There is a layer of coating on the surface of the alumi […]
There is a layer of coating on the surface of the aluminum coil, and the coating plays an important role in "anti-corrosion". Now let's talk about how the anti-corrosion work of aluminum coils is done?
Various paints can be used for brushing, as long as it is not a paint with poor leveling. roller coating sheet This step is mainly used to allow the paint to penetrate into the pores of the metal surface and enhance the metal adhesion.
(2) Scratch coating:
In this step, the requirements should be higher, and the paint with high liquid purity and high viscosity should be used to solve the common problems of the paint (cracking, peeling, rolling, etc.).
(3) Dip coating:
Dip coating is a traditional coating method, which is easy to cause air pollution. Please remember not to use volatile coatings.
(4) Rain coating:
Flow coating is to spray the paint onto the surface of the coating. Although the operation is simple and the production efficiency is high, the flow coating consumes more than the dip coating, which will cause the problem of dip coating, so we must pay attention to it.
The advantage of spraying is that the thickness of the coating is uniform, the appearance is smooth, and the production efficiency is high.