Hot dip galvanizing is a kind of rust prevention treatment of steel, and it is a technique to prevent corrosion of steel by immersing steel in dissolved zinc at high temperature of 500℃ and forming zinc alloy layer on the surface of steel material. It is widely adopted as corrosion prevention of steel structures used at outdoors and indoors.
surface treatment2：electrostatic powder spraying
Powder spraying is a method using machines to give powder electrostatic and then the powder is evenly sprayed on the surface of the workpiece. After spraying, it is heated and solidified by a curing furnace to form a coating film. Electrostatic powder Spraying is widely used as a metal decoration technology. Through this technology, it is easy to get a high thickness of film to get a strong rust resistance and beautiful appearance. Besides, different colors of surface coating isworkable and available.
surface treatment 3:powder dip coated
Powder dip coated refers to the coating method that a porous plate is arranged at the bottom of the coating container, through which compressed air is transported to make the coat/powder flowing, and the heated workpiece is immersed in the flowing coat/powder under high temperature, forming a thick film. Dip coated method usually could make a thick film of about 1000 microns, to reach an effect of resist corrosion.
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