涂镀在防渗碳中的应用当零件需要局部渗碳时,过去多采用:整体渗碳后去除不需渗碳的部位;采用防渗涂料;整体镀铜后再去除要求渗碳部位的镀层;局部镀铜等方法。但一、三两种方法成本高、周期长;涂防渗涂料的方法效果不够理想;局部镀铜方法在采用槽镀时又难以实现,图1就是 Application of coating in anti-carburizing When the parts require local carburizing, the past use of more: the overall carburizing removal of parts without carburizing; the use of impermeable coating; the overall removal of copper after the required carburizing coating ; Local copper and other methods. However, one or three of the two methods have high cost and long period; the effect of the method of applying the anti-seepage coating is not satisfactory; the method of the partial copper plating is difficult to realize when the groove plating is adopted;