime Nakasugi ,  Tsurugi Kimura ,  Teruo Tanimoto ,  Tsutomu Sakimoto

IPC分类号： C21D9/08 ,  C21D9/50 ,  C21D9/14

CPC分类号： C21D9/08 ,  C21D9/50

摘要： In the method of heat-treatment of welded pipe having a reinforcement weld bead therealong by heating the pipe by using an induction heating device and then by cooling it, the bead which has just been heated by the induction heating device, is further heated by a bead heater to a temperature such that the temperature difference between the metal of the pipe and the bead is smaller than a temperature difference which will produce a bad influence on the quality of the pipe.In the apparatus for heat-treatment of welded pipe having a reinforcement weld bear therealong by heating and then by cooling the pipe respectively by a heating device and a cooling device arranged in the direction of travel of the pipe, there is provided between the heating device and the cooling device a temperature-difference detector for detecting the temperature difference between the metal of the pipe and the bead, and also a bead heater for heating the bead so as to make the temperature difference between the metal of the pipe and the bead smaller than the aforementioned temperature difference.

摘要翻译： 在通过使用感应加热装置加热管道然后通过冷却将具有加强焊道的焊接管热处理的方法中，刚刚被感应加热装置加热的焊道进一步被加热 胎圈加热器的温度使得管子和胎圈的金属之间的温度差小于对管子质量产生不良影响的温度差。