Do I have to pretreat my workpieces for painting with a roll spray machine?

Roll spraying machine is a coating machine in which the workpiece is mounted in a drum and sprayed with a gun while the drum is rotating, and all workpieces are evenly coated and dried. Do I need a pre-treatment to paint my workpieces with a roller spraying machine? The answer is yes.

The quality of the coating will be influenced by the surface treatment, the application of the coating and the coating itself. Surface treatment refers to the pre-treatment of the workpiece for painting. Paint application is the process of coating the workpiece with a roll-on spray machine. This means that the necessary pre-treatment will make the quality of the coating of the workpiece by the roller spraying machine better.

How does the pre-treatment affect the quality of the workpiece painted by the roll spraying machine?

1. Improve the adhesion of the coating to the surface of the material, when the workpiece is attached to some oil, grease, these pollutants will make the surface tension becomes very low, so that the coating can not fully wet the workpiece, resulting in poor adhesion, the consequences will cause the whole film off or produce a variety of appearance defects, so the workpiece must be completely clean of pollutants on the surface before using the roller spray machine coating.

2. Improve the anti-corrosion protection ability of the coating on the workpiece. After the workpiece rusts, the rusting product contains very unstable ferric acid, which will still make the rusting expand and spread under the coating, leading to the rapid destruction of the coating and loss of protection function. If the coating is applied by rolling spraying machine after rust removal treatment, the reliability of the coating protection will be greatly improved.

3. Improve the flatness of the substrate surface, after the rough surface is painted, the gloss of the coating will be affected by the unevenness of the surface and become dull, so the surface can be made flat by the surface treatment method before spraying the workpiece with the roll-painting machine.

The pre-treatment has a great impact on the coating of the workpiece, not only the coating of the workpiece by the roll spraying machine, but also the coating using any coating process or equipment, the pre-treatment of the workpiece is very important and will directly affect the coating quality and life of the workpiece.Translated with www.DeepL.com/Translator (free version)