公开(公告)号：US20090020194A1

公开(公告)日：2009-01-22

申请号：US12223126

申请日：2007-01-30

申请人： Kazuo Minemura ,  Yukihiro Chikazawa

发明人： Kazuo Minemura ,  Yukihiro Chikazawa

IPC分类号： C21D9/28 ,  C21D1/42

CPC分类号： C21D1/42 ,  C21D1/10 ,  C21D1/18 ,  C21D1/78 ,  C21D9/00 ,  C21D9/28 ,  C21D11/00 ,  Y02P10/253

摘要： Long work of Fe based alloy while being rotated at a given rotation speed under the action of rotating chucks is heated by high-frequency heating coil to thereby accomplish the heating step. In the first cooling step after termination of the heating, the long work while having its rotation speed increased is brought into contact with first to fourth correction rollers, and in that state is cooled so as to fall within a temperature range of Pf temperature or below to over Ms temperature. The time spent in the cooling preferably ranges from 5 to 10 sec. In the subsequent second cooling step, the rotation speed of the long work is reduced, preferably so as to be equal to that at the heating, and cooling of the long work is continued.

摘要翻译： 在旋转卡盘的作用下以一定速度旋转的Fe基合金的长时间加工被高频加热线圈加热，从而完成加热步骤。 在加热结束后的第一冷却步骤中，使其旋转速度增加的长时间工作与第一至第四校正辊接触，并且在该状态下被冷却以落在Pf温度或更低的温度范围内 超过Ms温度。 在冷却中花费的时间优选为5至10秒。 在随后的第二冷却步骤中，长工件的转速降低，优选地等于加热时的转速，并且继续长工作的冷却。