Aluminium coated sheet is a kind of aluminum product that is widely used at present. It is widely used in machinery and home decoration. Let's discuss its coating construction method:
1, Brushing: Brushing is the earliest, simplest and most traditional manual coating method. It is easy to operate and flexible. It can coat objects of any shape. Except for coatings with fast drying and poor leveling, it can Applicable to all kinds of coatings. The brushing method of painted aluminum sheet metal can make the paint penetrate the pores of the metal surface and strengthen the adhesion of the coating film to the metal. The disadvantages are high labor intensity, low work efficiency, and poor coating appearance.
2, Scratch coating: Scratch coating of painted aluminum sheet is a method of coating with a scraper, which is used for the coating of liquid coatings with high viscosity and 100% solid content. The common defects of the coating film in the blade coating operation are cracking, falling off, rolling, etc., and the thickness of the coating film is difficult to be uniform.
3, Dip coating: Dip coating is also a traditional coating method for aluminium coated sheet. In this method, the object to be coated is immersed in the tank liquid containing the paint, and then taken out, and the excess paint is allowed to drip back into the tank liquid, or the excess paint is thrown off by mechanical methods. The solvent loss of this method is relatively large, and it is easy to cause air pollution. It is not suitable for volatile coatings, and the thickness of the coating film is not easy to be uniform. It is generally used for equipment or workpieces with complex structures.