基于电弧声信号的高压干法水下脉冲MIG焊接稳定性分析
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摘要
高压焊接实验舱的封闭结构特征为电弧声信号在舱内低噪声传播创造了条件。在对传声器校准的基础上,建立了同步采集硬件系统,同步采集不同环境压力下脉冲MIG焊接的电流、电压和电弧声信号,并在时域和频域上分析了不同环境压力下的电弧声信号,研究电弧声信号特征与高气压环境下脉冲MIG焊接过程的相关性。结果表明,电弧声信号可以反映不同环境压力下脉冲MIG焊接的稳定性以及高压环境焊接过程的电弧能量损失,为进一步研究高压干法水下脉冲MIG焊接创造了条件。
Closed structure characteristics of the hyperbaric welding lab created the condition for low noise transmission of arc sound signal in the cabin. The hardware of arc sound acquisition system was designed and the welding current,arc voltage based on microphone calibration and arc sound signal of pulsed MIG welding were asynchronously acquired in different ambient pressure. The relativity of arc sound signal characteristics and the process of hyperbaric pulsed MIG welding was studied based on analysis of arc sound both in time domain and frequency domain. The results show that the stability and arc energy loss of pulse MIG welding in different ambient pressure were reflected by arc sound signal,which lay the foundation for further studying on the hyperbaric pulsed MIG welding.
Closed structure characteristics of the hyperbaric welding lab created the condition for low noise transmission of arc sound signal in the cabin. The hardware of arc sound acquisition system was designed and the welding current,arc voltage based on microphone calibration and arc sound signal of pulsed MIG welding were asynchronously acquired in different ambient pressure. The relativity of arc sound signal characteristics and the process of hyperbaric pulsed MIG welding was studied based on analysis of arc sound both in time domain and frequency domain. The results show that the stability and arc energy loss of pulse MIG welding in different ambient pressure were reflected by arc sound signal,which lay the foundation for further studying on the hyperbaric pulsed MIG welding.
引文
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[2]蒋力培,王中辉,焦向东,等.水下焊接高压空气环境下GTAW电弧特性[J].焊接学报,2007,28(6):1-4
[3]王春健,焦向东.高压空气环境下脉冲MIG焊电弧形态分析[J].焊接技术,2010(10):7-10.
[4]Ladislav G,Janez G.Feasibility Study of Acoustic for online Monitory in Short Circuit Gas Metal Arc Welding[J].International Journal of Machine Toll&Manufacture,2004,44(4):551-561.
[5]Saini D,Floyd S.An Investigation of Gas Metal Arc Welding Sound Signature for on-line Quality Control[J].Welding Journal,1998,77(4):172-179.
[6]Cudina M,Prezelj J.Evaluation of the sound signal based on the weld in the gas-metal arc metal welding Process[J].Proceedings of the institution of mechanical engineers,2003,217(5):483-494.