Surface treatment method of aluminum alloy CNC machining
Many people know CNC machining and understand the meaning of CNC machining. But the meaning of aluminum alloy CNC machining is not understood. In fact, CNC machining of aluminum alloy is a method of using digital information to control the movement and processing of machine tools.
1. Numerical Control Machining of aluminum alloy shell and electroplating tin-cobalt alloy
The color of tin-cobalt alloy electroplating and cobalt electroplating are similar, but they are softer and more popular. At present, most foreign countries are used to replace chromium. Cobalt electroplating is not easy for barrel plating, while electroplating tin-cobalt alloy is suitable for barrel plating of small parts. In addition, electroplating tin-cobalt alloy has excellent throwing ability and barrel plating ability, so it can be applied to workpieces with complex shapes. If double-layer nickel is plated on the bottom layer, its corrosion resistance is no less than that of chromium plating. In order to prevent the surface from discoloring, it should be treated by immersion in chromate, which can also improve its corrosion resistance.
It has a pale rose hue, which makes people feel very good, and has excellent corrosion resistance. Some people said it is the Best Aluminum Alloy For Machining. If tin-nickel alloy electroplating is applied to a shiny substrate or on a bright nickel plating layer, a good shiny surface can be obtained. If electroplating is performed on a matte surface (pear pattern), the original condition of the surface can appear. The plating ability of the electroplating layer is very excellent, almost no leveling effect, so it is suitable for the electroplating of very fine lines and rotating processed products.
2.
CNC Aluminum Alloy parts electroplating copper-tin alloy
The color of the low-tin bronze coating of the aluminum alloy shell is pink or golden, with fine crystals. It has high corrosion resistance and good polishing performance. It is often used as a protective-decorative nickel underlayer and is used in light industry and handicraft. , Mechanical instrument industry and other industries. The color of the medium tin bronze coating is golden, and the corrosion resistance is good. Mainly used as the bottom layer of decorative chrome plating. The hardness and air stability of aluminum alloy processing is higher than that of low tin bronze coating. However, due to the high tin content of the plating layer, the bottom layer of the protective decorative plating layer is prone to bloom after the chromium is covered. This is the weakness of the medium tin bronze plating layer. The high tin bronze coating has beautiful silver-white luster and good polishing performance, high hardness and abrasion resistance, and is used to replace silver or chromium in industrial design as protection for reflective equipment, instruments, and daily commodities. Decorative surface coating.
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