METHOD FOR PRODUCING WC-CO COMPOSITE POWDER

摘要

A method for producing WC-Co composite powder comprising the steps of mixing WC powder and a fluid to prepare a slurry, electrically exploding a cobalt metal wire in the slurry, and drying the fluid contained in the slurry is provided. According to the method for producing WC-Co composite powder of the present invention, as the result of exploding a cobalt metal wire in the slurry prepared by mixing WC powder and a fluid, cobalt powder behaving as a matrix phase can essentially be protected from oxidation, the WC powder can form a homogeneously blended composite together with the cobalt metal powder, and the resulting WC-Co composite powder contributes to high strength of hard metal cemented carbide, which is advantageous as a raw material for manufacturing carbide tools, abrasion resistant parts, and die products.