基于气泡声信号的水下湿法焊接电弧特性分析

Analysis of Arc Characteristics of Underwater Wet Welding Based on Bubble Acoustic Signal

由于水下湿法焊接的特殊性,电弧的燃烧是在焊接区域周围动态变化的气泡中进行的,焊接电弧的稳定性会受到气泡生长扰动的影响。基于气泡声信号研究,开展了常压水下湿法焊接声电信号同步分析实验。从一种全新的角度,通过同步采集不同焊接状态下的气泡声信号及电弧电信号,进行两者之间的相关性分析。研究结果表明,气泡声信号可以清晰地反映出焊接电弧燃烧的各种状态,能对不同气泡演变模式进行分类,并分析其与电弧燃烧特性的对应关系。这为研究水下湿法焊接电弧与气泡的相互作用机理提供了一种新方法。

Due to the particularity of underwater wet welding,the combustion of the arc is carried out in the dynamically changing bubbles around the weld zone,and the stability of the welding arc is affected by the bubble growth disturbance.Based on the research of bubble acoustic signal,a simultaneous analysis experiment of acoustic and electrical signals in atmospheric pressure underwater wet welding was carried out.From a new perspective,the correlation between the bubble acoustic signal and arc electrical signal was obtained by synchronously collecting bubble acoustic signals and arc electrical signals in different welding states.The results show that the bubble acoustic signal can clearly reflect various states of the welding arc combustion,can classify different bubble evolution modes and analyze the corresponding relationship with the arc combustion characteristics.A new method was proposed to study the interaction mechanism between underwater wet welding arc and bubble.