Electrostatic powder coating system

What is the role of online spray pre-treatment in powder coating equipment/ powder coating machine? The role of online spray pre-treatment in powder coating equipment is to prepare the surface of the substrate before the powder coating process. It involves the application of a chemical solution or spray onto the surface to remove any contaminants, such as dirt, oil, grease, or rust, and to improve the adhesion of the powder coating. Online spray pre-treatment typically consists of multiple stages, including cleaning, rinsing, and chemical treatment. The cleaning stage involves the removal of loose particles and surface contaminants using water, detergent, or a combination of both. Rinsing follows to remove any residual cleaning agents and prepare the surface for the chemical treatment. Chemical treatment is a crucial step in the pre-treatment process. It involves the application of a chemical solution, such as a phosphate or chromate-based compound, onto the surface. This chemical t…