Performance characteristics of hot-dip galvanizing

A thick and dense pure zinc layer covers the surface of steel fasteners, which can avoid contact between the steel substrate and any corrosive solution, protecting the steel fastener substrate from corrosion. In the general atmosphere, a thin and dense layer of zinc oxide is formed on the surface of the zinc layer. It is difficult to dissolve in water, so it plays a certain protective role on the substrate of steel fasteners. If zinc oxide forms insoluble zinc salts with other components in the atmosphere, its anti-corrosion effect is more ideal; Having a zinc iron alloy layer, combined with density, it exhibits unique corrosion resistance in marine salt spray and industrial atmospheres; Due to its strong bonding and zinc iron mutual solubility, it has strong wear resistance; Due to the good ductility of zinc, its alloy layer adheres firmly to the steel substrate. Therefore, hot-dip galvanizing can undergo various forming processes such as cold stamping, rolling, wire drawing, bending, etc., without damaging the coating; After hot-dip galvanizing of steel structural components, it is equivalent to one annealing treatment, which can effectively improve the mechanical properties of the steel substrate, eliminate the stress during the forming and welding of steel components, and is conducive to turning processing of steel structural components; The surface of the fasteners after hot-dip galvanizing is bright and beautiful; Pure zinc layer is the most plastic galvanized layer in hot-dip galvanizing, with properties similar to pure zinc and good ductility.
③ Application scope
This plating method is particularly suitable for various strong corrosive environments such as strong acid, alkali mist, etc.