Hot galvanizing is an effective metal anti-corrosion method and is mainly used in metal structure facilities in various industries. The rust-removed steel is immersed in a zinc solution melted at about 500 ° C to adhere the zinc layer to the surface of the steel member, thereby preventing corrosion. Hot galvanizing process: finished pickling-washing-assisting plating-drying-hanging-cooling-pharmaceutical-cleaning-grinding-hot galvanizing is completed.
Since the standard electrode potential of zinc is negative to iron, the galvanized layer in water and humid air has the effect of sacrificing the anode to protect the steel base, thereby greatly extending the service life of the steel. The amount of zinc used for hot galvanizing accounts for 40% of zinc production worldwide, and about 30% of zinc production in China.
Hot galvanizing is a process technology in which a metal such as steel, stainless steel or cast iron is immersed in a molten liquid metal or alloy to obtain a coating. Hot galvanizing is the most widely used and cost-effective steel surface treatment method in the world. Hot galvanizing products play an inestimable and irreplaceable role in steel corrosion reduction, life extension and energy saving.
Hot galvanizing corrosion resistance is much higher than cold galvanizing (also known as electro-galvanizing). Hot galvanizing does not rust in a few years, and cold galvanizing will rust within three months.