从国内外齿轮生产的历史及其使用情况来看，目前渗碳淬火仍是齿轮的主要热处理强化手段。尤其是负荷大，精度要求高的齿轮，多数采用渗碳（或碳氮共渗）淬火加磨齿工艺以提高齿轮的使用性能。然而，渗碳淬火齿轮（尤其是合金钢齿轮）在磨齿过程中出现磨削裂纹的事件却时有发生 From the history of gear production at home and abroad and its use point of view, the current carburizing and quenching is still the main means of heat treatment to strengthen. In particular, large load, high precision gears, the majority of carburizing (or carbonitriding) quenching plus grinding process to improve the performance of the gear. However, the occurrence of grinding cracks in the carburizing and quenching gears (especially alloy steel gears)