Anodizing process
Anodizing process is a metal surface treatment technology, especially suitable for aluminum and aluminum alloys. The main principle of the process is to use aluminum or aluminum alloy products as an anode, put into a specific electrolyte, and form an oxide film on the surface of the product through electrolysis, so as to give it protection, beauty and other characteristics.
anodizing
1. The specific steps of the anodizing process include:
1. Preliminary treatment: polishing and chemical treatment of aluminum or aluminum alloy products to remove oil, fingerprints and other impurities on the surface of the product.
2. Electrolyte preparation: Select the appropriate electrolyte, such as sulfuric acid solution, and prepare enough electrolyte to ensure that the product is immersed in it.
3. Anodizing treatment: Put the treated aluminum or aluminum alloy products into the electrolyte as the anode, and set the corresponding process conditions, such as voltage and current density.
4. Oxide film formation: Through electrolysis, a layer of oxide film is formed on the surface of the product. This process usually requires certain conditions such as time and voltage.
5. Post-treatment: The products formed oxide film are cleaned, dried and other post-treatment to remove the residual electrolyte and impurities on the surface.
6. Quality inspection: Quality inspection of the processed products, such as film thickness, hardness, adhesion and other indicators, to ensure that the quality meets the requirements.
Second, the advantages of anodizing process include:
1. Wear resistance and corrosion resistance: The formed oxide film has high hardness and good wear resistance, which can effectively resist wear and corrosion.
2. Enhance aesthetics: by choosing different electrolytes and treatment methods, oxide films of various colors and textures can be formed on the surface of products to enhance the aesthetics of products.
3. Improve adhesion: the oxide film has good adhesion to the base material, which can effectively improve the corrosion resistance and wear resistance of the product.
4. Low cost, simple process: Compared with other surface treatment technologies, anodizing process cost is low, and the process is relatively simple.
anodizing
Three. Anodizing process limitations include:
1. Limited scope of application: Anodizing process is mainly applicable to aluminum and aluminum alloy products, and may not be applicable to products of other materials.
2. Poor high temperature resistance: the formed oxide film is prone to discoloration and shedding at high temperatures, so it is not suitable for high temperature environment.
3. Poor environmental protection: Some harmful substances are used in the electrolyte, which is harmful to the environment and the human body, so corresponding environmental protection measures need to be taken.
In short, the anodizing process is a surface treatment technology suitable for aluminum and aluminum alloy products, which has the advantages of wear resistance, corrosion resistance, and enhanced aesthetics, but at the same time, there are some limitations. In practical applications, such as the selection of packaging surface treatment process for revolving doors and automatic doors, the appropriate surface treatment technology and program need to be selected according to the specific situation.
