The surface to be coated must be free from oil, grease, water, corrosion, scale, etc. Part surfaces must be thoroughly degreased before applying a lubricating coating. Cleanliness of the surface to be coated is an important prerequisite for good adhesion and function of lubricating coatings. In addition, sufficient surface roughness is required for the lubricating coating to be firmly applied to the part surface.

 

Degreasing and cleaning are carried out in ultrasonic vessels using  solvents that leave no residue after evaporation, such as alkalis, water-soluble agents, ethyl acetate, acetone or volatile white alcohol. Roughening of metallic materials can be achieved by purely mechanical processes such as sandblasting or by chemical processes such as phosphating to provide additional corrosion protection.

 

After degreasing and roughening, parts should not be touched with bare hands. Depending on the coating method selected to meet the part's geometry and tribological requirements, lubricating coatings are applied by techniques commonly used in paint application, such as dipping, spraying, tumbling or deep spinning.

 

Thermosetting lubricating coating requires a burning process at temperatures between 160℃ and 250℃. Air-drying lubricating coatings must be cured at room temperature before exposure to loads. Please consult with a lubricating coating expert regarding curing and burning time.