本专利说明书叙述的是含有碳化钨、碳化铬和钴的一种硬质合金。本发明的一个目的是要提供一种使产品的韧性接近于普通工具钢,同时其硬度又能与细晶粒WC—Co硬质合金相比的硬质合金材料。这种材料虽保持了高速钢的韧性,但却比所有实用的标准高速钢的硬度要高得多。在高速所产生的高温时,仍可保持其硬度。 This patent specification describes a cemented carbide containing tungsten carbide, chromium carbide and cobalt. It is an object of the present invention to provide a cemented carbide material that allows the toughness of a product to approach that of conventional tool steel while its hardness is comparable to fine grain WC-Co cemented carbide. Although this material retains the toughness of high-speed steel, but than all practical standard high-speed steel hardness is much higher. At high temperatures generated by the high temperature, still maintain its hardness.