How is aluminum oxidized

1, degreasing treatment: before the aluminum profile treatment, the aluminum profile products should be degreased, in order to remove the protective oil layer on the surface of the aluminum profile, to ensure the uniformity of the surface in the post-treatment.

2. Acid etching treatment: After degreasing aluminum profiles, it is necessary to carry out acid etching treatment to remove the oxide on the surface of aluminum profiles.

3, alkali etching treatment: after the acid etching treatment to carry out alkali etching treatment, the purpose is also to remove the oxide on the surface of the aluminum profile and the indentation left in the extrusion process.

4. Mixed acid treatment: After acid and alkali corrosion, there will be a residual ash layer of mixed elements on the surface of the aluminum profile, which must be removed by mixed acid to reveal the essential color of the aluminum profile.

Precautions for aluminum oxidation treatment

The unqualified workpiece is fixed to the fixture and anodized with aluminum, then anodized for 2 to 3 minutes according to the method of anodizing aluminum in aqueous sulfuric acid solution. Once the film has softened and peeled off, wash it slightly with rye and ammonia. When the water comes out, it can be anodized again.

Aluminum-cesium oxide technology, which requires washing the workpiece with an organic solvent (characteristic: clear, colorless liquid) before transferring it to a heat treatment or welding process to remove surface oil, is common. The surface of the workpiece is formed because it is impossible. A coking oil-based sintering layer (the process of transforming a powder material into a compact object) that is difficult to remove with organic solvents and causes localized corrosion when immersed in rye.