Changshu aluminum surface treatment takes aluminum or aluminum alloy products as anodes, which are placed in electrolyte solution for power on treatment, and the process of forming alumina film on its surface by electrolysis is called anodizing treatment of aluminum and aluminum alloy.

Changshu aluminum surface treatment after anodizing, the aluminum surface can produce several microns - hundreds of microns of oxide film. Compared with the natural oxide film of aluminum alloy, its corrosion resistance, wear resistance and decoration have been significantly improved.

The principle of Changshu aluminum surface treatment aluminum anodizing is essentially the principle of water electrolysis. When the current passes, the following reactions will occur: on the cathode, H2 will be released according to the following reactions: 2h + + 2e → H2, on the anode, 4OH - 4E → 2H2O + O2. The precipitated oxygen is not only molecular oxygen (O2), but also atomic oxygen (o) and ionic oxygen (O-2). It is usually expressed as molecular oxygen in the reaction.

After Changshu aluminum surface treatment, the aluminum as anode is oxidized by the oxygen precipitated on it to form an anhydrous Al2O3 film: 2A1 + 3 [O] = A12O3 + 1675.7kj. It should be pointed out that not all the generated oxygen acts with aluminum, and part of it precipitates in gaseous form.