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The surface treatment technology

2021-08-31

According to the different methods used, the surface treatment technology can be divided into the following categories:

- Electrochemical method

This method uses electrode reaction to form a coating on the surface of the workpiece. The main methods are Plating and Oxidation.

- Chemical method

This method has no current action, and uses the interaction of chemical substances to form a plating layer on the surface of the workpiece. The main methods are Chemical conversion coating treatment and Electroless plating.

- Thermal processing

This method is to melt or thermally diffuse the material under high temperature conditions to form a coating on the surface of the workpiece. The main methods are Hot dip plating, Hot stamping, Chemical heat treatment, Surfacing.

- Vacuum method

This method is a process in which materials are vaporized or ionized and deposited on the surface of the workpiece in a high vacuum state to form a coating. The main method are Physical vapor deposition, Ion Implantation, Chemical vapor deposition.

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