Surface treatment can be divided into four aspects:
1. Mechanical surface treatment: sandblasting, shot blasting, polishing, rolling, polishing, brushing, spraying, painting, oiling, etc.
2. Chemical surface treatment: blue and black, phosphating, pickling, electroless plating of various metals and alloys, TD treatment, QPQ treatment, chemical oxidation, etc.
3. Electrochemical surface treatment: anodic oxidation, electrochemical polishing, electroplating, etc.
4. Modern surface treatment: chemical vapor deposition CVD, physical vapor deposition PVD, ion implantation, ion plating, laser surface treatment, etc.
The above listed are aspects, not types. For example, sandblasting includes dry sandblasting, wet sandblasting, atomized sandblasting, air-water sandblasting... Spraying includes electrostatic spraying, flame spraying, powder spraying, plastic spraying, plasma spraying, explosive spraying and so on. Electroplating includes copper plating, chromium plating, zinc plating, nickel plating, etc. Electroplating processes. For example, copper plating can be divided into acidic and alkaline copper plating according to different pH values. According to the main salt classification formed by the main components of copper ion and electrolyte, there are cyanide copper plating, pyrophosphate copper plating, citrate copper plating, sulfate copper plating, tartrate copper plating, and fluoroborate copper plating And their bright copper plating and other processes.