粉末冶金是一项少无切削的新工艺新技术。它不但能制取那些用一般方法所不能制造的特殊材料,如多孔材料、硬质合金、电接触材料、电真空材料、耐热材料等等,而且可以从粉末直接制成各种机械零件,取代铸锻冲压及金属切削等加工的一些零件,如含油轴承、连杆、直、斜齿轮、凸轮、链轮、活塞、极靴等等。因此,粉末冶金现在 Powder metallurgy is a new technology with no cutting new technology. It can not only make those special materials that can not be made by ordinary methods, such as porous materials, cemented carbide, electrical contact materials, electric vacuum materials, heat-resistant materials and so on, but also can be directly made from powder into various mechanical parts, Replace cast and forged stamping and metal cutting and other processing parts, such as oil bearing, connecting rod, straight, helical gears, cams, sprockets, pistons, pole shoes and so on. Therefore, powder metallurgy now