1. Warped skin
It means that after some cars have been painted with color change, the newly painted paint film will become warped after drying, especially on the sides of each side. The reasons for this are:
The surface of the original paint is too flat and smooth. When sanding before changing the color, these edge parts are often neglected, resulting in the lack of adhesion of the newly painted paint film and warping. (Detecting instrument: adhesion Tester)
When spraying with color-changing paint, the paint film sprayed on the side surface is too thin (testing instrument: coating Thickness Gauge), and the bottom layer is too smooth, which makes the film adhesion poor and causes warping or curling.
After polishing the car and changing the color, if the wax on the surface of the original paint is not effectively cleaned, it is easy to cause warping after spraying new paint.
The remedy for the warped skin is to effectively polish off the local warped skin, wipe it off with a detergent, and then repair it again. The preventive measure for skin warping is that when changing the color again, we must pay attention to the sanding treatment of the side surface, which can prevent it.
2. Uncover
The peeling defect is more serious than warped skin, that is, the paint film can be peeled off in pieces by lifting the edge of the paint film with your fingers. The reasons are as follows:
The surface of the original paint is too smooth, which is caused by improper sanding before changing the color.
The water after the original paint is water-milled is not effectively dried and then sprayed with new paint. (Detecting instrument: drying time Tester)
Before the new paint is sprayed, the oil or wax (referring to the polishing wax) on the surface is not effectively removed and the new paint is sprayed.
For remedial measures for peeling, when peeling occurs locally, the partial peeling can be removed, the bottom layer should be cleaned, and local repairs . When peeling occurs in a large area, it needs to be completely removed and repainted.
