Since the standard electrode potential of zinc is lost to iron, galvanized layers in water and humid air have sacrificial anodes to protect the steel base, which can greatly extend the service life of the steel. Commonly used in the industrial galvanized layer of hot-dip galvanized, electro-galvanized, mechanical galvanizing and thermal spraying (plating) zinc, which accounted for about 95% of the total amount of hot-dip galvanizing, Accounting for 40% of zinc production in the world, accounting for about 30% of China's zinc production.
Hot dip galvanized steel, stainless steel, cast iron and other metals immersed in molten liquid metal or alloy in a coating technology. Hot-dip galvanizing, also known as hot-dip galvanizing, is a method in which a steel member is immersed in a molten zinc solution to obtain a metal coating. With the rapid development of high-voltage transmission, transportation and communication, the requirements for the protection of steel parts are increasing, and the demand for hot-dip galvanizing is also increasing.
Hot-dip galvanizing is the world's most widely used, cost-effective steel surface treatment methods. Hot dip galvanized steel products to reduce corrosion and prolong life, energy saving and material plays an immeasurable and irreplaceable role, while the coating is also a national support and priority development of high value-added steel products.
With the implementation of the western development strategy, China's hot-dip galvanizing industry has entered a new round of high-speed (high-speed), high-speed, high-speed, high-speed, development stage.