| 双丝间接电弧氩气保护焊的熔滴过渡与电弧形态 |
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| 引用本文： | 曹梅青,邹增大,曲仕尧.双丝间接电弧氩气保护焊的熔滴过渡与电弧形态[J].焊接学报,2012(6):47-50. |
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| 作者姓名： | 曹梅青 邹增大 曲仕尧 |
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| 作者单位： | 山东科技大学材料科学与工程学院;山东大学材料科学与工程学院; |
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| 基金项目： | 山东省高校科技计划资助项目(J12LA53);山东省自然科学基金青年基金资助项目(ZR2010EQ017);山东省优秀中青年科学家科研奖励基金资助项目(BS2011CL032);青岛经济技术开发区重点科技发展资助项目(2011-2-42) |
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| 摘 要： | 用高速摄像系统及示波器对双丝间接电弧氩弧焊的熔滴过渡及电弧形态和电弧电压之间的关系进行了深入分析.结果表明,熔滴过渡和电弧电压、电弧形态的规律性变化存在密切的对应关系.熔滴形成、长大、脱离焊丝端部的规律性变化使极性斑点间距及弧柱电阻发生变化导致了电弧电压的波动,从而使电弧形态发生由暗到明、由小到大的规律性变化.随着焊接电流的增大熔滴的过渡形式发生变化,熔滴尺寸减小.不同的熔滴过渡形式其电弧电压的波动也有所不同,射流过渡电压波动较小,而短路过渡电弧电压的波动最大.
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| 关 键 词： | 熔滴过渡 电弧形态 电弧电压 |
| 收稿时间： | 2011/4/18 0:00:00 |
Relationship between metal transfer and arc shape in twin-wire indirect arc welding |
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| CAO Meiqing,ZOU Zengda and QU Shiyao.Relationship between metal transfer and arc shape in twin-wire indirect arc welding[J].Transactions of The China Welding Institution,2012(6):47-50. |
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| Authors: | CAO Meiqing ZOU Zengda and QU Shiyao |
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| Affiliation: | College of Material Science and Engineering, SUST, Qingdao, Shandong 266510, China,College of Material Science and Engineering, Shandong University, Jinan 250061, China and College of Material Science and Engineering, Shandong University, Jinan 250061, China |
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| Abstract: | Relationship between metal transfer,arc shape and arc voltage was investigated with high speed camcorder system and digital oscillograph.Results show that metal transfer has a close relationship with arc voltage and the regular variation of arc shape.It shows that the regular changes of metal transfer make polarity spots spacing and arc beam resistance change and cause the arc voltage fluctuations,so that the arc shape changes regularly.Droplet transfer pattern changes and droplet size dereases with the increasing of welding current,different metal transfer mode has different arc voltage fluctuation,spraying transfer has lower variation of voltage but short transfer''s arc voltage variation is bigger. |
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| Keywords: | metal transfer arc shape arc voltage |
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