The properties and application of the common electric plating
Is on the substrate surface metal plating layer is one of the advanced method, by controlling the electroplating process conditions (the composition of plating solution, current, temperature, plating time, etc.), not only can adjust the thickness of the coating, and can change the appearance and properties of coating.Electroplating can not only in all kinds of metal material surface plating metal layer, can also through special processing, metal deposition on the surface of the non-metallic materials. The following will introduce common kinds of coating.
(1) nickel plating
Nickel plating for steel parts for Yin polarity coating, has high hardness, corrosion resistance is higher than copper, alkali resistant, also more acid. Used in the copper plating of steel parts/nickel/chromium protection - the middle layer of decorative coating, and acidic copper plating before plating.
(2) the cadmium plating
In the ocean and high temperature atmospheric environment, cadmium plating for steel parts for anode sex coating, the coating is stable, strong corrosion resistance, good lubrication performance, applied in the aviation and electronic industry.
(3) the chrome plating
Chromium plating on steel parts for Yin polarity coating, has high heat resistance, good hardness under normal temperature, good abrasion resistance, strong light reflex, is widely used to improve the wear resistance of part, light reflectivity, and repair size and decoration, etc.
(4) the tin plating
Tin coating for steel parts for Yin polarity coating. Therefore, only when the coating without gap can automatically protect steel parts from corrosion. This kind of coating has high chemical stability, and little of sulfur and sulfide, welding performance is good, have a shielding effect on nitriding.
(5) copper plating
Copper plating for zinc, iron and other metal for Yin polarity coating. Often used in steel, or some plastic as a copper/nickel plated protection - the bottom layer of decorative coating or layer, can also be used for printed circuit, the electric molds, etc.
(6) silver plating
Silver plating for the commonly used for the cathode metal plating, conductive, brazing performance is good, stable chemical properties. Is mainly used for conducting parts and welding parts in the electronics industry, also used for protection - decorative coatings, such as Musical Instruments, tableware, optical instruments and crafts
