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镀锌一般指钢板镀锌。主要是为防止钢板表面遭受腐蚀延长其使用寿命，在钢板表面涂以一层金属锌，这种涂锌的钢板称为镀锌板。锌的熔点为

419.5℃，化学性质活泼，在常温下的空气中，表面生成一层薄而致密的碱式碳酸锌膜，可阻止进一步氧化。当温度达到225℃后，锌剧烈氧化，

呈现白色的氧化锌。镀锌板表面的锌层能有效地保护钢板不被外界氧化，不易生锈腐蚀。因其这一特性使其在汽车制造业和家电电器制造业得到广泛

的应用。

Galvanization generally refers to the steel plate galvanization.Mainly in order to prevent corrosion on the plate surface to extend its service life, the plate surface

is coated with a layer of metal zinc, this zinc coated plate is called galvanized plate.The melting point of zinc is 419.5℃, which is chemically lively. In room

temperature air, a thin and dense alkali zinc carbonate membrane is formed on the surface, which can prevent further oxidation.When the temperature reaches

225℃, the zinc is violently oxidized, showing a white zinc oxide.The zinc layer on the surface can effectively protect the steel plate from external oxidation,

not easy to rust and corrosion.Because of this characteristic, it is widely used in the automobile manufacturing industry and the home appliance manufacturing industry.