| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method for manufacturing a bearing ring, for uniformly forming a quench-hardened layer by induction hardening over the entire periphery along a rolling surface while suppressing the manufacturing cost of a quenching apparatus. <P>SOLUTION: The method for manufacturing the bearing ring for a rolling bearing includes: a step (S10) for preparing a formed body made of a hypereutectoid steel; a step (S30) for forming, in the formed body, an annular heated region that is heated to a temperature equal to or higher than a point A<SB POS="POST">1</SB>by relatively rotating in the circumferential direction of the annular region an induction heating member that performs induction heating of the formed body and that is disposed to face a part of the annular region in the formed body that is to be the rolling surface of the bearing ring; and a step (S40) for simultaneously cooling the whole heated region to a temperature equal to or lower than a point Ms. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
