Galvanized hexagon socket screw

Galvanized hexagon socket screw The difference between galvanized bolt A and stainless steel boltGalvanizing is a metallurgical reaction process. From a microscopic perspective, the hot-dip galvanizing process involves two dynamic equilibria: thermal equilibrium and zinc iron exchange equilibrium. When steel workpieces are immersed in molten zinc solution at around 450 ℃, the workpiece at room temperature absorbs the heat of the zinc solution. When it reaches above 200 ℃, the interaction between zinc and iron gradually becomes apparent, and zinc infiltrates the surface of the iron workpiece. As the temperature of the workpiece gradually approaches the temperature of the zinc solution, alloy layers containing different ratios of zinc and iron are formed on the surface of the workpiece, forming a layered structure of the zinc coating. Over time, different alloy layers in the coating exhibit different growth rates. From a macro perspective, the above process manifests as the workpiece bei…