Although the performance of galvanized steel grille is excellent in all aspects, if there are problems in the production process and later storage, it will cause white rust of galvanized steel grille and seriously affect its service life.
Oil on galvanized steel grille to insulate air and zinc. This method is relatively simple, but can play a good role in avoiding rust.
Galvanized steel grille surface paint will be rust-proof, so phosphate coating is suitable. Phosphates adhere tightly to the galvanized surface to form porous structure, which can provide a good foothold for paint.
Three. Chromic acid
When galvanized steel lattice plate is immersed in chromic acid solution, it will form a thin film with low activity. Even if the film is damaged, the surrounding chromate will be dissolved in water to form a new film at the damaged area. It is very useful for avoiding white rust.
In addition to surface treatment of galvanized steel grilles, attention should also be paid to daily storage methods, such as waterproof and moisture-proof storage places, excellent ventilation, small temperature difference, etc. This can prevent galvanized steel grille from white rust.