| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method for correcting heated deformation of a new annular body which can be easily corrected to a true circle, and a hardening method for the annular body. <P>SOLUTION: In the method for correcting the deformation developed at the time when the annular body 10 composed of a steel is heated, the annular body 10 is heated to the temperature of the A<SB>c1</SB>transforming point or higher in a state the outer diameter of the annular body 10 is restrained with an outer-diameter restraining die 20. In this way, strain and the deformation before heating the annular body 10 are wholly removed and the shape of the annular body 10 can easily be corrected to the shape nearer the true circle. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
