| 摘要 |
<P>PROBLEM TO BE SOLVED: To achieve a suitable recycling in a method of recycling cemented carbide with a high Co content using Zn decomposition method by suitably melting and diffusing melted Zn into Co and improving a recovery rate of the cemented carbide. <P>SOLUTION: When melting and diffusing cemented carbide granules containing WC as a principal component and Co as a binder component into the melted Zn, the cemented carbide granules are made easier to be infiltrated into the melted Zn by pressurizing the melted Zn housed in a crucible at a temperature at which Co and Zn change into a liquid phase under a Co-Zn constitutional diagram, and the melted Zn in the crucible is convected so as to be suitably melted and diffused into the cemented carbide granules by moving up and down or vibrating by falling the melted Zn. As a result, compared with conventional methods, more melted Zn is melted and diffused into Co and the recovery rate of the cemented carbide granules improves, thereby enabling the suitable recycling. <P>COPYRIGHT: (C)2013,JPO&INPIT |
