There are three galvanized methods for galvanized steel sheet, which are roller coating method, film method, and curtain flow method.
Roller coating is the most widely used process method. Roller coating units are divided into one-coat-one-bake, two-coat-two-bake, three-coat-three-bake and other types to meet the requirements of different coating thicknesses. There are the most two-coat and two-bake units in the world. Products are widely used in outdoor buildings, but also in interior decoration, home appliances, furniture, appliances and other fields.
The film coating method is used to produce color-coated sheets with high horsepower production. The pretreatment before coating is basically the same as the galvanized sheet with the roller coating method. After the pretreatment, the lower surface of the strip is coated with back paint, and then the plastic film is pasted with a thermosetting adhesive. On the top surface of the substrate, after cooling and flattening to create benefits, a beautiful-looking color film board is obtained. This kind of film color-coated board has a beautiful appearance, fire resistance, corrosion resistance, acid and alkali resistance, etc., and has good fire resistance and pollution resistance. However, the price is high, and its products are mainly used in home appliances, furniture, interior decoration and interior decoration of cars and boats.
Roller coating is used for initial coating, and curtain coating machine is used for finishing coating. Liquid coating is applied to the surface of the strip. The coated strip does not leave roll marks, which is difficult to control. It is suitable for producing high-quality home appliances. Coated.
The above are the three galvanizing methods of galvanized steel sheet.
