Effect of phosphating treatment on metals and environment

Phosphating treatment is a certain process before the coating of steel surface, which is mostly carried out by soaking and spraying, but some large and special workpieces are treated by brush coating. After brushing, it is generally natural air drying. The corrosion resistance of the phosphate film formed by natural air drying is significantly higher than that formed by washing and drying. At present, the development direction of phosphating technology is mainly to improve quality and reduce pollution, energy conservation, non-toxic and environmental protection.

Further, clean phosphating should be taken into account in the formulation design of phosphating solution in terms of saving materials, energy, reasonable functions, and so on, on the premise of not harming health and damaging the ecological environment.

This method is widely used in all walks of life in metal surface treatment, especially the solution prepared from zinc-iron phosphating solution is stable, not easy to precipitate and turbid, the ceramic agent manufacturer has good adhesion with the substrate and coating, and has no pollution to the environment.