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The aluminum shell of power lithium-ion battery is generally made of 3003 aluminum alloy as an important material, because the aluminum shell of power lithium-ion battery made of this material has the characteristics of explosion-proof, high-temperature resistance and corrosion resistance. The manufacturing process of aluminum shell of power lithium-ion battery generally requires color treatment, but many people do not know what the color treatment process is. Next, technicians from Asian mainland will explain the color treatment process of aluminum shell of power lithium-ion battery for you:

Step 1: Surface pretreatment

Clean the aluminum surface of the power lithium-ion battery by chemical or physical methods to expose the pure substrate, so as to obtain a complete and dense artificial oxide film. Mirror or matt (matt) surface can also be obtained by mechanical methods.

Step 2: anodic oxidation

Under certain technological conditions, the aluminum shell of power lithium ion battery with surface pretreatment is anodized on the surface of the substrate to form a dense and porous strong adsorption layer AL203.

Step 3: seal the hole

The pores of the anodized porous oxide film are sealed, which improves the anti-pollution, corrosion resistance and anti-wear performance of the oxide film. The oxide film is colorless and transparent. Before using a strong adsorption oxide film to seal the hole, the metal salt is adsorbed and deposited on the film hole, which can make the aluminum shell of power lithium ion battery appear natural color (silver white), such as black, copper, gold and stainless steel.

This is the end of the coloring process of the aluminum shell of the battery. Our aluminum shell battery is colored. The important thing is to make the surface of the aluminum shell more beautiful and not fade after coloring the aluminum shell of the power battery. We have discussed the surface treatment technology of the aluminum shell of the power lithium ion battery. You can understand the combination.

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