What kinds of metal surface treatment processes are there?

There are generally several kinds of metal surface treatment processes: electrochemical methods, including electroplating and oxidation. Chemical methods, including chemical conversion film treatment and electroless plating. Hot working methods include hot dip plating, hot spraying, hot stamping, chemical heat treatment and surfacing. Vacuum methods include physical vapor deposition (PVD), ion implantation and chemical vapor deposition (CVD).

1, electroplating is the process of plating a thin layer of other metals or alloys on the surface of some metals by using the principle of electrolysis. It is a process of attaching a metal film on the surface of metal or other materials by electrolysis, which can prevent metal oxidation (such as corrosion) and improve wear resistance, conductivity, reflectivity and corrosion resistance (such as copper sulfate). ) and improve the appearance.

2. Chemical conversion film, also known as metal conversion film. It is the interaction between atoms on the surface of metal (including electroplated metal) and anions in the medium that forms a well-adhered isolation layer on the metal surface. This compound isolation layer is called chemical conversion film. The formation of conversion film can be a pure chemical reaction between metal and medium or an electrochemical reaction.

3. Hot dip plating is called hot dip plating. Hot dip plating is a process of immersing the plated parts in molten metal to form a metal coating on their surfaces.