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What is anodizing?

July 20, 2023

Anodizing is a common surface treatment technology that improves corrosion resistance, hardness and decoration by forming an oxide film on the surface of aluminum and its alloys. Anodizing is widely used in the manufacture and processing of aluminum products.

The process of anodizing: Anodizing is achieved by using aluminum products as anodes and placing them in an electrolyte for electrolytic treatment. In the electrolyte, by applying current and controlling the electrolysis time, a dense oxide film is formed on the surface of the aluminum. This layer of oxide film has excellent corrosion resistance and hardness and can protect the aluminum material from the erosion of the external environment.

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Advantages of anodizing: Anodizing can improve the corrosion resistance, hardness and decorative properties of aluminum products. After the oxide film is formed, it can effectively prevent the contact between aluminum and the external environment, and reduce the occurrence of oxidation and corrosion. At the same time, the hardness of the oxide film is higher, which can increase the scratch resistance and wear resistance of aluminum products. In addition, anodizing can also be dyed or coated on the oxide film to increase the decoration and aesthetics of aluminum products.

Application fields of anodizing: Anodizing is widely used in the manufacture and processing of aluminum products. In the fields of aerospace, automobile, construction, electronics, etc., anodizing is used in the manufacture of aircraft parts, automobile bodies, building doors and windows, electronic equipment casings, etc. In addition, anodizing is used in the manufacture of consumer goods such as decorations and household items.

Anodizing is a common surface treatment technology that gives aluminum products better performance and appearance. With the continuous improvement of performance requirements for aluminum products, anodizing technology will continue to be widely used and developed, providing more possibilities for aluminum products in various fields.