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融雪盐对汽车车体的腐蚀,分外观腐蚀和孔腐蚀两类。前一类使漆膜起泡、剥离,后一类产生缝隙腐蚀。经表面处理的钢板可有效地防止这两类腐蚀。热浸镀锌钢板和镀锌扩散钢板以及电镀锌合金钢板。例如Zn-Ni和双层的Zn-Fe以及预涂复可焊接钢板,现已广泛使用于汽车车体的制造。这些经表面处理过的钢板,再经模拟实际驾驶的周期实验,现对其耐腐蚀的情况,在已公开的技术数据的基础上,作一评论。
Melting snow salt on the car body corrosion, sub-appearance corrosion and hole corrosion two types. The former class foams the paint film, peels off, and the latter produces crevice corrosion. Surface treatment of steel can effectively prevent these two types of corrosion. Hot dip galvanized steel and galvanized steel and galvanized steel sheet. Such as Zn-Ni and double-layer Zn-Fe and precoated weldable steel, are now widely used in the manufacture of automotive bodies. These surface-treated steel plate, after the actual driving simulation cycle experiments, are its corrosion-resistant situation, based on the published technical data, make a comment.