See the main reasons for poor paint adhesion during spray gun spraying?

See the main reasons for poor paint adhesion during spray gun spraying?

When spraying, we often encounter many unsatisfactory effects, such as the problem of paint adhesion, so in order to solve these problems, we certainly need to understand the reasons and solutions. So let's start with the reasons:

【Cause of appearance】

1. The surface is contaminated before painting (such as wax, silicon, oil, water, rust, outflow of welds and air pollution, etc.).

2. Use paints that are not suitable for the substrate or topcoat.

3. Dry spray primer (too high powder content and insufficient resin film-forming material)

4. Insufficient dissolving power with cheap thinners.

5. The coating film is too thin.

【Solution】

1. Thoroughly remove all remaining dirt on the surface of the coated object

2. Select the correct and suitable primer.

3. Good primer spray, avoid dry spray (coarse film)

4. Use a qualified and good thinner. When you encounter the same problem next time, you can follow this method to solve it and help you reduce a lot of problems.