The galvanized sheet production process
1. The high quality cold rolled steel coil china is eluted with alkali by alkali, washed with water, dried and then placed in a horizontal (vertical) heating furnace heated by a radiant tube for annealing, and a certain amount of hydrogen is introduced into the furnace to cause a reducing atmosphere in the furnace;
2. The steel strip heated to a certain temperature is immersed in the zinc liquid under certain conditions for hot-dip galvanizing. The strip immersed in the zinc liquid is discharged from the zinc pot and then controlled by an air knife to control the galvanizing amount;
3. The size of zinc flower is controlled by the composition of liquid zinc, and it is controlled by forced cooling. The small zinc flower product is quenched with small zinc flower equipment to prevent the zinc liquid from continuing to diffuse before the zinc flower begins to diffuse, forming small zinc. flower;
4. After the hot-dip galvanized strip is cooled, it is smoothed by the surface, and finally, according to the application, surface passivation treatment or direct production into a color coated coil.