A method of removing residual pores and changing the composition of the bonding metal by the infiltration in the production of tungsten carbide-based cemented carbide

摘要

The molten infiltrating of forming media of WC-3-5% Co, that of Co powder on sintered material of this for 1hr at 1200C, that of C-25% WC mixed powder, that of Co-25% WC-0.1% C mixed powder, that of Ni- 25% WC mixed powder, that of WC-25.3% Fe-6.7% Ni-3.3%Co mixed powder or molten infiltrating media of these materials sintered for 1hr at 1200C in a vacuum sintering furnace at 1350-1500C can remove residual pores and change the composition of binding.