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湖州努特表面處理科技有限公司 湖州努特表面處理科技有限公司

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Continuous coil-to-coil electroplatingCeramic plating, ceramic circuit boardElectrochemical polishing, passivation, nickel-chromium plating, electroless nicLow-temperature black chromiumhard chromium surface treatmentZinc plating productsSurface treatment for auto partsElectroless nickel platinggold platingCopper, nickel and chromium platingElectrosilvering

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.

Detail
Hard chromium of measuring instruments
 Partial hard chromium of auto parts

Hard chromium characteristics
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.