激光深熔焊匙孔及焊接飞溅行为的数值模拟

doi:10.11896/cldb.22030166

材料导报

2025, Vol. 39

Issue (3): 22030166-5 https://doi.org/10.11896/cldb.22030166

金属与金属基复合材料

激光深熔焊匙孔及焊接飞溅行为的数值模拟

彭进^1,2,3,*, 许红巧¹, 王星星¹, 龙伟民², 张永振³, 于晓凯⁴

1 华北水利水电大学材料学院,郑州 450045
2 中国机械总院集团宁波智能机床研究院有限公司,浙江宁波 315700
3 河南科技大学高端轴承摩擦学技术与应用国家地方联合工程实验室,河南洛阳 471023
4 洛阳轴承研究所有限公司,河南洛阳 471039

Numerical Simulation of Keyhole and Welding Spatter Behavior in Laser Deep Penetration Welding

PENG Jin^1,2,3,*, XU Hongqiao¹, WANG Xingxing¹, LONG Weimin², ZHANG Yongzhen³, YU Xiaokai⁴

1 Material College, North China University of Water Resources and Electric Power, Zhengzhou 450045, China
2 China Academy of Machinery Ningbo Academy of Intelligent Machine Tool Co., Ltd., Ningbo 315700, Zhejiang, China
3 National United Engineering Laboratory for Advanced Bearing Tribology, Henan University of Science and Technology, Luoyang 471023, Henan, China
4 Luoyang Bearing Research Institute Co., Ltd., Luoyang 471039, Henan, China

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摘要本工作借助激光焊接热-流耦合有限元模型,研究了激光深熔焊匙孔、焊接飞溅三维瞬态行为及熔池流场。研究结果表明,激光深熔焊过程中匙孔壁前方和后方都会产生焊接飞溅,匙孔壁后方焊接飞溅形成的过程中,匙孔底部易出现被挤压闭合的情况。焊接飞溅的形成经历了熔池表面出现小尺寸的液态金属隆起,形成液柱,液柱长大,液态金属与液柱分离形成飞溅的过程。匙孔前方产生焊接飞溅的熔体最大流速明显大于匙孔后方。由匙孔开口处到匙孔底部,熔池各个点的流动速度逐渐下降。

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	张永振
	于晓凯

关键词: 激光焊接匙孔焊接飞溅

Abstract: In this work, the three-dimensional transient behavior of welding spatters, keyhole and weld pool flow field in laser deep penetration welding were studied by using the heat flow coupling finite element model of laser welding. The results show that weld spatter occured both in front of and behind the keyhole wall during laser penetration welding. During the formation of welding spatter behind the keyhole wall, the bottom of the keyhole was prone to be squeezed and closed. The formation of welding spatter was a process in which small-sized liquid metal bulges appeared on the surface of the molten pool, forming a liquid column, the liquid column growed, and the liquid metal separated from the liquid column to form a spatter. The maximum flow rate of the melt producing welding spatter in front of the keyhole was significantly higher than that behind the keyhole. From the opening of the keyhole to the bottom of the keyhole, the flow velocity at each point of the molten pool decreased gradually.

Key words: laser welding keyhole welding spatter

出版日期: 2025-02-10 发布日期: 2025-02-05

ZTFLH:

TG456.7

基金资助: 河南省科技研发联合基金(产业类)(225101610002);河南省高等学校重点科研项目(24A460017);浙江省“尖兵”“领雁”研发攻关计划(2022C01187);河南省博士后科研项目(202003076);2025年度河南省重点研发与推广专项(科技攻关项目)

通讯作者: *彭进,博士,华北水利水电大学材料学院副教授、硕士研究生导师。目前主要从事激光、电弧焊接工艺及数值模拟等方面的研究工作。pengjin@ncwu.edu.cn

引用本文:

彭进, 许红巧, 王星星, 龙伟民, 张永振, 于晓凯. 激光深熔焊匙孔及焊接飞溅行为的数值模拟[J]. 材料导报, 2025, 39(3): 22030166-5.
PENG Jin, XU Hongqiao, WANG Xingxing, LONG Weimin, ZHANG Yongzhen, YU Xiaokai. Numerical Simulation of Keyhole and Welding Spatter Behavior in Laser Deep Penetration Welding. Materials Reports, 2025, 39(3): 22030166-5.

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http://www.mater-rep.com/CN/10.11896/cldb.22030166 或 http://www.mater-rep.com/CN/Y2025/V39/I3/22030166

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