Can acid sand oxidation cover the surface grain of aluminum?
Of course. According to the process steps of acid sand oxidation, it can be seen that acid sanding agent forms slight corrosion on aluminum surface, which is similar to sanding effect and can change the morphology and roughness of aluminum surface. Therefore, acid sand oxidation can cover the surface lines of aluminum. Sand blasting oxidation is an additional step of sand blasting before oxidation of aluminum profiles after aging.