Do you know how color-coated rolls are painted?
Only by using appropriate painting methods can we produce color-coated rolls that meet the requirements. In order to ensure good adhesion between the paint and the surface of the galvanized sheet, the surface of the color-coated coil needs to be chemically treated. First, clean the oil and dirt attached to the surface of the color-coated roll, otherwise, it will affect the adhesion of the coating, so degreasing and cleaning are required.
Then chemical conversion treatment is carried out. The usual method is to produce a layer of composite oxide on the galvanized surface or to perform phosphate treatment. The former has good paint film adhesion, while the latter has good corrosion resistance. After chemical conversion treatment, it must be fully dried and painted in a moisture-free state.
Appropriate painting methods can produce color-coated rolls that meet the requirements. In order to ensure good adhesion between the paint and the surface of the galvanized sheet, the surface of the color-coated coil needs to be chemically treated. First, clean the oil and dirt attached to the surface of the color-coated roll, otherwise, it will affect the adhesion of the coating, so degreasing and cleaning are required.
For chemical conversion treatment, the commonly used method is to produce a layer of composite oxide on the galvanized surface or to perform phosphate treatment. The former has good paint film adhesion, while the latter has good corrosion resistance. After chemical conversion treatment, it must be fully dried and painted in a moisture-free state.