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为了探索电弧在焊接过程自动控制、改善焊接接头质量等方面应用的新途径，提出以电弧自身作为可控的“超声发射源”的工作原理。在常规弧焊回路中采用了连续波和脉冲敲击式等不同的激励方式获得电弧超声信号。记录了电弧超声的频率、幅度、相移特性，初步估算了电弧超声声速。发现了电弧超声的若干“谐振频段”并对电弧频率响应的选择性现象进行了初步分析。试验结果表明，在弧焊过程中作为“产热机构”的电弧同时也可以作为“超声发射机构”，从而为开拓有关应用提供了可能性。
In order to explore a new way of arc automatic control in the welding process and improve the quality of welded joints, the working principle of the arc itself as a controllable “ultrasonic emission source” is proposed. In the conventional arc welding circuit using continuous wave and pulse percussion and other different excitation methods to obtain the ultrasonic arc signal. The frequency, amplitude and phase shift of arc ultrasonic were recorded, and the ultrasonic velocity of ultrasonic arc was preliminarily estimated. A number of “resonant frequency bands” of the ultrasonic arc were found and the phenomenon of the selective response of the arc frequency response was analyzed. The test results show that the arc as a “heat generating mechanism” in the arc welding process can also be used as an “ultrasonic transmitter mechanism” at the same time, thus providing the possibility of exploring relevant applications.