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| Stability Analysis of Electrical Signal in CO2 FluxCored Double Wire GMAW |
| WANG Fei a，b，HUA Xueming a，b，MA Xiaoli a，b，WU Yixiong a，b，c |
| (a.Welding Engineering Institute of Material Science and Engineering； b.Shanghai Key Laboratory of Materials Laser Processing and Modification； c.State Key Laboratory of Metal Matrix Composite, Shanghai Jiaotong University, Shanghai 200240, China) |
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Abstract In order to get a further understanding of the arc stability and study the regular phenomenon of arc interruption during the CO2fluxcored double wire GMAW process, a series of experiments (arc voltage matching, welding current matching and interwire distance matching) were designed. Synchronous highspeed camera system was used to take a picture of arc shape and data acquisition system based on Labview was used to collect current and voltage waveforms simultaneously. Then histogram was used to analyze the arc stability. The results show that decreasing the voltage of trailing arc, decreasing the current ratio between trailing arc and leading arc and increasing the interwire distance will enhance the leading arc stability; decreasing the current ratio between leading arc and trailing arc,decreasing the voltage of trailing arc and increasing the interwire distance will decrease the frequency of interruption of the trailing arc. Finally, the captured images of the arc were combined with the acquisition of current, voltage waveforms, by which the arc interruption phenomenon occurred in the welding process was analyzed.
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Received: 08 September 2009
Published: 29 April 2010
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HUA Xueming，WANG Fei，MA Xiaoli，WU Yixiong. Research on Arc Interruption of Triplewire GMAW[J]. J. Shanghai Jiaotong Univ.(Sci.) , 2010, 44(04): 442-0446. |
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