Color coated board knowledge

Cai Tuban, also known as the color plate, color plate. The color coated steel plate is made of cold-rolled steel plate and galvanized steel plate as a substrate, subjected to surface pretreatment (degreasing, cleaning, chemical conversion treatment), coated by a continuous method (roller coating method), baked and cooled Products. The common production process of two-coat, two-baking continuous color coating unit process is: open-rolling → pretreatment → coating → baking → post-processing → coiling. The basic concept of the color coating: cold rolled steel strip, galvanized steel strip (galvanized and hot-dip galvanized) as the base plate on the continuous unit, surface pretreatment (degreasing and chemical treatment), with roller coating, coating One or more layers of liquid paint, baked and cooled plates are coated steel plates. Because the coating can have a variety of different colors, it is customary to call the coated steel plate a color-coated steel plate. The coated steel plate has light weight, beautiful appearance and good corrosion resistance, and can be processed directly. It provides a new type of raw materials for the construction industry, shipbuilding industry, vehicle manufacturing industry, furniture industry, and electrical industry, etc. Wood, efficient construction, energy conservation, pollution prevention and other good results. The use of galvanized steel as the substrate of the color coated steel plate, in addition to zinc protection, the organic coating on the zinc layer plays a role in covering the insulation, can prevent the steel plate from rust, the service life is longer than the galvanized steel, according to reports coating The service life of the steel plate is 50% longer than that of the galvanized steel plate. However, in different regions and different use locations, the use of the same color coating of the same amount of zinc, the same kind of coating, the same coating thickness, the service life will be very different. For example, in an industrial area or a coastal area, due to the action of dioxide gas or salt in the air, the corrosion rate is accelerated and the service life is affected. In the rainy season, if the coating is soaked by rain for a long time, or if the temperature difference between day and night is too high, condensation will occur quickly and the service life will be reduced. Buildings or factories made of colored coated steel plates are often exposed to rain and have a long service life. Otherwise, they are affected by the use of dioxide gas, salt and dust. Therefore, in the design, if the slope of the roof is larger, the dirt and other dirt will be less likely to accumulate and the service life will be longer. For those areas or parts that are not frequently washed by rainwater, the water should be washed regularly.