热处理工艺: 真空淬火，真空渗碳淬火，真空渗氮淬火
Heat Treatment: Vacuum Quenching, Vacuum Carburizing Quenching, Vacuum Nitrogen Infusion & Oil Quench.

真空渗氮淬火优点: 
其变形量仅是碳氮共渗淬火大约一半，同时，也只比气体软氮化的变形量稍微大一点而已。
Advantages for Using Nitrogen Infusion & Oil Quench: 
Little distortion (merely reaches the same degree as gas nitriding) and ½ comparing to the product that went through carbonitriding.

真空渗碳淬火优点:
无结晶粒间的氧化，成品外观良好，亦可以对细孔内达成高浓度及均匀度的渗碳。
Advantages for Using Vacuum Carburizing Quenching:
No oxidization of the surface, also could achieve the carburizing in narrow holes with high concentration and distribution of the carburization.