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众所周知,粉末冶金结构零件具有节材、省能、质优、价廉,适于大批量生产的特点,在机械制造工业,如家用电器、空调器、电动工具、纺织机械、复印机事务机械中,特别是在汽车和摩托车中得到了十分广泛的应用。世界各发达国家的粉末冶金机械结构零件,其产量中用于汽车和摩托车工业的竞达70％～80％。在我国,汽车工业已成为国家的四大支柱产业之一,摩托车的产量已跃居世界各国的前列。因此本手册的编写是十分应时的。
As we all know, powder metallurgy structural parts with saving, high quality, low cost, suitable for mass production characteristics, in the machinery manufacturing industry, such as household appliances, air conditioners, power tools, textile machinery, copiers, Especially in cars and motorcycles has been a very wide range of applications. Powder metallurgy mechanical structural parts of various developed countries in the world produce 70% to 80% of their output for the automobile and motorcycle industries. In our country, the automobile industry has become one of the four pillar industries of our country. The output of motorcycles has risen to the forefront of all countries in the world. Therefore, the preparation of this manual is very timely.