hard chromium surface treatment

1、The product has good abrasion performance. The hard chromium additive is added, so the chromium plating hardness is 850-1,100HV, the number of cracks is more than 400, and the sliding friction coefficient is about 50% of steel and cast iron. The product owns adhesion resistance.
2、With better corrosion resistance, under the effect of slight oxidation (i.e. surface passivation), the chromium plating layer may form a very thin and transparent passivation film whose color is not changed at room temperature for a long time, to protect the chromium plating layer.