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| 双丝GMAW焊接的电弧干扰和中断分析 |
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王飞1,2, 华学明1,2, 马晓丽1,2, 吴毅雄1,2, 曹能3, 钱伟芳3
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1.上海交通大学焊接工程技术研究所, 上海 200240;2.上海交通大学上海市激光制造与材料表面改性重点实验室, 上海 200240;3.宝钢钢铁股份有限公司研究院, 上海 201900
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| 摘要: |
| 为了进一步了解双丝焊接过程中电弧干扰的规律以及有规律的断弧现象,设计了不同焊接电流参数值的匹配系列试验,同步拍摄了电弧形态并采集了两电弧的电流、电压波形.通过理论推导出的双丝电弧的偏移量公式分析了上述试验结果并得到了基本符合的结论:增大另一电弧与该电弧的电流比例,该电弧中断频率增加.最后将高速摄影拍摄到的电弧图片与采集到的电流、电压波形图相结合,分析电弧中断现象的循环过程.结果表明,通过合理的参数匹配可以避免断弧的产生. |
| 关键词: 双丝 电弧干扰 断弧 电弧偏移 |
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| Analysis of arc interference and interruption in double-wire GMAW welding |
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WANG Fei1,2, HUA Xueming1,2, MA Xiaoli1,2, WU Yixiong1,2, CAO Neng3, QIAN Weifang3
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1.Welding Engineering Institute of Material Science and Engineering, Shanghai Jiaotong University, Shanghai 200240, China;2.Shanghai Key Laboratory of Materials Laser Processing and Modification, Shanghai Jiaotong University, Shanghai 200240, China;3.Baoshan Iron and Steel Research Institute Company Ltd, Shanghai 201900, China
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| Abstract: |
| In order to get a further understanding the principle of electromagnetic interaction and study the regular phenomenon of arc interruption during the double-wire GMAW welding process, a series of experiments of different current matching are designed, then taking a picture of arc shape and collecting current and voltage waveforms simultaneously during the welding process. Analyses for the above-mentioned experiment results with displacement formula derived through the theory of electromagnetic then gets the same conclusion:the increase of another arc with the arc current ratio will increase the frequency of interruption of the arc. Finally, combining the captured images of the arc with the acquisition of current, voltage waveforms and analyzing the arc interruption phenomenon, the results show that the arc interruption phenomenon can be avoided by reasonable matching of welding parameters. |
| Key words: double-wire GMAW arc interference interruption displacement |
