Galvanized sheet can also be divided into general use, indoor use, engineering construction side plate use, structural use, tile ridge plate use and low alloy plate use.
1、 Function of galvanized sheet
The demand of construction and light industry is the main market of galvanized sheet, which accounts for about 30% of galvanized sheet. According to the development speed of the national economy and the early consumption base, the demand in the first half of the year is about 4 million tons, which is equivalent to the consumption of 180000 tons of refined zinc. From home appliance industry to consumption of galvanized coil, air conditioner is the main consumption of galvanized steel products.
The indoor unit backplane, cabinet unit backplane, internals, shell and outdoor unit interior of the air conditioner are all made of galvanized sheet, and the average consumption of galvanized sheet for the air conditioner is 22kg. In addition, each washing machine consumes 8kg of galvanized sheet, and each refrigerator consumes 3kg of galvanized sheet. The automobile industry is also the main industry of galvanized sheet consumption, and its weight is much heavier than that of household appliances.
2、 Significance of Finishing Galvanized Sheet
While improving the flatness and flatness of the sheet, it can make the zinc particles on the surface smooth and the surface of the strip steel smooth, which is particularly beneficial in the case of deep impact and other high use accuracy;
The surface of the finished electroplating plate has roughness because the vibration roller used has been sandblasted in advance. It can improve the adhesion of the coating, and can also store a certain amount of grease, which is conducive to the lubrication of the mold during deep excavation processing;
On the later coated electroplating plate, even if the surface is controlled on the small zinc flakes, the small zinc flakes can also be exposed through the coating layer. Therefore, for the galvanized sheet with high requirements, the surface of small zinc flakes must be completed. This will give the galvanized sheet a uniform appearance of silver white. By smoothing, the yield point can be reduced to make the surrender platform disappear or unobtrusive, and then the sliding line during stretching or deep pushing can be prevented to improve the deep pushing property.