Galvanized plate and aluminum zinc plate difference

Aluminum zinc plate is not the same as the difference between coating, the surface of galvanized sheet evenly distributed with a layer of zinc materials, the anode protection effect to the parent metal, that is, alternative corrosion of zinc materials, protect the use of parent metal, in this case, the zinc is like somebody around meat shield, to shield the meat sacrifice finished, then the central figure. And aluminum zinc plate surface coating is made from 55% aluminum, 43.5% of the zinc and small amounts of other elements, under the microscopic, aluminum zinc plating coating performance for honeycomb structure, composed of aluminum honeycomb “containing zinc, in this case, aluminum zinc plating coating although anodic protection role, but on the other hand due to the shrinking of zinc content, on the one hand, because of the zinc material by aluminum bag, It is not easy to electrolyze, so the effect of anode protection is greatly reduced. Figure 2: Aluminized zinc plate here, the aluminized zinc plate is like the body armor worn by the important mission. Once a point is broken, the protection on that point is gone. Therefore, once the aluminized zinc plate is cut, the basic loss of protection in the cut edge, therefore, will rust soon, so the aluminized zinc plate should be cut as little as possible, once cut, the application of anti-rust paint or zinc rich paint to protect the edge, to be able to prolong the service life of the plate. 1. Ordinary pure zinc coating products (GI) Ordinary hot dip galvanized products can be divided into ordinary zinc flower, small zinc flower, zinc free flower and smooth surface products according to the surface state. Because of its good corrosion resistance, good processing performance, low production cost, beautiful appearance and other advantages, and widely used in construction, automobile, household appliances and other industries. In particular, small zinc flower, no zinc flower coating products, the surface grain is small and compact, smooth with better coating and corrosion resistance, especially suitable for household appliances, color coating and other industries. 2. GF Zinc aluminum alloy coating plate, also known as low aluminum galvanized steel plate, coating contains 5%Al, 95%Zn, and trace rare earth elements. The main advantage is that the plastic and adhesion of the coating is very good, and the corrosion resistance before and after deformation is unchanged; The atmospheric corrosion resistance is 2~3 times of the conventional hot galvanized sheet and has good coating, weldability, in all galvanized sheet, its good toughness, corrosion resistance and formability can be comparable with galvanized sheet. The product is mainly used for corrosion and weather resistance environment and coating material substrate. 3. The coating structure of aluminum zinc alloy coating plate is Al — Zn alloy, and the coating composition is 55%Al, 43.3%Zn, 1.6%Si. Its surface is smooth, with excellent atmospheric corrosion resistance, 2~6 times higher than the same hot galvanized sheet. It has high temperature corrosion resistance similar to hot aluminum plate, and can be used for a long time without any discoloration or deformation at 315 degrees high temperature. Water resistance is better than hot galvanized plate and hot aluminum plate, soil resistance is better than hot galvanized plate. Its thermal reflectance is higher than 75%, twice that of ordinary galvanized sheet. With good coating and processability, is gradually replacing galvanized sheet and widely used in the world.


Post time: Mar-29-2022