摘要
以8.0mm高氮钢板为试验材料,采用高速摄像系统观测熔滴过渡模式和电弧形态的变化,并采集焊接过程中电弧和熔滴图像。利用弧焊分析仪记录电弧电信号,通过试验深入研究了焊接过程中的熔滴过渡及电弧形态和电弧电压之间的关系。实验结果表明,在焊接电流I=160A,电流电压U=22.4V,其余焊接参数不变时发现,电弧形态变化所经历的时间长短有所不同,焊接电流越大,电弧形态变化时间较短。熔滴形成并长大的过程中电弧电压是逐渐减小的而对应的焊接电流增大,随着焊接电流的增大熔滴的过渡形式也会发生变化,熔滴尺寸减小,不同的熔滴过渡模式其电弧电压的波动也有所不同,射流过渡电压波动较小,而短路过渡电弧电压的波动最大。
In this essay, the experimental material is 8.0 mm thick high Nitrogen steel plate, A high-speed video system is used to capture the changes in are shape and droplet transfer mode, as well as to collect the arc and droplet images during welding. An arc analyzer is used to record the signals of arc. Welding process of droplet transfer and the relationship between the arc voltage and arc shape were studied. The experimental results show that, when the rest of the welding parameters unchanged, arc current I 160 A, arc voltage U~ 22.4 V, Arc shape changes experienced by the length of time varies, an increase in weld- ing current reduced the arc shape. Droplet formed and grew up in the arc voltage is gradually decreased and the corresponding welding current increases, with the increase of the welding current, the change of the droplet transfer mode is changed, the droplet size decreases, the different droplet transfer mode of arc voltage volatility also different, less volatile jet transition volt- age, and short circuit transfer arc voltage fluctuation maximum.
出处
《应用激光》
CSCD
北大核心
2015年第6期672-676,共5页
Applied Laser
