How to do phophating blackening treatment?
Author: Marisa
The process flow of phosphating blackening treatment mainly includes the following steps:
Degreasing: Firstly, the workpiece needs to be degreased to remove surface grease and dirt. Subsequently, rust removal is carried out to remove rust and oxide scale from the surface of the workpiece. After completing these two steps, the workpiece needs to be washed with water to remove residual degreaser and rust remover.
Surface conditioning processing: Next, the workpiece needs to be soaked in the surface conditioning solution, usually for about 1 minute. The purpose of this step is to adjust the chemical properties of the workpiece surface for better phosphating treatment.
Phosphating treatment: Soak the treated workpiece in a phosphating solution heated to 95 degrees Celsius for about 10 minutes. The chemical components in the phosphating solution will react with the surface of the workpiece to form a phosphating film. After completing this step, the workpiece needs to be washed with water to remove any residual phosphating solution on the surface.
Post processing: Finally, the workpiece needs to be washed and dried. After drying, dehydrated anti rust oil can be applied to the surface of the workpiece to increase its anti rust ability.
Application areas and effects of phosphating blackening treatment:
Phosphating blackening treatment is widely used in surface treatment of steel materials, mainly for rust prevention and increasing wear resistance. The formation of phosphating film can significantly improve the corrosion resistance and adhesion of workpieces, and is suitable for surface treatment of various metal products.