Phosphating is a commonly used pretreatment technology. In principle, it should belong to chemical conversion film treatment. It is mainly used for phosphating on the surface of steel, and non-ferrous metals (such as aluminum and zinc) can also be phosphating.

Therefore, it is necessary to understand the structure, composition and treatment characteristics of aluminum alloy anodizing treatment. It is very widely used and plays an unparalleled role in some treatment methods.

According to the International Aluminum Association, in May, the global output of original aluminum was about 5.744 million tons, an increase of 3.63% on a month basis, and 5.543 million tons in April; The year-on-year growth was 5.78%, and the output in May last year was 5.43million tons.From Janua

1. Anodic oxidation: on the surface of aluminum, a layer of alumina would be produced through electrochemical principle. This oxide film has special properties such as protection, decoration, insulation and wear resistanceTechnical features:1. Strength of the lift,2. All colors are available, excep