Hot-dip galvanizing of SPA-C weathering steel plate

Hot-dip galvanizing is to make the molten metal react with the iron matrix to form an alloy layer, so that the matrix and the coating are combined. The manufacture of SPA-C weathering steel plate processing is to pickle the weather-resistant steel plate to remove the iron oxide on the surface of the SPA-C weathering steel plate.

After pickling, it is treated with ammonium chloride or zinc chloride aqueous solution or a mixed aqueous solution of ammonium chloride and zinc chloride It is cleaned in the tank and then sent to the hot dip plating tank.

The treatment of hot-dip galvanized weather-resistant steel sheet is a complex physical and chemical reaction between the substrate of the SPA-C weathering steel plate and the molten plating solution to form a dense zinc-iron alloy layer with corrosion resistance and structural resistance.

The alloy layer is combined with the pure zinc layer and SPA-C weathering steel plate matrix is integrated, so the hot-dip galvanized SPA-C weathering steel plate has the advantages of uniform coating, strong adhesion and long service life.