Color steel plate has the characteristics of light weight, beautiful appearance and good corrosion resistance, which is widely used in construction, shipbuilding, automobile manufacturing, furniture, electrical appliances and other industries. Want to ask what color steel plate material is the best, of course, is also the color steel plate manufacturer's best understanding. Today we will analyze what color steel plate material.
百盛彩票开户 1. The substrate of color steel plate can choose to produce or hot-dip galvanizing coated steel plate, while the organic coated color steel plate has a good part of corrosion resistance, but there is still a small gap in the organic coating, which can allow air and water to enter, make its base material rusty and unusable, so the steel made of uncoated color base material has short service life, and scratches are easy to spread, resulting in coating peeling. The base material of color steel plate is galvanized steel plate or galvanized alloy steel plate.
2. The production process of color coating is divided into base material pretreatment, chemical conversion film (non organic metal coating) and organic non-metal coating. Some production lines also have post coating process.
百盛彩票开户 3. Substrate pretreatment: if the galvanized steel plate as the substrate does not directly enter the color coating process after production, rust (white rust), dust and other pollution may occur during transportation. If these can not be removed, it will affect the quality and effect of color coating. The quality and physical and chemical properties of the finished product are closely related to the pretreatment. In addition, after galvanizing production, in order to prevent rust and oil, these oils should also be prepared before the production of color coating. Now, the pretreatment method of alkaline degreasing is often used.
4. Chemical conversion film: it has two functions: one is to further improve the antirust ability, the other is to improve the adhesion between the substrate and the coating, and improve the coating performance of the substrate. Generally, there are three steps: first, phosphating, forming a large number of crystals on the metal surface, and then forming a layer of phosphating film on the metal surface with phosphorus containing solution; the other is passivation sealing, the phosphating film still has some holes, chemical reaction with chromate and hole points, forming a protective film. Clean with pure water, and the passivation solution with desalting or deionized water.
百盛彩票开户 5. Organic coating: the organic coating is divided into primer and finish. The primer is not required to be high and can be used for smooth coating. However, in order to ensure production safety, the primer and finish are generally used for reverse coating. Post coating process: the post coating process includes printing, embossing, peeling protective film, lamination, etc., which improves the decorative and protective properties of color steel plate. In addition, some foreign coating processes and leveling and straightening processes are used in cold rolling and galvanizing production lines.