Effect of pulse frequency on the stability of triple-wire indirect arc welding
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摘要: 三丝间接电弧焊是一种新的焊接方法，焊接过程中工件不连接电源，主丝连接焊接电源正极，两边丝分别连接两焊接电源的负极，电弧建立在主丝与两边丝之间. 焊丝熔化后主丝与边丝导电距离的变化以及焊丝形成的多条熔滴过渡路径均对建立稳定的焊接过程提出了挑战. 文中通过调控脉冲频率，分析了脉冲频率对电弧特性、熔滴过渡路径以及焊接电压和焊接电流分布的影响. 结果表明，脉冲频率对三丝间接电弧焊的稳定性影响较大，当脉冲频率大于100 Hz时，才能建立稳定的间接电弧；随着脉冲频率的增加，熔滴过渡路径的数量减少，更有利于形成均一的焊道；随着脉冲频率的增加，焊接电压和焊接电流变异系数减小，焊接电流和焊接电压的波动程度减小，三丝间接电弧焊的稳定性提高.Abstract: Triple-wire indirect arc welding is a new welding method. During the welding process, the workpiece is not connected to the power source, the main wire is connected to the positive electrode of the welding power source, and the two side wires are connected to the negative electrode of the two welding power sources respectively. The arc is established between the main wire and the two side wires. The melting of the welding wire leads to the change of the conductive distance between the main wire and the side wire, and the multiple droplet transfer paths formed by the welding wire which pose a challenge to establishing a stable welding process. In this paper, by adjusting the pulse frequency, the influence of pulse frequency on arc characteristics, droplet transfer path, welding voltage and welding current distribution is analyzed. The results show that the pulse frequency has a greater impact on the stability of triple-wire indirect arc welding. When the pulse frequency is greater than 100 Hz, a stable indirect arc can be established. As the pulse frequency increases, the droplet transfer path decreases, which is more conducive to forming a uniform weld bead. As the increase of pulse frequency, the variation coefficient of welding voltage and welding current decreases, the fluctuation degree of welding current and welding voltage decreases, and the stability of three-wire indirect arc welding improves.
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Keywords:
- triple-wire indirect arc /
- pulse frequency /
- arc characteristics /
- droplet transfer /
- stability
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图 2 脉冲频率对电弧形态的影响
Figure 2. Effect of pulse frequency on arc shape. (a) 80 Hz; (b) 100 Hz; (c) 150 Hz
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图 4 脉冲频率对电流变异系数和电流概率密度分布影响
Figure 4. Effect of pulse frequency on current variation coefficient and current probability density distribution. (a) current variation coefficient; (b) current probability density distribution
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图 5 脉冲频率对电压变异系数和电压概率密度分布影响
Figure 5. Effect of pulse frequency on voltage variation coefficient and voltage probability density distribution. (a) voltage coefficient of variation; (b) voltage probability density distribution
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图 6 脉冲频率对垂直于焊接方向的熔滴过渡的影响
Figure 6. Effect of pulse frequency on droplet transfer perpendicular to the weld direction. (a) 150 Hz; (b) 350 Hz
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图 7 脉冲频率对焊缝形貌的影响
Figure 7. Effect of pulse frequency on weld morphology. (a) 150 Hz; (b) 350 Hz
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图 8 脉冲频率对沿焊接方向的熔滴过渡的影响
Figure 8. Effect of pulse frequency on droplet transfer along the weld direction. (a) 150 Hz; (b) 350 Hz
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[1] Wang Jun, Cao Jian, Feng Jicai. Microstructure and mechanical performance of depositing CuSi3 Cu alloy onto 30CrMnSi steel plate by the novel consumable and non-consumable electrodes indirect arc welding[J]. Materials and Design, 2010, 31: 2253 − 2258. doi: 10.1016/j.matdes.2009.10.011
[2] 曹梅青, 邹增大, 杜宝帅, 等. 双丝间接电弧氩弧焊的熔滴过渡[J]. 焊接学报, 2006, 27(1): 45 − 48. doi: 10.3321/j.issn:0253-360X.2006.01.012 Cao Meiqing, Zou Zengda, Du Baoshuai, et al. Droplet transfer in double wire indirect arc argon arc welding[J]. Transactions of the China Welding Institution, 2006, 27(1): 45 − 48. doi: 10.3321/j.issn:0253-360X.2006.01.012
[3] 张顺善, 吴东亭, 邹增大, 等. 磁场对双丝间接电弧形态的影响[J]. 焊接学报, 2010, 31(7): 87 − 90. Zhang Shunshan, Wu Dongting, Zou Zengda, et al. Effect of magnetic field on twin-wire indirect arc shape[J]. Transactions of the China Welding Institution, 2010, 31(7): 87 − 90.
[4] Zhang Zhihao, Wu Dongting, Zou Yong. Effect of bypass coupling on droplet transfer in twin-wire indirect arc welding[J]. Journal of Materials Processing Technology, 2018, 262: 123 − 130. doi: 10.1016/j.jmatprotec.2018.06.032
[5] Fang Disheng, Song Gang, Liu Liming. A novel method of triple-wire gas indirect arc welding[J]. Materials and Manufacturing Processes, 2016, 31(3): 352 − 358. doi: 10.1080/10426914.2015.1058949
[6] Fang Disheng, Liu Liming. Analysis of process parameter effects during narrow-gap triple-wire gas indirect arc welding[J]. International Journal of Advanced Manufacturing Technology, 2017, 88: 2717 − 2725. doi: 10.1007/s00170-016-8802-2
[7] Liu Liming, Fang Disheng, Song Gang. Experimental investigation of wire arrangements for narrow-gap triple-wire gas indirect arc welding[J]. Materials and Manufacturing Processes, 2016, 31(16): 2136 − 2142. doi: 10.1080/10426914.2015.1090603
[8] 刘黎明, 胡成辉, 方迪生. 窄间隙气体保护三丝间接电弧焊缝成形特征[J]. 焊接学报, 2018, 39(2): 66 − 70. Liu Liming, Hu Chenghui, Fang Disheng. Weld bead formation in narrow-gap triple-wire gas indirect arc welding process[J]. Transactions of the China Welding Institution, 2018, 39(2): 66 − 70.
[9] Liu Liming, Hu Chenghui, Yu Shibao, et al. A triple-wire indirect arc welding method with high melting efficiency of base metal[J]. Journal of Manufacturing Processes, 2019, 44: 252 − 260. doi: 10.1016/j.jmapro.2019.05.022
[10] 胡成辉. 镜像对称式三丝间接电弧特性及工艺研究[D]. 大连: 大连理工大学, 2019. Hu Chenghui. Study of characteristic and process of the mirror-symmetry triple-wire indirect arc[D]. Dalian: Dalian University of Technology, 2019.
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