| 摘要 |
PURPOSE:To obtain a sintered hard alloy in which VC and Cr3C are uniformly dispersed in the stage of using mixing balls and preparing a powder mixture for producing the sintered hard alloy contg. a specific ratio each of VC and Cr3C2 by incorporating a large amt. of VC and Cr3C into the mixing balls. CONSTITUTION:The powder mixture for producing the sintered hard alloy contg. <=1wt% one or two kinds of VC and Cr3C is prepd. by using the mixing balls. The mixing balls contg. a large amt. of one or two kinds of VC and Cr3C2 are used in this case and the compsn. thereof consists preferably of about 35-50wt% VC and/or Cr3C2 and the balance WC and Co. The VC and/or Cr3C is thereby uniformly distributed into the sintered hard alloy after sintering.
|
