中国激光, 2018, 45 (8): 0802007, 网络出版: 2018-08-11
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 下载: 618次
Influences of Laser-Arc Hybrid Surfacing Parameters with Self-Shielded Flux-Cored Wire on Droplet Transition
激光技术 激光-电弧复合堆焊 熔滴过渡 自保护药芯焊丝 工艺参数 laser technique laser-arc hybrid surfacing droplet transition self-shielded flux-cored wire technological parameters
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.
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. 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.