焊接电流对电阻点焊有着重要的影响，因此在点焊过程中实时显示焊接电流波形是十分必要的。
Spot welding is greatly affected by the current, so the real-time display of current waveform in the welding is very necessary.
第二部分研究了在氩气作保护气体的情况下，用变极性TIG焊方法焊钢时，焊接电流、电压的变化情况和电弧形态的变化。
The second is, when steel is welded by means of VPTIG of argon, the changes in current, voltage and arc shape.
第三部分研究了在氦气作保护气体的情况下，用变极性TIG焊方法焊铝时，焊接电流、电弧电压的变化情况和电弧形态的变化。
The third is, when Al is welded by means of VPTIG method of helium, the changes in current, voltage and arc shape.
应用推荐