Can aluminum alloy die castings be oxidized?

To put it plainly, aluminum anode treatment is the whole process of air oxidation by this electrolysis method.  In this whole process, the surface layer of aluminum and aluminum alloy profiles is generally converted into layers of air oxide film.  This air oxide film is defensive and decorative.  And some of its other features.  From this definition, the anode treatment of aluminum only includes the whole process of converting into an anode treatment film.

Aluminum alloy castings and castings generally have high silicon moisture content.  Even if ht412 die-cast aluminum special ash remover is used, the anodized film will be dark brown, and it is impossible to obtain a transparent air oxide film without color.  As the water content of silicon increases, the color of the anodized film ranges from light gray to dark gray to gray-black.  Therefore, aluminum alloy casting is not suitable for traditional anodizing.