CHG International Limited
Your Trusted Partner in the Metal Surface Treatment Industry
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Customization of Professional Pretreatment Spray System For Powder Coating Line
2. Spray cleaner can clean up foreign matter adhering to workpiece surface, and make a close and even phosphorization film on the surface. In order to improve the adhesion between shell surface and film coating, before powder coating, shell surface will be clean, have corrosion resistance.
3. Our equipment, which is based on advanced technology of internal and external professional companies, is designed according to user's actual situation.
4. Each section is composed of spray booth shell and spray system, and has a reservoir. In addition, there may be heating device by user's situation.
There are various types of spray pretreatment methods used in coating production lines, and some of the common ones include:
| Degreasing | Before applying any coatings, spray cleaners are employed to treat the workpiece surface. This treatment removes contaminants and prepares the surface for subsequent processes. |
| Phosphating | Phosphating is a chemical pretreatment process where a phosphate solution is sprayed onto the workpiece's surface. It creates a thin, adherent phosphate coating that improves the coating's adhesion and corrosion resistance. |
| Rinsing | After each pretreatment stage, the workpiece is typically rinsed with water to remove any remaining cleaning or pretreatment chemicals. |
| Surface Conditioning | Some systems feature a conditioning step where abrasive media is used to texture the surface, improving adhesion particularly for certain materials. |
| Drying | To prepare for coating, workpieces are dried to eliminate moisture, which is essential for achieving a successful and durable coating application. |