The surface treatment for aluminum parts
1.Electroplated tin cobalt for aluminum alloy parts.The tinplate of tin cobalt alloy electroplating is close to that of cobalt plating, Cobalt plating is not easy for barrel plating, while electroplated tin cobalt alloy can be applied to barrel plating of small parts. In addition, electroplated tin cobalt alloy has excellent plating ability and barrel plating ability, so it can be applied to complex shaped work pieces. If double nickel is plated on the bottom, its corrosion resistance is no less than that of chrome plating. In order to prevent surface discoloration.
1. A good gloss surface can be obtained if the substrate or the electroplating layer of bright nickel is electroplated with tin nickel alloy. For example, plating on the lustrous surface (pear pattern) can reproduce the original condition of the surface. The electroplating has excellent plating ability and almost no leveling effect, so it is suitable for electroplating of very fine lines and rotated products.
3, aluminum alloy CNC machining electroplating copper - tin alloy
The low tin bronze coating of the aluminum alloy shell is pink or golden, with fine crystallization. It has high corrosion resistance and good polishing performance. It is often used as a protective decorative nickel base and is widely used in light industry, handicraft industry, mechanical instrument industry and other industries. The tin bronze coating is golden yellow with good corrosion resistance. It is mainly used as the bottom of decorative chrome plating. The hardness and air stability of aluminum alloy are higher than those of tin bronze. However, due to the high tin content of the coating, the bottom of the protective coating is easy to flower after being coated with chromium, which is the weakness of tin tin bronze coating. High tin bronze coating has beautiful silver white luster and good polishing performance, high hardness and wear resistance. It is used in industrial design instead of silver or chromium as reflective instrument, instrument, daily commodity and so on - decorative surface coating.
Next Article:FANUC system of CNC lathe
