公开(公告)号：EP2713485A4

公开(公告)日：2015-08-19

申请号：EP13741187

申请日：2013-01-22

申请人： NIPPON STEEL & SUMITOMO METAL CORP ,  TOYOTA MOTOR CO LTD

发明人： OHSUGI YASUO ,  HAMAYA TSUYOSHI ,  ARAI SATOSHI ,  YANAGIDA EIJI ,  SANO SHINYA ,  KONDO MASAAKI ,  TAKAHASHI TOSHIMITSU ,  SATO YOJI

IPC分类号： H02K15/02 ,  C21D1/26 ,  C21D1/34 ,  C21D8/12 ,  C21D9/00

CPC分类号： C21D9/0068 ,  C21D1/09 ,  C21D1/26 ,  C21D1/34 ,  C21D8/12 ,  C21D9/00 ,  H02K15/024 ,  H02K15/12

摘要： Provided is a method of annealing a metal member, including: disposing a first heater in an inner space of a hollow cylindrical metal member having an inner peripheral surface provided with plural teeth protruding toward a central direction, the first heater radiating infrared light and being disposed so as to extend parallel to a direction of a central axis of the metal member; heating the metal member from the inner space with the first heater; and gradually cooling the metal member after heating.