日期:2012-04-17 09:59
or plating process featuring partial black brushed nickel plating and partial gold plating on the same metallic component was introduced．The process flow includes electroplating background color，coating barrier paint，laser engraving pattern，secondary electroplating， removing barrier paint and spraying protective coating． Some points for attention were given，such as shortening the interval between steps and preventing workpiece scratching． The process has the features of special two―colo