The process of physical or chemical treatment of the oxide film after anodizing aluminum alloy, reduce the porosity and adsorption capacity of the oxide film in order to seal the dye in the micropores and at the same time improve the corrosion resistance, wear resistance and other properties of the film. The sealing of oxide film basically uses three processes, such as heat sealing, cold sealing and medium temperature sealing, but currently there is a trend of expanding medium temperature sealing.
READ MORE