熔化极气体保护焊电弧光谱信号脉冲特征的本质

Nature of Pulse Waveform of MIG/MAG Welding Arc Spectrum——Reflection of Metal Droplet Transfer

基于对熔化极气体保护焊电弧光谱信号动态特征重要意义的认识 ,以发现新的熔滴过渡传感方法为目的 ,本文提出准同步高速摄影法 ,设计了准同步光谱信号 -高速摄影检测装置 ,验证了光谱信号波形中的脉冲是熔滴过渡所为 ,它们之间存在着确定的对应关系。此外 ,本文还对该现象给予了充分的理论解释并指出了其在熔滴过渡检测上的应用前景。

On the basis of cognition of the potential significance of welding arc spectrum dynamic characteristics and with the destination to find out new sensoring method of metal transfer,this paper provided the parasynchronous principle and in turn verified the relationship between the pulses in the waveform of arc spectrum signals and metal droplet transfer with para high speed photography apparatus.The testing result shows that the pulses in spectrum waveform were correspondingly brought up by droplet transfer,the pulses could be applied in process and quality real time control where metal transfer must be exactly detected.Meanwhile,the reason and theoretical explanation of pulse appearance were given.