Hot galvanizing in the future development trend

The new continuous hot dip galvanizing line and the preplating process are mostly based on the improved sensemir method. Of the 43 new lines built worldwide since the 1970s, 35 have been sensemir method.

Improve product quality, improve coating uniformity, improve the adhesive, corrosion resistance and coating of hot galvanizing coating. Gas injection method (air knife method) is used to control the coating thickness. 15 hot-dip galvanizing lines are controlled automatically by computer. Development of new products, such as difference thickness galvanized sheet, low alloy high strength and deep drawing galvanized sheet. The zinc flower elimination process is studied for coating plate.

As the standard electrode potential of hot galvanizing alloy layer is slightly higher than that of pure zinc, its electrochemical corrosion speed is slower than that of pure zinc layer. Because of its rough surface; So a good paint quality.