Preparation method of etched anodic oxidation aluminum plate

Abstract

The invention discloses a preparation method of an etched anodic oxidation aluminum plate. The preparation method comprises the steps of acid etching polishing treatment or alkali etching matte treatment, anodic oxidation, cleaning, coloring, water washing, hole sealing and the like. According to the preparation method, anodic oxidation treatment is carried out on an aluminum sheet material whichis already subjected to matte or polishing treatment to obtain a bright, clean and highly transparent oxide film layer. By means of the oxide film layer, the surface state and performance of the aluminum plate material are changed, the corrosion resistance, the film bonding capacity and the hardness of the aluminum plate material are improved, and the surface of the aluminum plate material is protected. Moreover, the transparency of the oxide film layer is high, so that etching lines of the etched aluminum plate are clear, and then eye-catching surfaces with a plurality of colors can be obtained by means of coloring, and a better decoration effect is realized. The aluminum plate treated by the surface treatment process is immune from discoloration, fading, corrosion and film layer fallingafter being used for 1-2 years, thereby being long in service life, safe and environmentally friendly.

Description

technical field [0001] The invention relates to the technical field of metal surface treatment, in particular to a method for preparing an etched anodized aluminum plate. Background technique [0002] Aluminum is one of the most widely used metal materials among non-ferrous metals. It has a series of powerful physical, chemical and processing properties, and it has a wide range of uses; high-tech products, high-end building decoration materials, transportation , aerospace, lamps and lanterns lighting and electronic and electrical products, etc. The aluminum plate through ordinary spraying, composite oxidation, and crystal swimming surface treatment process cannot achieve the purpose of highlighting the etching lines because of the lack of transparency of the coating, and has no three-dimensional decorative effect, followed by poor adhesion and poor weather resistance. Film bursting is easy to occur during use, and discoloration, fading, corrosion, and coating peeling are pr...

AI Technical Summary

Problems solved by technology

The aluminum plate through ordinary spraying, composite oxidation, and crystal swimming surface treatment process cannot achieve the purpose of highlighting the etching lines because of the lack of transparency of the coating, and has no three-dimensional decorative effect, followed by poor adhesion and poor weather resistance. Film bursting is easy to occur during use, and discoloration, fading, corrosion, and coating peeling are prone to occur after 1 to 2 years of use. Generally, spraying and crystal swimming decorative aluminum panels will have surface coatings in the first few months after they are newly installed. Odor, can not solve the problem of environmental protection and has a short service life, and in the process of use, due to the insufficient hardness of the coating, it is easy to cause scratches and scratches, which has caused certain difficulties for the installers