Metallic matrix surface processing method

Abstract

A metallic matrix surface processing method comprises steps as follows: a naturally-colored anodic metallic matrix is provided; the surface of the metallic matrix are divided into a plurality of processing areas corresponding to different colors of a pattern according to the pattern required to be formed on the metallic matrix, and the plurality of processing areas are divided into colored processing areas and an uncolored processing area according to the colors; an oxidation film on one colored processing area is stripped through laser engraving; the metallic matrix is subjected to colored anodizing processing, and a colored oxidation film with the corresponding color is formed on the colored processing area after the oxidation film is stripped; oxidation film stripping and colored anodizing processing are repeated, so that colored oxidation films corresponding to the colors are formed on the other colored processing areas; the uncolored processing area is subjected to laser marking to obtain the appearance with different gray and black tones; the metallic matrix is subjected to mechanical polishing, and the flatness of the metallic matrix is improved. According to the method, the process is simpler, and colorful patterns can be formed on the surface of the metallic matrix.

Description

technical field [0001] The invention relates to a metal substrate surface treatment method, in particular to a metal substrate surface treatment method which forms multiple colors through multiple anodic and dyeing treatments. Background technique [0002] Alloy materials such as aluminum and titanium have the advantages of high strength and light weight, and are widely used in aviation, electronics, communications and other fields. In order to further improve its surface quality and visual effect, it is usually achieved by coloring or anodizing process. The pre-anodization treatment usually includes processes such as alkali biting, chemical sanding, and chemical polishing, and the post-anodization treatment includes processes such as dyeing and sealing, which makes the surface treatment more complicated. In addition, the thickness of the oxide film obtained from the surface treated by the above process is uniform, and it is difficult to obtain patterns of various colors. ...

AI Technical Summary

Problems solved by technology

Anodizing pre-treatment usually includes processes such as alkali biting, chemical sanding, chemical polishing, etc., and anodizing post-treatment includes processes such as dyeing and sealing, which makes the surface treatment more complicated

In addition, the thickness of the oxide film obtained from the surface treated by the above process is uniform, and it is difficult to obtain patterns of various colors

If you want to obtain a variety of color patterns, you need to cover, dye, seal and other processes many times, which increases the processing flow.

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