In this project we have carried out a research on the buried arc automatic welding process for large welded gears with hard tooth surface.

对大型硬齿面焊接齿轮的埋弧自动焊工艺进行了探索和实施。

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The condition inbwhich the arc is buried are that the parameters such as CO_2 gas, thick wire, high current and low voltage should be used.

不过CO_2焊射滴过渡只能发生在潜弧状态下，产生潜弧的条件为在CO_2气氛中，使用粗焊丝，大电流和低电压的配合参数。

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