1, pre-oxidation: oxidation treatment can increase the corrosion resistance and wear resistance of aluminum plate surface and form an oxide layer. The oxide layer can protect the aluminum plate from further oxidation and improve the appearance quality of the aluminum plate. Therefore, in some cases that require better corrosion resistance and higher appearance requirements, it is a common choice to carry out oxidation treatment first.
2. Wire drawing first: Wire drawing is a mechanical processing method, which produces fine lines and grains by stretching aluminum plates. This treatment can increase the surface hardness and texture of aluminum plate and make it more decorative and beautiful. Therefore, in some occasions where it is necessary to improve the appearance, texture and decorative effect of aluminum plates, drawing first is a common choice.
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