Carbide is an excellent tool material, mainly used for cutting tools, metal forming tools, mining tools, surface wear-resistant materials and high-rigidity structural components. Type has tungsten carbide, steel bonded carbide, coated carbide, fine grain cemented carbide. Steel-based cemented carbide is a new type of mold material, the performance between high-speed tool steel and cemented carbide, is one or several carbides (such as WC, TiC) for carbon steel or alloy steel (Such as high-speed tool steel, chromium molybdenum steel, etc.) powder as a binder, by ingredients, pressing, sintering and made of powder metallurgy materials.