One new method to improve life of spot welding electrodes for galvanized steel sheets, cryogenic treatment, is presented.

提出了一种新的提高镀锌钢板点焊电极寿命的方法，即深冷处理工艺。

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The electrochemical characteristics of lead based alloy anodes with different composition prepared by different way are researched for suppressing the black patina of galvanized steel sheets.

为了防止铅系合金阳极引发电镀锌钢板黑变，对不同成分及不同制造方法得到的阳极进行了电化学性能研究。

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On the basis of finding that lead is the vital factor to bring patina on galvanized steel sheets, two hypothesizes, colloid film of lead sulfate and the codeposition of zinc and lead, were employed.

在发现铅是导致电镀锌钢板黑变发生的关键因素的基础上，对电镀锌钢板的黑变机理提出了锌铅共沉积假说和硫酸铅胶体膜假说；

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