The phosphating application can be roughly divided into three types: first, the phosphating film is mainly used as the bottom layer of the coating, the lubrication layer during metal cold processing, the protective layer of the metal surface, the insulation treatment of the silicon steel sheet of the motor, and the anti sticking treatment of the die casting mold. It is widely used in automobile, ship, aerospace, machinery manufacturing, household appliances and other industrial production. 2、 Role of phosphating before coating: enhance coating film ( E.g. paint coating ) Binding force with workpiece ; Improving corrosion resistance of surface coating of workpiece after coating ; Improve decoration. 3、 Function of non coating phosphating: improve the wear resistance of the workpiece, so that the workpiece has lubricity during machining ; After proper post-treatment, the wear resistance of the workpiece can be improved.
Phosphating is one of the important methods for corrosion prevention of metal materials , Its purpose is to provide corrosion protection for the base metal, to be used for priming before painting, to improve the adhesion and corrosion resistance of the coating, and to play the role of antifriction and lubrication in metal processing. Phosphating is a commonly used pretreatment technology, which in principle belongs to chemical conversion coating treatment. In engineering, phosphating is mainly applied to the surface of steel parts, but it can also be applied to nonferrous metals such as aluminum and zinc parts. Although there are three types of zinc iron manganese phosphating solutions, zinc phosphating solutions still occupy the main position in the market, and most of them are zinc phosphating solutions.
Phosphating solution is a pre-treatment process before painting steel. A stable phosphate film is formed on the surface of steel, which can improve the rust resistance of steel and increase the adhesion between materials and paint.
Phosphating
(1) Effect of phosphating before coating
① Enhance the bonding force between the coating layer (such as paint coating) and the workpiece.
② Improve the corrosion resistance of the surface coating of the workpiece after coating.
③ Improve decoration.
Beijing Zhubao New Technology Co., Ltd. is a professional high-tech enterprise integrating the development, production, sales and technical services of high-tech environmental protection products, fine chemicals and water treatment agents. With an annual production capacity of more than 10000 tons, there are several senior and intermediate technicians with rich practical experience, and a set of simulation experimental devices from small to medium-sized tests. Advanced analytical and testing equipment and production equipment, perfect experimental detection means. Welcome to call us for consultation, and get samples for free !
