[China Aluminum Industry Network] After different types of aluminum materials, after the conductive chemical conversion treatment, the difference in appearance color is more obvious than the oxide film obtained by other process recipes. The purity of aluminum is high and the deposition rate is slow. If the purity of aluminum is low, the opposite is true. Therefore, the oxidation needs to be different according to different aluminum materials. To do this, different models of aluminum parts are not allowed to be bundled in the same string, so as to avoid being able to control their respective proper oxidation time.
The advantages and disadvantages of aluminum components can be distinguished in alkaline etching. For example, if the surface of an article after alkali etching has too many gray-black films, or the red film, it must be aluminum with higher silicon content or higher copper content. The chemical conversion of aluminum film should be shortened, otherwise the resulting film will also be difficult to meet the conductive requirements.
The advantages and disadvantages of aluminum components can be distinguished in alkaline etching. For example, if the surface of an article after alkali etching has too many gray-black films, or the red film, it must be aluminum with higher silicon content or higher copper content. The chemical conversion of aluminum film should be shortened, otherwise the resulting film will also be difficult to meet the conductive requirements.
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