Now with the development of aluminum processing, the surface treatment of aluminum alloy is represented by anodization. Anodizing is more and more concerned by the mobile phone industry. The thickness of the oxide film obtained by the treatment is generally 5-20 um, and the thickness of the hard anodic oxide film can reach 60-2500 um. Why do so many mobile phone giants prefer anodized aluminum coil?


        Higher hardness
  The hardness of the anodised aluminium coil is much higher than that of the aluminum substrate. The anodized film not only has a relatively high hardness, but also has good wear resistance. In particular, the surface porous oxide film has the function of adsorbing a lubricant, and can further improve the surface resistance. Grinding.
        2. Good corrosion resistance
  Many metals are easily corroded by sweat, but the anodized film is more resistant to corrosion because it is an oxide and is not electrically conductive, so it is slower to sweat even if it is wet.
       3. Strong adsorption capacity
 The anodized film of the anodized aluminium coil is a porous structure and has a strong adsorption capacity. Therefore, filling the holes with various pigments and resins can further improve the protection, insulation, wear resistance and decorative properties of the aluminum product.
      4. Very good insulation
  The anodized film of the anodised aluminum coil has no metal conductive properties and becomes a good insulating material.