Principle Of Phosphating Agent

The principle of a phosphating agent is that the phosphating solution itself reacts with the substrate to form a dense chemical conversion film on the surface of the substrate, in order to protect the substrate.
Phosphating treatment
Phosphating is a commonly used pre-treatment technology, which should belong to chemical conversion film treatment in principle. It is mainly used for surface phosphating of steel, and can also be applied to non-ferrous metal (such as aluminum and zinc) parts.
Phosphating is a process of chemical and electrochemical reactions to form a phosphate chemical conversion film, and the resulting phosphate conversion film is called a phosphating film.
The main purpose of phosphating is to provide protection to the base metal and to some extent prevent corrosion of the metal; Used for primer before painting to improve the adhesion and corrosion resistance of the paint film layer; Plays a role in reducing friction and lubrication in metal cold working processes.