The chemical properties of the aluminum element are very active, and there will be a layer of oxide films on the surface of the aluminum plate, which can prevent the aluminum inside the aluminum plate from being oxidized. The oxidation treatment is carried out on the surface of the aluminum plate to thicken the oxide film on the surface of the aluminum plate, and the corrosion resistance and wear resistance of the aluminum plate are enhanced. Let's take a look at the surface oxidation treatment method of aluminum plate.
1. Surface pretreatment
Before the oxidation treatment of the aluminum plate surface, it is necessary to clean the aluminum plate surface. The aluminum plate surface must be free of dust, residual oil stains, manual handling fingerprints, burrs, scratches, etc., which is conducive to oxidation and coloring.
2. Anodizing treatment
Aluminum plate manufacturers can use chemical oxidation and anodic oxidation when conducting surface oxidation treatment for aluminum plates. The method of chemical oxidation is to place the aluminum plate in a weakly alkaline or acidic solution, and the metal inside the aluminum plate will undergo a chemical reaction, thickening the oxide film on the surface of the aluminum plate.
3. Other anodic oxidation
Oxalic acid anodic oxidation can be conducted by using direct current, alternating current, or alternating and direct current superimposed methods; Chromic acid anodizing: During the oxidation process, the concentration of chromic acid should be analyzed, and chromic anhydride should be added when appropriate.
The above mentioned method is used for aluminum plate surface oxidation treatment. When conducting aluminum plate surface oxidation treatment, the above method can be followed to improve the corrosion resistance and wear resistance of aluminum plate, extend the service life of aluminum plate, and reduce costs.