The introduction of sealing treatment on the surface of industrial aluminum profile

After anodizing, the surface of industrial aluminum profiles will form micropores. In the process of application, they are simply oxidized and corroded. After anodizing, they need to be sealed. After anodizing, the sealing method of industrial aluminum profiles generally adopts the cold air process (the cold sealing process comes from Europe). Sulfuric acid anodizing usually uses 10-20% H2SO4 as the electrolyte, and the working temperature is 15-20 ℃. The current density is 1-2.5a/dm2, and the electrolysis time depends on the film thickness, generally 20-60min. DC is the most widely used power source, and the applied voltage varies according to the conductivity, temperature and aluminum content of the electrolyte, generally 15-20v. The process parameters have a significant impact on the function of the membrane.