我厂装载机产品中需镀铬的零件品种很多,诸如各种阀体中的阀杆和阀芯、油缸中的活塞杆以及各种销、轴等,按以往的工艺流程是磨削→镀铬→磨削→入库。在加工中我们发现,由于经过镀铬前、后两次磨削的装夹误差,往往使镀层不均,甚至出现局部无铬或脱铬现象,严重影响了产品质量。经过摸索分析,我们改变了传统的工艺方法,采用磨削→镀铬→抛光→入库的新工艺,也就是通常所称的尺寸镀铬方法,或称精密镀铬方法,即用镀铬工 I plant a variety of parts to be chrome-plated loader products, such as the various valve stems and spools, the cylinder piston rod and a variety of pins, shafts, etc., according to the previous process is grinding → chrome → Grinding → storage. In processing, we found that due to the clamping error of the two grinding before and after chrome plating, the coating is often uneven, even partial chromium or chromium removal phenomenon, seriously affecting the quality of the product. After groping analysis, we have changed the traditional process methods, the use of grinding → chrome → polishing → storage of new technology, which is commonly referred to as the size of chrome plating method, or precision chrome plating method, that is chrome-plated