1.前言烧结材料现正广泛应用于汽车和各种机械零件上。主要有下述理由:(1)尺寸精度高,不必采用切削、磨削等加工工艺;(2)即使有必要加工,加工余量也很小;(3)烧结材料(合金)的设计选择性强,依靠原材料的选择,容易获得满足质量和性能要求的材料; 1. Introduction Sintered materials are now widely used in automobiles and various mechanical parts. Mainly for the following reasons: (1) high dimensional accuracy, do not have to use cutting, grinding and other processing technology; (2) even if the need for processing, machining allowances are small; (3) sintered material (alloy) design selectivity Strong, rely on the choice of raw materials, easy access to meet the quality and performance requirements of the material;