How to Anodize Aluminum Heat Sink?

  • 11-19-2019

As we all know, with the rise of China's industrial development, the metal surface treatment technology on the market can be said to be a hundred schools, let alone divided into categories. There are many metal surface treatment technologies that are more popular nowadays, such as electroplating, spraying, polishing, anodizing, etc. In terms of oxidation technology, it is currently the most widely used and most successful.

 

GUANG YUAN ALUMINIUM is a large professional manufacturer of aluminum heat sink in China for 30 years. We have 30 extrusion press production machines with annual production capacity is 150,000MT.

 

For the aluminum heat sink, the surface corrosion resistance is not strong, must be surface treated by anodizing to increase the corrosion resistance, wear resistance and appearance of aluminum. Here is the anodizing process: degreasing (chemical degreasing, electric degreasing), descaling, anodizing, coating protective film (grease or special protective agent), there should be a cleaning process between the processes. No electricity is required during the oxidation process (but heating is required, generally about 150 degrees).

 

The film obtained after oxidation is normally silver (related to the material composition). It has a slight corrosion resistance, but it can improve the extinction ability.

 

The effect of electron loss of matter is called oxidation; on the contrary, the effect of electrons is called reduction. The narrowly defined oxidation reaction refers to the combination of a substance and oxidation; the reduction reaction refers to the effect of the substance losing oxygen. The oxidation value increases upon oxidation; the oxidation value decreases upon reduction. Both oxidation and reduction refer to reactants (molecules, ions or atoms).

 

After extrusion of aluminum heat sink, the surface corrosion resistance is not strong, must be surface treated by anodizing to increase the corrosion resistance, wear resistance and appearance of aluminum.

 

Aluminum heat sinks are widely used in industries such as machinery, automobiles, wind power, construction machinery, air compressors, railway locomotives, and household appliances, etc.

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