18th of October ,2023

Introduction to aluminum surface treatment process

It can form a protective layer of a protective body on the surface of the product after being treated with mechanical and chemical methods. It can reach a stable state in nature, increase the body's corrosion resistance and increase the beauty of the product, thereby enhancing the value of the product. The choice of surface treatment types must first start from the perspective of the use environment, service life, and artificial appreciation. Of course, economic value is also the core of consideration.


The surface of the chromium-chromium to form a chemical converter film, the thickness of the membrane layer is 0.5-4um. This layer of conversion membrane has good adsorption and is mainly used as the bottom layer of painting. The appearance is golden yellow, aluminum color, green, etc. This conversion membrane has good conductivity and is the best option for electronic products, such as internal conductivity bars and magnetic electrical equipment. This membrane layer is suitable for all aluminum and aluminum alloy products. However, the converter membrane is soft and not wear -resistant, so it is not conducive to the use of product external parts.

Anode oxidation

Common anode oxidation technology is brushed, brushed, brushed surface colors, brushed surface dyeing, fog surface drawing (can be dyed into any color system). Polish the color of the face, the color of the fog, polishing the bright surface dyeing, and the polishing the fog dye. Spray the noodle color, spray the fog surface color, and spray sand and dye. The above plated species can be used on lighting equipment.

Aluminum electroplating process

It has the advantages of good conductivity, fast heat transfer, light proportion, and easy to form. However, aluminum and aluminum alloy have low hardness, abrasion resistance, easy to occur in crystal corrosion, not easy to weld, and other disadvantages, which affect the scope of use. Therefore, in order to avoid strengths and avoid weaknesses, in modern industries, this problem was solved with electroplating.

Nickel plating (nickel nickel, sand nickel, black nickel), silver -plated (silver, thick silver), galvanizing, galvanized (color zinc, black zinc, blue zinc), copper -plated Copper, coke copper, copper), chrome (white chromium, hard chromium, black chromium) and so on.

Coating of aluminum

The coating is divided into immersion, spraying, coating, rolling and brushing, etc. Among them, it is mainly immersed and sprayed. On the surface, an organic coating of transparent or various colors is formed. Among them, cathode electricity is a new process developed in the 1970s and the main process in the immersion industry. The advantages of good erosion resistance, strong color resistance, and good combination. Spraying is divided into powder paint and liquid painting, where static coating is currently more popular in the industry.

Aluminum chemical plating

Chemical plating is an oxidation and reduction effect that occurs in the same solution when passing without current (no external power), so as to enable a coating method that is stored on the surface of the parts on the surface of the part. Therefore, chemical plating can be described as a process of depositing metal, controllable, and catalytic chemical reduction process

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