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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。鍍鋁鋅合金（以及其它合金）鋼板是在鍍鋅鋼板后出現(xiàn)的一種耐腐蝕性能更好的鍍層鋼板。

鍍55%鋁鋅鋼板的鋁鋅合金結(jié)構(gòu)是由55%鋁、43.4%鋅與1.6%硅在600℃高溫下固化而組成，形成致密的鋁、鐵、硅、鋅四元結(jié)晶體，

此結(jié)晶體在鋼板表面形成一層堅固的屏障，因而能夠有效的防止腐蝕的產(chǎn)生。

The surface coating of galvanized sheet is made of 55% aluminium, Of 43.5% of zinc and a small number of other elements,

The aluminum zinc coating surface is a honeycomb structure, The "hive" made of aluminum contains zinc, under these circumstances,

Although the aluminum-coated galvanized coating also acts as an anodic protection, However, on the one hand, because of the reduction of zinc content,

on the other hand, because zinc material is not easy to electrolysis by aluminum, the effect of anode protection is greatly reduced, Thus, once the aluminous galvanized plate is cut through, In the protection of the basic loss of protection, So the aluminum-coated galvanized sheet should be cut as little as possible,

Once cutting, apply rust proof or zinc rich paint to protect the edges, Can make the service life of the plate is extended.

Aluminized zinc alloy (and other alloy) steel plate is a better corrosion resistance of the coated steel plate appeared after the galvanized steel plate.

The aluminum-zinc alloy structure coated with 55% aluminum-zinc steel plate is composed of 55% aluminum,

43.4% zinc and 1.6% silicon cured at a high temperature of 600℃, forming a dense aluminum, iron, silicon and zinc quadruple crystal,

which forms a solid barrier on the surface of the steel plate, and thus can effectively prevent corrosion.