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鍍鋁鋅板的表面鍍層是由55%的鋁，43.5%的鋅和少量的其它元素構(gòu)成，在微觀下鍍鋁鋅涂層表面為蜂窩結(jié)構(gòu)，由鋁構(gòu)成的“蜂巢”內(nèi)包容著鋅，

在這種情況下，鍍鋁鋅涂層雖然也起著陽極保護(hù)的作用，但一方面由于鋅含量的減少一方面由于鋅材料由鋁包裹不易電解因此陽極保護(hù)的作用大大

減少，因此一旦鍍鋁鋅板被切開，在切斷的邊緣基本喪失被保護(hù)的情況下很快就會銹蝕，所以鍍鋁鋅板應(yīng)當(dāng)盡量少切割，一旦切割后應(yīng)用防銹漆或

富鋅漆保護(hù)邊緣，才能夠使板材的使用壽命延長。

The surface coating of the aluminized zinc sheet is made of 55% aluminum, 43.5% of zinc and a small amount of other elements, The ized zinc coating surface

is honeycomb structure, The hive, made of aluminum, contains zinc, under these circumstances, Although the aluminized zinc coating also plays a role in

anode protection, However, on the one hand, due to the reduction of zinc content, on the other hand, because the zinc material is not easy to electrolysis,

the role of anodic protection is greatly reduced, So that once the aluminized zinc plate is cut open, Quickly rust with the basic loss of protection at the cut

edge,So the aluminized zinc sheet should be cut as little as possible, Once cut, apply antirust paint or zinc-rich paint to protect the edge, Can make the service

life of the plate extended.