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Difference between Aluminized Zinc Coil and Zinc Coil
The difference between zinc coil and aluminized zinc coil mainly lies in the difference of coating, the surface of zinc coil is evenly distributed with a layer of zinc material, which plays the role of anode protection, that is to say, the alternative corrosion of zinc material to protect the use of the mother material, only when all the zinc corrosion can damage the mother material inside.
Aluminium zinc coil the surface of the coating is composed of 55% aluminum, 43.5% of the zinc and small amounts of other elements, aluminum zinc plating coating under microscopic surface for honeycomb structure, composed of aluminum in the “honeycomb” containing zinc, in this case, aluminum zinc steel coil has anodic protection role, but on the other hand due to the shrinking of zinc content on the one hand, because of the zinc material by aluminum bag not the role of electrolysis anode protection so greatly reduced, so once the aluminium zinc coil is cut, the cut off the edge of the protection of basic loss was will soon be under the condition of corrosion, so the plating aluminium zinc coil should be cut less as far as possible, Once cut after the application of anti-rust paint or zinc-rich paint to protect the edge, only to be able to extend the life of the coil.
The surface of aluminum zinc steel coil than galvanized coil to beautiful, at the same time, the price of aluminum zinc steel coil than galvanized coil expensive, the price of small zinc flowers than large zinc flowers expensive.
In the city with more humid air and rain, once a certain point of aluminized zinc coil appears rust, if you do not take measures in time, the slowly corrosion place will be bigger and bigger, and finally even the whole board surface; And galvanized sheet even if a point of corrosion will not spread.