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Home - News - The surface treatment of CNC machining of aluminum alloy is as follows

The surface treatment of CNC machining of aluminum alloy is as follows

November 16, 2022

Many people know CNC machining and understand the meaning of cnc machining. But they do not know what aluminum alloy cnc machining means. In fact, aluminum alloy cnc machining is a method of using digital information to control the movement of the machine tool and the machining process. The machine tool that uses CNC technology to implement processing control, or the machine tool that is equipped with CNC system is called CNC (NC) machine tool.
latest company news about The surface treatment of CNC machining of aluminum alloy is as follows  0
1, aluminum alloy shell CNC machining electroplated tin - cobalt alloy


Electroplated tin-cobalt alloy is closer to the tone of electroplated cobalt, but softer and more popular. At present, most foreign countries are used to replace chromium. Electroplated cobalt is not easy for barrel plating, while electroplated tin-cobalt alloy can be used for barrel plating of small parts. In addition, the electroplated tin-cobalt alloy has excellent uniform plating ability and barrel plating ability, so it can be applied to complex-shaped workpieces. If double layer of nickel is plated on the base layer, the corrosion resistance is no less than that of chromium plating. To prevent surface discoloration, it should be treated with chromate impregnation, which also improves its corrosion resistance.

It has the appearance of light rose hue, which makes it very good and has excellent corrosion resistance. If a tin-nickel alloy plating is applied to a lustrous substrate or on top of a bright nickel plating, a good lustrous surface can be obtained. If plating is applied on a non-glossy surface (pear pattern), the original condition of that surface can appear. The uniform plating ability of the plating layer is excellent, and there is almost no leveling effect at all, so it is suitable for the plating of products requiring very fine lines and rotary processing.
latest company news about The surface treatment of CNC machining of aluminum alloy is as follows  1
2、Aluminum alloy CNC processing plating copper-tin alloy


The color of low tin bronze plating of aluminum alloy shell is pink or golden yellow, fine crystallization, it has high anti-corrosion ability and good polishing performance, often used as a protective-decorative nickel base layer, used in light industry, handicraft industry, mechanical instrument industry and other industries. Medium tin bronze plating has a golden color and good corrosion resistance. It is mainly used as a decorative chrome plating base layer. The hardness and stability in air of aluminum alloy processing is higher than that of low tin bronze plating. However, due to the high tin content of the plating, the base layer used as a protective decorative plating tends to bloom after the chromium set, which is the weakness of the medium tin bronze plating. High tin bronze plating has a beautiful silver-white luster and good polishing performance, high hardness and wear resistance, and is used in industrial design instead of silver or chromium as a protective and decorative surface plating for reflective instruments, instruments, daily commodities, etc.