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镀铝锌板的表面镀层是由55%的铝，43.5%的锌和少量的其它元素构成，在微观下镀铝锌涂层表面为蜂窝结构，由铝构成的“蜂巢”内包容着锌，

在这种情况下，镀铝锌涂层虽然也起着阳极保护的作用，但一方面由于锌含量的减少一方面由于锌材料由铝包裹不易电解因此阳极保护的作用大大

减少，因此一旦镀铝锌板被切开，在切断的边缘基本丧失被保护的情况下很快就会锈蚀，所以镀铝锌板应当尽量少切割，一旦切割后应用防锈漆或

富锌漆保护边缘，才能够使板材的使用寿命延长。

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.