Production Process of Hot-dip Galvanizing Steel Strip

The coating is thick and dense, the coating has a strong bonding force with the steel substrate, and the durability is good. The service life of hot-dip galvanized steel with a galvanizing amount of 600g/m2 can reach more than 30 years; the hot-dip galvanized steel layer does not require maintenance during use.

Hot dip plating is a process method in which the material to be plated (substrate) is pretreated and immersed in a low-melting liquid metal or alloy to obtain a protective coating. The outstanding feature of this process is the metallurgical alloy layer formed between the base metal and the bath metal.

The metal to be plated (substrate) is generally ordinary carbon steel or alloy steel, but also cast iron and stainless steel. Low-melting-point metals used for hot plating include nonferrous metals such as zinc, aluminum, lead, tin and their alloys, among which zinc and its alloys are the most widely used hot-dip metals.

The hot plating process is simple and adaptable to the shape and size of the steel. In addition to the steel strip, the hot plating process is also widely used in steel pipes, steel wires and structural parts, and the productivity is high.

Compared with other protective coatings, the galvanized layer is very competitive economically. Especially for long-term parts, the cost of the hot-dip galvanized layer is much lower than that of the paint coating. Hot-dip galvanized steel sheet has the largest output, the most varieties and the most versatile applications.