11 Facts About Chrome plating

Chrome plating is a technique of electroplating a thin layer of chromium onto a metal object.

Hexavalent chromium Chrome plating solution is used for decorative and hard Chrome plating, along with bright dipping of copper alloys, chromic acid anodizing, and chromate conversion coating.

Typical hexavalent chromium Chrome plating process is: activation bath, chromium bath, rinse, and rinse.

One functional disadvantage of hexavalent chromium Chrome plating is low cathode efficiency, which results in bad throwing power.

Trivalent chromium Chrome plating process is similar to the hexavalent chromium Chrome plating process, except for the bath chemistry and anode composition.

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Decorative chrome plating is very corrosion resistant and is often used on car parts, tools and kitchen utensils.

Hard chromium Chrome plating is subject to different types of quality requirements depending on the application; for instance, the Chrome plating on hydraulic piston rods are tested for corrosion resistance with a salt spray test.

However, chrome plating is metal and contains no hexavalent chromium after it is rinsed, so chrome plating is not banned.

Chrome plating-lining protects the barrel or chamber of arms from corrosion and makes these parts easier to clean, but this is not the main purpose for lining a barrel or chamber.

Chrome plating-lining was introduced in machine guns to increase the wear resistance and service life of highly stressed arms parts like barrels and chambers, allowing more rounds to be fired before a barrel is worn and needs to be replaced.

Chrome plating-lining has a negative effect on the maximum achievable accuracy of barrels.