Hot dip galvanizing is the process of reacting molten metal with an iron substrate to produce an alloy layer, thereby combining the substrate and coating. Hot dip galvanizing refers to the pickling of iron and steel parts. In order to remove iron oxide on the surface of iron and steel parts, after pickling, they are cleaned in ammonium chloride or Zinc chloride aqueous solution or mixed ammonium chloride and Zinc chloride aqueous solution tank, and then sent to the hot dip plating tank. Hot dip galvanizing has the advantages of uniform coating, strong adhesion, and long service life.
Hot-dip galvanization isone of the most effective means to delay the environmental corrosion of steel materials. It is to dip the cleaned and activated steel products into the molten zinc solution, and through the reaction and diffusion between iron and zinc, coat the surface of steel products with zinc alloy coating with good adhesion.
Compared with other metal protection methods, the Hot-dip galvanization process has incomparable advantages in the protection characteristics of the combination of physical barrier and electrochemical protection of the coating, the bonding strength of the coating and the substrate, the compactness, durability, maintenance free and economy of the coating, and its adaptability to the shape and size of products. At present, Hot-dip galvanization products mainly include steel plate, steel strip, steel wire, steel pipe, etc., of which Hot-dip galvanization steel plate accounts for the largest proportion. For a long time, Hot-dip galvanization process has been favored by people because of its low plating cost, excellent protection characteristics and beautiful appearance, and is widely used in automobile, construction, household appliances, chemical industry, machinery, petroleum, metallurgy, light industry, transportation, power, aviation, marine engineering and other fields.
Post time: Jun-12-2023