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.

In order to improve the life of air conditioner, to reduce power consumption, to improve ventilation quality and improve refrigeration effect, a variety of aluminum for air conditioner have been developed. Here below is the main classification of aluminum for air conditioner heat exchange.

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.

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