Why is the coated aluminum coil highly resistant to corrosio

The surface of the aluminum coil has a coating, called a coated aluminum coil, which plays a most important role - "corrosion protection". coated aluminum coils generally have the following coated methods:



       (1) Brushing
         Brushing can use a variety of coatings, as long as it is not a low leveling coating, this step is mainly to allow the coating to penetrate into the pores of the metal surface, which can enhance the metal adhesion.
       (2) scraping
         In this step, it is required to have a high point, and the coating with high liquid purity and high viscosity should be used as a common defect of the coating (cracking, falling off, rolling, etc.).
       (3) dip coating
         Dip coating is a traditional coating method that is prone to air pollution. Always remember not to use volatile coatings.
        (4) shower coating
         The coating is applied to the surface of the coating. Although the operation is simple and the production efficiency is high, the consumption of the coating is larger than that of the dip coating, which may cause safety and dip dyeing problems.
        (5) spraying