Ni addition of a small amount WC-Co based cemented carbide or tool using it

摘要

[ PROBLEMS] Conventional forging tools , cutting tools , cemented carbide used in mining tools , to improve the impact compression strength has been desired . SOLUTION: In the WC-Co cemented carbide , a range that does not impair the the ' transformation Co (0.1at% or more U 5/U Or less at%) in is replaced with Ni , Cr was added to the binder phase of the following 4mass% more than 8.8mass%, the average particle size of WC is less than 5.0m beyond 1.0m, is prepared by cemented carbide . [ Selection Figure ] Figure 6