The same point: Anodizing is to generate a protective film of aluminum oxide on the surface of the aluminum material, and the dense aluminum oxide film layer generated by artificial methods is used to protect the aluminum material.
      The difference between ordinary anodizing and hard anodizing is the manufacturing process and the performance of the film.
 
      Ordinary anodic oxidation uses a constant voltage method, and the bath temperature is within the range of 18-25 degrees. The oxidized film layer is 6-30 microns, which cannot be made very thick.
      Hard anodizing is generally a constant current method, and the bath temperature is in the range of 0-8 degrees. The oxidized film reaches 50 microns or more, and the hardness and wear resistance are higher.
 
      The difference in surface smoothness is mainly expressed by roughness, which is mainly related to the pre-treatment of oxidation, such as sandblasting, which generally determines the roughness of the anodic oxide film. Whether it is ordinary anodization or hard anodization, the roughness of aluminum will be reduced after anodizing.

 

       Shenzhen Guangyu Precision, aluminum alloy processed products provide surface sandblasting and oxidation processes, regular colors and other color numbers are available.