Aluminum profiles are generally divided into two types of surface treatment: chemical sandblasting and sandblasting. Chemical sand is a step of surface treatment before oxidation of aluminum profiles.Sandblasting is the use of industrial aluminum profiles through a sandblasting machine. The sandblasting machine spews very fine sand particles to hit the small pits on the surface of the aluminum profile. To the naked eye, it looks like the matte effect of the sand surface, which is milder than the bright appearance.There are different numbers of objects in the sand, the more eyes, the finer the sand.

Eigenvalue alumina

Sandblasting is a physical phenomenon, so the cavity of the sand cannot be sandblasted, while chemical sand is the reaction of reagents and aluminum, and any surface will produce a uniform sand surface effect.

As for why many people like sand aluminum profiles, there are the following reasons：

1.Matte materials make people feel more gentle and low-key.

2.Some industrial fields are not suitable for reflective materials.

Sandblasted alumina profile

3.Aluminum profiles treated with sand surface can be covered with extruded grains (extruded aluminum profiles will have extruded particles).

4.The sand surface can remove tiny burrs/bumps on industrial aluminum profiles.

5.The sand surface can also remove the oxide film on the surface of industrial aluminum profiles, so the sand surface treatment must be carried out before oxidation.

Generally speaking, the choice of surface treatment is still based on personal preferences. Some people still like bright oxidized surfaces that feel clean and fresh.These two treatment methods have no effect on the later anodizing treatment, and the oxide film still has wear-resistant and corrosion-resistant effects.