对8mm厚的S355J2G3钢板进行CO2气体保护焊,应用CD-WO1弧焊信号测试分析仪采集焊接电参数,自动生成电压电流波形图、电压概率密度曲线和U-I概率密度图。分析结果表明,电弧电压对短路过渡有明显影响,电弧电压偏低时过渡过程不稳定,偏高时将会出现混合过渡,本试验条件下,电压24V时短路过渡过程最为稳定。 CO2 gas shielded welding was applied to 8mm thick S355J2G3 steel plate. The welding parameters of CD-WO1 arc welding signal test analyzer were collected and the voltage and current waveforms, voltage probability density curve and U-I probability density map were automatically generated. The results show that the arc voltage has a significant effect on the short circuit transition. When the arc voltage is low, the transition process is unstable. When the voltage is too high, a hybrid transition will occur. Under the test conditions, the transition process of the short circuit at the voltage of 24V is the most stable.