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镀锌板与镀铝锌板的区别主要在于镀层的不同，镀锌板的表面均匀地分布着一层锌材料，对母材起着阳极保护的作用，

也就是说锌材料的替代性腐蚀保护了母材的使用，只有当锌全部腐蚀完了才能伤害到里面的母材。按后处理的形态，镀锌板分为钝化、涂油、

钝化涂油、漆封、磷化或不处理等类别。(1)钝化镀锌板：钝化镀锌板是为了减少在潮湿条件下产生白锈，

在镀锌以后的产品表面进一步涂敷一层钝化保护膜。按钝化膜，的种类又分为六价铬钝化、三阶铬钝化、无铬钝化等产品，一般不用于锌铁合金板。

The difference between galvanized plate and aluminum galvanized plate mainly lies in the difference of the coating layer.

The surface of the galvanized plate is evenly distributed with a layer of zinc material, which plays a role of anodic protection to the parent material,

that is to say, the alternative corrosion of zinc material protects the use of the parent material,

only when all the zinc corrosion can harm the parent material inside. According to the form of post-treatment, galvanized plates are divided into passivation,

oil coating, passivation oil coating, patent seal, phosphorization or untreated categories.(1) passivated galvanized plate:

passivated galvanized plate is to reduce the production of white rust under wet conditions,

after the product surface of galvanized is further coated with a layer of passivated protective film. According to the passivation film,

the type is divided into hexavalent chromium passivation, third-order chromium passivation, chromium-free passivation and other products,

generally not used in zinc ferroalloy plate.