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自保护药芯焊丝激光-电弧复合堆焊参数对熔滴过渡的影响

Influences of Laser-Arc Hybrid Surfacing Parameters with Self-Shielded Flux-Cored Wire on Droplet Transition

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摘要

研究了自保护药芯焊丝激光-电弧复合堆焊的熔滴过渡行为。结果表明,激光的加入明显减小了电弧斑点的漂移概率,拉伸了电弧空间,改变了熔滴受力状态及其过渡行为。激光前置比后置时更有利于熔滴过渡和电弧稳定性的提高。自保护药芯焊丝激光-电弧复合堆焊的最佳工艺参数为:激光前置,激光功率2 kW,光丝间距+4 mm,光斑直径为2 mm,光丝夹角30°。当光丝间距小且激光功率为4 kW时,熔滴过渡形式由排斥过渡变为爆炸过渡。

Abstract

The droplet transition behavior of laser-arc hybrid surfacing with self-shielded flux-cored wire is studied. The results show that the introduction of laser makes the arc wandering probability significantly reduced, arc space stretched, droplet stress state and transition behavior changed. Laser preposition is more beneficial to droplet transfer and arc stability improvement than laser postposition. The optimal process parameters of laser-arc hybrid surfacing with self-shielded flux-cored wire are laser preposition, laser power of 2 kW, laser-arc distance of +4 mm, light spot diameter of 2 mm and laser-arc angle of 30°. When laser-arc distance is small and laser power is 4 kW, the droplet transition mode is changed from repelled transfer to explosive transfer.

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中图分类号:TG456.7

DOI:10.3788/cjl201845.0802007

所属栏目:激光制造

基金项目:三明市指导性科技项目(2017-G-29)、机械科学研究总院技术发展基金(20170722)

收稿日期:2018-02-09

修改稿日期:2018-03-13

网络出版日期:2018-04-12

作者单位    点击查看

刘西洋:哈尔滨理工大学材料科学与工程学院, 黑龙江 哈尔滨 150080哈尔滨焊接研究院有限公司研发中心, 黑龙江 哈尔滨 150028
孙凤莲:哈尔滨理工大学材料科学与工程学院, 黑龙江 哈尔滨 150080
王君宇:哈尔滨焊接研究院有限公司研发中心, 黑龙江 哈尔滨 150028
赵御民:哈尔滨焊接研究院有限公司研发中心, 黑龙江 哈尔滨 150028

联系人作者:孙凤莲(sunflian@163.com); 刘西洋(2004liuxiyang@163.com);

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引用该论文

Liu Xiyang,Sun Fenglian,Wang Junyu,Zhao Yumin. Influences of Laser-Arc Hybrid Surfacing Parameters with Self-Shielded Flux-Cored Wire on Droplet Transition[J]. Chinese Journal of Lasers, 2018, 45(8): 0802007

刘西洋,孙凤莲,王君宇,赵御民. 自保护药芯焊丝激光-电弧复合堆焊参数对熔滴过渡的影响[J]. 中国激光, 2018, 45(8): 0802007

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