Packaging steel strip hot galvanizing technology introduction

Packaging steel strip hot galvanizing technology introduction of hot galvanizing is a kind of method to prevent steel rusty. The process is largely clean up the workpiece surface by using the method of chemical treatment, and then dip galvanizing pan, zinc and iron react to form a coating. Since galvanized products for the first time more than 150 years ago, the original buried galvanized has no change, but only in the research on zinc plating process for the large please, to make today's galvanized technology can control the industry. Because the zinc can't simulcasting react steel covered with rust or grease, therefore in the iron and steel workpiece heat catalpa first must be cleaned before plating. Leaf to include degreasing, sandblasting and pickling process. Second, on steel parts must be coated with a layer of solvent, the surface activation, allow the zinc & other; Wetting & throughout; It and react when dip Zhen 3 galvanized parts removed, excess zinc flow back to zinc pot. Galvanized parts can be immersed in water ( Dip cold) Or just in the air cooling. The two main technologies adopted by the difference between solvent coating method. Is galvanized by wet process workpiece after pickling and cleaned by floating on the surface of the zinc pot, galvanized solvent: dry process is before the hot-dip galvanizing process, workpieces coating a layer of solvent was already dry, and then to dip galvanizing pot.