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Changes in the processing of anodized aluminum profiles
Mar 03, 2018

Aluminum profiles are the main structural materials for building doors and windows and curtain walls today, and have a very wide range of applications, but unfinished aluminum profiles are single in appearance and easily corroded in humid atmospheres, making it difficult to meet the high decorativeness and strength of building materials Weatherable requirements. In order to improve the decorative effect, enhance the corrosion resistance and prolong the service life, require the anodized aluminum profile processing. Therefore, anodizing has also become an essential and extremely important process for the production of aluminum profiles.

 

Aluminum surface treatment technology due to different principles, the process is also a big difference, according to the nature of the protective layer and process characteristics, aluminum surface treatment technology can be divided into anodizing, anodizing - electrophoresis, organic coating three categories Among them, the organic coating includes powder coating, fluorocarbon coating and wood grain processing.

 

The anodized aluminum profile processing is probably started in the 1950s, but also many of the earlier appeared in a variety of anodized aluminum products processed by the more prominent feature is the appearance of metal texture is strong, and the performance is obvious  promotion.

 

Most of the aluminum after electrochemical or chemical polishing, and then sulfuric acid solution for anodic oxidation can be higher transparency of the oxide film, the oxide film can absorb a variety of organic dyes and inorganic dyes, which have a variety of bright colors.

 

Anodized aluminum profile processing of this layer of color film is both anti-corrosion layer, but also decorative layer, in some special conditions, you can also look similar to the appearance of porcelain and decorative protective oxide film. Due to the porous nature of the anodized film and its good adsorption capacity, it can be used as a primer for painting and other organic films, allowing the film and organic film to be firmly bonded to the article to increase its corrosion resistance.

 

As the anodic oxidation of the film itself has sufficient stability in the atmosphere, so the anodized aluminum profile can be used on the aluminum surface oxide film as a protective layer, if after a suitable sealing agent filling and sealing, the corrosion resistance It is also good.

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