The surface of most workpieces needs to be painted, and most of them can get a good coating to improve the quality of the workpiece. However, sometimes it is felt that the painting process is not very smooth, which may cause surface roughness after painting, especially fluorocarbon paint. Why?

The workpiece was processed with fluorocarbon paint, but when the paint film dries, it showed a rough and uneven phenomenon, resulting in a rough surface. There are many reasons that lead to similar problems. It is necessary to check the root causes in order to take appropriate measures to solve them.

One of the reasons may be that the ambient temperature of the painting processing area is too high, so that the solvent and the diluent used for the painting are volatilized so fast that when the atomized coating reaches the surface of the steel, it is already particleized, and of course it cannot be leveled.

The second reason may be that the pressure set by the painting processing equipment is too high, which causes the atomization of the paint to be too intense, and also causes the evaporation rate of the solvent to be accelerated. When the paint cannot level on the surface of the workpiece, it will show a rough surface.

The third reason is that the distance between the nozzle and the surface of the steel material during the painting process is too large, causing dry spray, whether it is manual painting or automatic painting. In addition, there is a possibility that the painting environment and working conditions in the automatic painting room are unreasonably adjusted, so that the paint spray is sprayed in the paint room, and the paint mist particles fall on the surface of the paint film which has not yet dried, resulting in a rough paint film.