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双电弧集成冷丝复合焊中熔滴过渡及焊缝成形机理

向婷1,李桓1,韦辉亮1,高莹2

向婷1,李桓1,韦辉亮1,高莹2. 双电弧集成冷丝复合焊中熔滴过渡及焊缝成形机理[J]. 焊接学报, 2017, 38(10): 66-70. DOI: 10.12073/j.hjxb.20151111001
引用本文: 向婷1,李桓1,韦辉亮1,高莹2. 双电弧集成冷丝复合焊中熔滴过渡及焊缝成形机理[J]. 焊接学报, 2017, 38(10): 66-70. DOI: 10.12073/j.hjxb.20151111001

双电弧集成冷丝复合焊中熔滴过渡及焊缝成形机理

  • 摘要: 试验搭建了双电弧集成冷丝复合焊系统,研究了不同电参数匹配下的焊接过程. 结果表明,两熔化电极在直流模式下的熔滴过渡类型分为三种:短路过渡、短路+大滴过渡和大滴过渡. 当电弧电压较低时,过渡类型为短路过渡;随着电压逐渐增加,过渡类型从短路过渡变为短路+大滴的混合型过渡,最终完全变为大滴过渡. 其中短路过渡时焊接过程最稳定,飞溅最少,焊缝成形较好. 大滴过渡次之,而短路+大滴混合型过渡时焊接过程稳定性及焊缝成形最差. 此外,随着电弧电压的增加,熔滴的过渡频率呈先减小后增加的趋势.
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  • 收稿日期:  2015-11-10

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