Anodic oxidation, mainly of aluminum, is the use of electrochemical principles to generate a layer of Al2O3 (aluminum oxide) film on the surface of aluminum and aluminum alloys. This oxide film has special characteristics such as protective, decorative, insulating and wear-resistant.
Author: Robby
Anodic Oxidation:
Anodic oxidation, mainly of aluminum, is the use of electrochemical principles to generate a layer of Al2O3 (aluminum oxide) film on the surface of aluminum and aluminum alloys. This oxide film has special characteristics such as protective, decorative, insulating and wear-resistant.
Process Flow.
Single color, gradient color: polishing/sandblasting/drawing→degreasing→anodizing→neutralizing→dyeing→sealing→drying
Two-color:
①Polishing/Sandblasting/Drawing→Degreasing→Masking→Anodizing1→Anodizing2 →Sealing→Drying
②Polishing/sandblasting/drawing→degreasing→anodizing1 →laser engraving→anodizing2 →sealing→drying
Technical Features.
1、Improve the strength;
2、Achieve any color except white;
3, realize nickel-free sealing holes, to meet the requirements of Europe, the United States and other countries on nickel-free.
Technical difficulties and key points for improvement:
The yield level of anodizing is related to the cost of the final product. The focus of improving the oxidation yield lies in the suitable amount of oxidizing agent, suitable temperature and current density, which requires structural parts manufacturers to explore and seek breakthroughs in the production process.