What Is Hot Dip Galvanizing? In Detail
Hot-dip galvanizing (HDG) is the process of coating steel by immersing it in a bath of molten zinc. There are three basic steps involved in hot-dip galvanizing; Surface preparation, galvanizing, and inspection. Hot-dip galvanizing is a form of galvanizing. It is the process of coating iron and steel with zinc that when the metal is immersed in a bath of molten zinc at a temperature of about 450°C (842°F), alloy with the surface of the base metal. In the atmosphere, pure zinc (Zn) reacts with oxygen (O2) to form zinc oxide (ZnO), which further reacts with carbon dioxide (CO2) to form zinc carbonate (ZnCO3), a mostly dull gray, fairly strong material that makes up the steel underneath many Protects against further corrosion. Galvanized steel is widely used in applications where corrosion resistance is required without the cost of stainless steel and is considered to be superior in terms of cost and lifespan. It can be identified by the crystallization pattern on...