双侧激光脉冲非对称布置驱动GMAW可编程熔滴过渡分析  

Analysis of programmable metal transfer in GMAW driven by asymmetric arrangement of bilateral laser pulses

作　　者：贾亚洲 姚子鹏 肖珺[2] 陈树君[2] 黄文浩 王怀明 JIA Yazhou;YAO Zipeng;XIAO Jun;CHEN Shujun;HUANG Wenhao;WANG Huaiming(College of Materials Engineering,North China Institute of Aerospace Engineering,Langfang,065000,China;Faculty of Materials and Manufacturing,Beijing University of Technology,Beijing,100124,China;School of Mechanical and Electrical Engineering,Wenzhou University,Wenzhou,325000,China;School of Intelligent Engineering,Yanching Institute of Technology,Langfang,065000,China)

机构地区：[1]北华航天工业学院,材料工程学院,廊坊065000 [2]北京工业大学,材料与制造学部,北京100124 [3]温州大学,机电工程学院,温州325000 [4]燕京理工学院,智能工程学院,廊坊065000

出　　处：《焊接学报》2025年第3期59-64,共6页Transactions of The China Welding Institution

基　　金：国家自然科学基金青年基金项目(52305329);河北省自然科学基金(E2021409029);中央引导地方科技发展资金项目(236Z1001G);河北省高等学校科学技术研究项目(QN2022111);国防创新基金项目(GFCXJJ202304);河北省科技特派员(KJTPY202373)。

摘　　要：可编程熔滴过渡的核心是在一定区域内实现熔滴的可控定向偏转过渡,并通过匹配激光脉冲程序调控熔滴落点.在激光脉冲对称布置的基础上,文中提出了双侧激光非对称布置驱动熔滴可编程过渡控制策略,研究了非对称布置下的脉冲激光工艺参数对熔滴过渡行为与偏转角度的影响.结果表明,与激光对称布置不同,非对称布置的一侧激光照射固液界面,并在该点起到切割作用,另一侧激光照射熔滴本体,主要产生对熔滴的冲击作用;熔滴的偏转主要决定于右侧激光对熔滴的冲击作用,熔滴的最大偏转范围增加到55°,根据熔滴受力情况,建立了偏转熔滴对熔池的冲击力计算模型,利用高速摄像拍摄熔滴过渡过程,即可计算得到熔滴对熔池的冲击力.创新点:(1)采用双侧激光非对称布置驱动熔滴可编程过渡控制调控熔滴落点.(2)通过分析两侧不同激光功率对熔滴的作用情况建立数学模型.The core of programmable droplet transition is to realize the controlled directional deflection transition of the droplets in a certain area,and to regulate the droplet landing point by matching laser pulse program.On the basis of the symmetric arrangement of laser pulses,a programmable transition control strategy is proposed in the paper for the programmable transition of molten drops driven by the asymmetric arrangement of bilateral lasers.The effects of the pulsed laser process parameters on the transition behavior and deflection angle of the droplets under the asymmetric arrangement are investigated.The results show that,unlike the symmetric laser arrangement,one side of the asymmetric laser arrangement irradiates the solid-liquid interface and plays a cutting role at that point,while the other side of the laser irradiates the droplet body and mainly produces an impact effect on the droplet.The deflection of the droplet is mainly determined by the impact of the laser on the droplet on the right side,and the maximum deflection range of the droplet increases to 55°.A calculation model for the impact force of deflected droplets on the molten pool was established based on the force situation of the droplets.By using high-speed cameras to capture the transition process of the droplets,the impact force of the droplets on the molten pool can be calculated.Highlights:(1)The droplet programmable transfer control is used to control droplet landing point by using a double-sided laser asymmetrical arrangement.(2)A mathematical model was established by analyzing the effect of different laser power on the droplet.

关 键 词：激光脉冲 非对称阵列 可编程熔滴过渡 受力分析 

分 类 号：TG456.7[金属学及工艺—焊接] TG444.4