Anodizing is an electrochemical process that creates a strong and durable ceramic layer on the surface of aluminum. Anodized aluminum plate is resistant to corrosion, UV and fingerprint. The anodized surface is clear and available in a variety of colors by electrolytic coloring. The surface of the anodized aluminum sheet maintains its metallic appearance and looks harmonious with any item.

The chemical process is similar to the chemical reaction equation that occurs during the anodizing of acidic electrolyte:

Anodizing process :2Al+3H2O→Al2O3+6H++6e-

Dissolution process :Al2O3+6H+→2Al3++3H2O

Cathode process :6H++6e-→3H2

The anodic oxidation process can produce oxide layers with various properties. Therefore, according to different types of anodizing processes, corresponding oxide layers can be produced. Appropriate thickness, decorative or functional, transparent or opaque, colored or non-colored, wear-resistant or electrically insulated types can be obtained. The thickness of anodic oxide film increases with the increase of temperature. When anodizing, the thickness of the film can reach 20 microns, regardless of whether it is plated on both sides of the anode.

Advantages of anodized aluminum plates

1. Good processing performance

Anodized aluminum plate decoration performance is strong, moderate hardness. It can be easily bent and formed and carried out continuous high-speed stamping, and can be directly processed into products without complex surface treatment, which greatly shortens the production cycle and reduces the production cost.

2. Good weather resistance

The anodized aluminum plate with standard thickness oxide film (3μm) is used indoors for a long time without discoloration, corrosion, oxidation and rust. The anodized aluminum plate with a thickened oxide film (10μm) can be used outdoors and will not change color when exposed to sunlight for a long time

3. Strong metallic feel

The surface hardness of anodized aluminum plate is high, reaching the gem grade, and the scratch resistance is good. The surface is not painted, retains the metal color of the aluminum plate, highlights the modern metal sense, and improves the product quality and added value.

4. High fire resistance

No paint or any chemicals on the surface. It does not burn at 600 ° C, does not produce toxic gases, and meets the requirements of fire protection and environmental protection.

5. Strong stain resistance

It leaves no fingerprints or stains, is easy to clean, and does not produce corrosion spots.

6. Strong applicability

Anodized aluminum plate is widely used, such as metal aluminum ceiling, curtain wall aluminum plate, aluminum plastic plate, fire board, honeycomb aluminum plate, aluminum plate, electrical board, cabinet board, furniture board, etc.