常用的大连机械加工外貌处理：发黑、阳极氧化、镀铬、镀镍、镀钛、镀锌、电抛光、钝化、镀PVD膜、加纳克等。

精密零部件的加工工艺(热处理工序)
，确定各工序所用的机床、装夹要领、怀抱要领、加工余量、切削用量和工时定额等。将各项内容填写工艺规程表上
，这就是机械加工工艺的规程。

Common surface treatments for mechanical processing in Dalian include blackening, anodizing, chrome plating, nickel plating, titanium plating, zinc plating, electropolishing, passivation, PVD coating, Ganak coating, etc. The processing technology (heat treatment process) of precision components, determining the machine tools, clamping methods, measurement methods, machining allowances, cutting parameters, and working hour quotas used in each process. Fill in the various contents on the process specification form, which is the specification for mechanical processing technology.