What is the process of painting the surface of sheet metal processing?

The technological process of painting the surface of sheet metal processing generally includes the following steps:

1. Base treatment: The base of sheet metal processing products needs to be derusted first, such as sandblasting and phosphating.

2. Primer coating: Primer is sprayed on the surface of the sheet metal to improve the adhesion and durability of the coating.

3. Intermediate coating: After the primer is dried, it is sprayed on the surface of the sheet metal with intermediate coating to increase the color.

4. Topcoat painting: After the primer is dried, the topcoat is sprayed on the surface of the sheet metal to provide color and luster.

5. Drying: put the metal plate into an oven and let the coating dry and solidify.

6. Polishing: Polishing the surface of sheet metal parts with a polishing machine to improve the gloss and surface quality.