Can you paint galvanized steel?

First, can the galvanized surface be painted directly

You can spray paint directly, but you need to spray special primer first, and then spray top paint. Galvanized surface painting can not only make the galvanized surface more solid and durable, but also improve the decorative effect of the galvanized surface, and can also extend its service life, but also can make the corrosion resistance of the galvanized surface is improved.

Galvanized surface is generally very smooth, so the paint is generally difficult to attach directly to the above, after a long time, the paint layer is easy to fall off the paint phenomenon, in order to ensure the adhesion and protection of the paint, in the galvanized surface painting, should first spray special primer, and then spray paint, so that the two layers of paint film can better protect the galvanized surface.

Second, what should we pay attention to when painting the galvanized surface

1. before painting the galvanized surface, the dirt, dust, oil and other stains on the galvanized surface should be cleaned with supporting solvents, and the galvanized surface should be polished with fine sandpaper, so that the adhesion between the paint and the galvanized surface is improved.

2. in the process of painting, special primer should be sprayed first, after the primer is sprayed, it also needs to be polished again, and then the top paint can be sprayed, and the color of the two should be as much as possible or similar, so as to avoid the color difference of the paint film, and the decorative effect of the galvanized surface.

3. before painting, it is also necessary to modulate the paint and thinner together according to the correct proportion, and must be modulated evenly. In the process of painting, the thickness of the film must be kept within the specified range, not too thick or too thin, and there can be no leakage or less coating.