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What is the difference between natural anode and anodizing?

2024/2/6 9:25:14 click:

Natural anodizing and anodizing are the most commonly used methods in surface treatment technology for CNC machining of metal parts. The natural anode is an electrochemical reaction that uses the oxidation reaction between the material on the anode and the ions in the solution to transfer electrons to the external circuit. This process can generate electric current, cause physical and chemical changes in the anode material, and form a natural oxide layer on the metal surface. In addition, no other artificial treatment methods are required. Anodizing forms an oxide layer on the metal surface through an electrochemical reaction, which can be customized and adjusted according to specific needs.


In terms of composition and properties, the natural anode is made of pure aluminum, pure aluminum alloy, etc. Its main components are aluminum, magnesium, manganese, etc., and the surface appears silvery white or dark gray. Natural color anodes have relatively good plasticity and weldability, are not easy to rust, are corrosion-resistant, and have a relatively long service life.


Natural anodes have the following advantages:

1-Simple processing process

2- Low cost

3- Will not affect the original appearance of the metal surface


The disadvantages of natural anodes are also very obvious. For example, the thickness and quality of the oxide layer are unstable, difficult to accurately control, and will change due to the influence of environment and time.

To sum up, anodizing can control the thickness and color of the oxide layer, which has very good corrosion resistance and wear resistance, and the surface will be more beautiful and beautiful. However, the anodizing process is complex and costly.


Natural anodes are mainly used for corrosion protection in aircraft, ships, automobiles and other fields, as well as anti-corrosion materials in the power industry in the construction industry. Ordinary anodizing is used in most industries.