Recently, many customers have contacted us and asked us about the problems they encountered when using color aluminum sheets, hoping that we can help them. Today, the editor discussed with you the knowledge about the forming steps of color aluminum sheet, hoping to bring inspiration and help to our customers and friends, and let everyone have a deep understanding of it.
There are two main steps before the color aluminum sheet is formed, namely pretreatment and coating. Generally these two steps are also important processes. They have the advantages of aluminum sheets and organic materials, such as high strength, good toughness, and easy processing. Let’s look at these two steps in detail.
1. Pretreatment of color aluminum plate
The substrate pretreatment technology is produced along with the coating technology. It serves the coating technology and lays the foundation for the preparation of excellent coatings. During the production process, some grease and lubricant will remain on the surface of all substrates of the color aluminum sheet, and other substances may be attached during transportation. If these greases and adherents are not removed, the coating and use of the aluminum sheet will be affected. In addition, the cleaned substrate surface requires chemical treatment to form a stable conversion coating that improves substrate corrosion resistance and adhesion to coatings.
2. Coating method
The coating process of color aluminum plate can be generally divided into three types: three coating processes, two coating processes and one coating process. According to the rotation direction of the coating roller and the driving roller, it can be divided into two processes: forward coating and reverse coating. The coating mode in which the rotation direction of the coating roll is the same as the advancing direction of the substrate is sequential coating. Instead, reverse coating. The general coating process can only produce low wet film thickness, and the surface appearance of the coating film produced by this process is not ideal, so this process is not very useful. The reverse coating process is a widely used coating process at present. By adjusting the rotation ratio between the travel speed of the drum and the substrate, a coating film with the desired thickness and smooth appearance can be obtained.
The color aluminum plate has a simple structure, is thin and light, easy to transport, disassemble and assemble, has a long service life, does not reflect light and light pollution, and realizes the unity of energy saving and environmental protection. The absorption rate is low, and the thermal insulation effect is remarkable. The color aluminum plate adopts high-precision gapless bonding technology, which is environmentally friendly and energy-saving, and has a long service life. It is not easy to peel and delaminate even in low temperature and cold areas. Anti-corrosion, sound insulation, fire prevention, anti-aging. It has strong plasticity and can meet the needs of users for various plate types.
