Aluminum die casting parts is wildly used in industry application as structural part, heat sink, etc.
If aluminum die casting parts can done surface treatment with self color or other colors?
As we know, aluminum die casting material is something aluminum-silicon alloy. Silicon is nonmetal material and it is can not be oxidized. So only base material aluminum can be oxidized.
During oxidizing surface treatment, aluminum die casting parts surface can appear a layer of black powder. So Al-Si aluminum parts oxidized surface can not provide enough protection due to the porous structure.
So if we do not have strict surface protection requirement, we can choose black oxidizing surface treatment, rather than natural color or other color, especially with deep machining for the surface.
