5052 aluminum coil sheet surface treatment
5052 aluminum coil sheet is widely used in life, especially in the construction industry. As people's requirements are getting higher and higher, the appearance of aluminum plates is getting more and more attention. Now many manufacturers will perform surface treatment on aluminum sheet plates to improve aesthetics. At present, the commonly used surface treatment methods of aluminum plates are mainly the following five types.
1. Powder electrostatic spraying
Electrostatic spraying uses the principle of high voltage electrostatic corona electric field. The metal diversion cup on the spray gun head is connected with high voltage negative electricity, and the coated workpiece is grounded to form a positive electrode. A strong electrostatic field is formed between the spray gun and the workpiece. When the carrier gas (compressed air) sends the powder paint from the powder supply barrel to the deflector cup of the spray gun through the powder pipe, a dense charge is generated around it, and the powder is negatively charged. Under the action of electrostatic force and compressed air, The powder is evenly adsorbed on the workpiece, and after heating, the powder is melted and solidified (or plasticized) to form a uniform, continuous, smooth and smooth coating film. The main feature is to enhance the corrosion resistance of aluminum plates. For some acid and alkali salts, this aluminum plate is superior to oxidized and colored profiles.
2. Electrophoretic coating
Electrophoresis is one of the most effective methods for coating metal workpieces. Electrophoretic coating is to immerse a conductive object in an electrophoretic coating tank with a relatively low concentration of water and dilute it as an anode (or cathode), and another corresponding cathode (or anode) is provided in the tank. After connecting DC power for a period of time, a special coating method that deposits a uniform and fine coating film that is not dissolved by water on the surface of the coating object. The electrophoretic coating process is accompanied by four chemical and physical changes, namely electrolysis, electrophoresis, electrodeposition, and electroosmosis. This method of treatment is currently the most used in Japan. After such treatment, the surface of the aluminum sheet is smooth and the corrosion resistance is also enhanced.
3. Matte treatment
The pattern aluminum plate itself is very bright, but in our lives, interference bright spots will appear in a certain environment. The use of frosting can solve this problem very well, making the surface of the aluminum plate silky and silky. People's favorite.
4. Multi-tone surface treatment
In the past, the traditional color aluminum plates could no longer meet the needs of some designers. In order to make the aluminum plates better used, various color treatments have appeared to make the colors of the aluminum plates more perfect. The most important points are all It needs the treatment after polishing and oxidation to get the best effect.
5. Plasma-enhanced electrochemical surface ceramicization
This is the advanced science and technology used. The aluminum plate after this treatment is of excellent quality. Although the cost is higher, it is a penny. The most important thing is that this aluminum plate can also carry out a series of color matching.
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