| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide the hardening method of a machine component for efficiently removing an oxide film at the point of time of completion of the heat treatment without adding any exclusive apparatus for jetting solid particles or any new process. <P>SOLUTION: In the hardening method of the machine component, when the machine component is subjected to high frequency heating in the atmosphere, and subjected to the hardening by jetting cooling agent to the machine component, The cooling agent to be used when cooling is jetted, in which solid particles having the maximum diameter of≤850μm are mixed by 10-60 vol.% in terms of the flow ratio. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
