Powder metallurgy using a variety of forming process, the powder material can be directly formed into a small margin, no margin of the rough or net parts, a substantial reduction in machining capacity. Improve material utilization, reduce costs. (WC), titanium carbide (TiC), tantalum carbide (TaC) and other hard alloy, such as tungsten carbide, and other refractory metals and alloy products; Used in the manufacture of cutting tools and wear knives in the drill bits, turning tools, milling cutter, but also manufacturing molds; Cu alloy, stainless steel and Ni and other porous materials for the manufacture of sintered oil bearing, sintered metal filters and textile rings The With the development of powder metallurgy production technology, powder metallurgy and its products will be more widely used.