Forged steel gate valves often undergo phosphating treatment during processing. So what is the role of this treatment?
Phosphating involves immersing the forged steel gate valve in a phosphating solution to deposit a dense and water-insoluble crystalline phosphate conversion film on its surface.
The purpose of phosphating is to prevent rust. The details are as follows:
1. Provide protection for the base metal to prevent it from being corroded to a certain extent.
2. Used as a primer before painting to improve the adhesion and corrosion resistance of the paint film layer.
3. Used for friction reduction and lubrication during metal cold working.