Manufacture method of mirror anode suitable for dyeing

Abstract

The invention provides a manufacture method of a mirror anode suitable for dyeing. The method is characterized in that a product manufactured through the method can realize a mirror effect on the surface of an aluminum material, and is high in compatibility for dyeing and dye, suitable for dyeing of different color tones from light color to deep color, and compatible with most of anodic oxidationdyeing materials on the market, and properly gives consideration to the anti-corrosion property and decoration property of anodic oxidation. The method comprises the following steps: preliminary grinding mirror treatment of aluminum material anodes, pretreatment of anodes, aluminum anodic oxidation, hole micro sealing, post precise grinding of anode, activation of oxidation film, dyeing of oxidation film, and post hole seating treatment of anodes. The manufacture method has the innovation points that mirror grinding treatment is firstly performed on the surface of an oxidation film after anodic oxidation, so that the mirror effect is achieved, then activation and dyeing are performed, the manufacture method is different from the conventional method in which dyeing is firstly performed andthen grinding is performed, the phenomenon of uneven polishing and fading is not required to be worried, most of colors can be achieved according to actual requirements, and the mirror anode has all other advantages of an anode.

Description

technical field [0001] The invention relates to the technical field of metal surface treatment, in particular to a mirror anode manufacturing method suitable for dyeing. Background technique [0002] Anodizing is a main surface treatment method for aluminum materials. In addition to enhancing the protective performance of the substrate, the unique microporous structure of the oxide film can endow the substrate with excellent dyeing performance and significantly improve the decorative properties of aluminum materials. However, anodizing Will reduce the gloss of the substrate to a certain extent. For a long time, mirror anodization (which not only retains the metallic texture of aluminum, but also achieves a crystal-clear luster like glass and a clear reflection like a mirror) has become the technical limitation of anodizing in the field of high-end decoration. The following are two common ones. High-gloss anode production methods, but none of them are perfect solutions. [...

AI Technical Summary

Problems solved by technology

[0002] Anodizing is a main surface treatment method for aluminum materials. In addition to enhancing the protective performance of the substrate, the unique microporous structure of the oxide film can endow the substrate with excellent dyeing performance and significantly improve the decorative properties of aluminum materials. However, anodizing Will reduce the gloss of the substrate to a certain extent

For a long time, mirror anodization (which not only retains the metallic texture of aluminum, but also achieves a crystal-clear luster like glass and a clear reflection like a mirror) has become the technical limitation of anodizing in the field of high-end decoration. The following are two common ones. High-gloss anode production methods, but not a perfect solution

[0003] 1. Realize high-light anode by reducing the anode current density. The common current density is 0.5-1.0ASD. The disadvantage is that it cannot completely solve the loss of light after the anode, and cannot achieve the mirror effect. The lower the ASD, the smaller the loss of light, but it is oxidized at the same time The hardness of the film is reduced, which greatly reduces the protective performance

[0004] 2. The high-gloss anode is realized by secondary precision grinding on the surface after anodic oxidation and dyeing. This method can achieve a mirror effect. The disadvantage is that the requirements for dyeing and dyes are extremely strict, and it is only suitable for dyeing dark colors, and only a few dyes can achieve it. Ideal effect (such as Okuno's Black SGB), not suitable for most dyes, especially light colors, the color will fade seriously after grinding, it is difficult to achieve a uniform surface effect, which greatly reduces the decorative effect