| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an induction hardening method on the peripheral wall of the pin insertion hole of an angle changing mechanism comprising a pin and the pin insertion hole of a fluid machine and capable of inhibiting generation of a quenching crack on the surface of the outer peripheral section of an iron arm formed with the pin insertion hole. <P>SOLUTION: The induction hardening method on the peripheral wall of the pin insertion hole of the angle changing mechanism comprising the pin and the pin insertion hole of the fluid machine comprises induction hardening from the inside of the pin insertion hole while cooling the outer peripheral section of the iron arm formed with the pin insertion hole. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
