Hot dip galvanized steel strip surface quality inspection

Hot dip galvanized steel strip surface quality inspection. Will inevitably be in the process of galvanized, some uncontrolled reasons, such as power outages and malfunction, improper operation or site operation personnel, are likely to cause some disadvantages to hot dip galvanized steel strip products, our company through years of accumulation of experience, summarized as follows. First: zinc granule, the surface of some products will be the size of a grain of granular objects, is a kind of zinc iron compounds called zinc granule, not as concerned about preventing anything-from they could interfere with use. Is the cause of zinc granule zinc slag in the liquid zinc pool in the morning, to avoid the main method of zinc granule is cleaning liquid zinc slag in the pool is on time. Second: thick side, sometimes hot dip galvanized steel strip in the middle of the zinc layer thinner than on the edge of the zinc layer, such products known as thick edge, the edge of the thick damage than zinc granule, will cause the sea side. Thick edge into high-speed and low-speed thick and thick. High-speed thick edge is air blade Angle, formation of turbulence, the reason is to adjust the Angle of air knife line; Thick edge because of nozzle flow loss at low speed, adjust the nozzle spray speed can easily be solved.