The appearance of galvanized packaging steel strip processing principle

The appearance of galvanized packaging steel strip processing principle. In normal working conditions, hot dip galvanized steel strip of the galvanized layer thickness of up to 50 & mu; M or more, can be safely used for 30 years. This is due to the effect of anode treasure of the iron substrate, hot dip galvanized strip steel appearance of pure zinc layer in atmosphere environment can generate a layer of dense, passivation of alkaline zinc carbonate [ Zn2( 哦) 2CO3 ] Cherish membrane further prevent the corrosion of zinc. But because the zinc is a relatively active elements react with acid and alkali are between the sexes, and can also exchange the heavy metal ion in salt, so in the humid acid or salt medium environment galvanized layer are vulnerable to damage, leading to corrosion perforation. So, in view of this situation, it is suggested that to deal with the appearance of the galvanized strip steel, such as the Beijing design, bitumen coating, or seal groove, in direct contact with zinc layer of isolation medium. So much help to the function of the galvanized strip, guarantee the safe use of in the use fixed number of year. By accident, not the sale of our products is not good enough, and we don't know maintenance, a good maintenance method can extend the life of the galvanized strip steel.