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Concrete steps for coloring of aluminium rolls

  • Author:Dong Xing
  • Release on:2018-02-02
Today, introduce the concrete steps of the roll. Harbin Dong Xing Aluminum Co., Ltd is a competent and reliable Aluminum coil manufacturer china.

1. pretreatment methods were used to clean the surface, using physical and chemical methods are available, most important is the aluminum plate exposed matrix. It is good for the complete oxidation, the oxide film is also dense. Pretreatment can also use some mechanical processing equipment.

2. anodizing, after and after the treatment of the aluminum coil, makes the matrix anodized, and then produces a dense oxide film.

3. sealing, after anodic oxidation, there will be plenty of film hole oxidation film, sealing is the film hole closed, to prevent pollution. This film is film is transparent, but also with adsorption, so that it will be deposited in the pores of some metal salt, so that you can show some original silver white in appearance, or outside of many colors. This is the color of the aluminum coil steps in the process, we need to pay attention to the change of aluminum coil

Aluminum coils should be normal because aluminum rolls are oxidized to produce dense alumina films and prevent aluminum from reacting with the aluminum.  Harbin Dong Xing Aluminum Co., Ltd could provide you with 3004 aluminum coil on sale.
However, for the surface demanding aluminum coil, how to avoid the white spot on the surface of the aluminum coil and make the finish and brightness better, which is not only related to the processing technology, but also closely related to the later surface treatment technology.

When processing the anodic oxidation of large aluminum coil products, it is found that white spots will appear on the surface after the processing is finished, especially the aluminum oxide coil is obvious. Now we will analyze the reason for this phenomenon.

In fact, the main reason is simple: in the aluminum plate after oxidation is not rinsed thoroughly, led to the formation of white spots on the surface after drying, the solution is to strengthen washing after oxidation, rinse thoroughly with water to choose. At the same time, after washing to protect the surface, try to make products to other product contact, dry naturally. 

It is better to control the surface of the aluminum coil spot not only to pay attention to the product surface problem in product processing, while surface processing also should pay attention to prevention, to strict standards of machining process, machining process to avoid the formation of white spots. White wash, acid cleaning is OK, but to control the concentration, or paint, aluminum barrier contact with oxygen.

If you want to get more information about Harbin Dong Xing Aluminum Co., Ltd, please click Aluminum cladding coil 7072/3003/7072.