Fluid Flow Mode of Nugget in Magnetically Assisted Resistance Spot Welding With Unequal Thickness Plates: Modeling and Experiments

被引:8
作者
Ao, Sansan [1 ]
Huang, Yifei [1 ]
Du, Huimin [1 ]
Luo, Zhen [1 ]
机构
[1] Tianjin Univ, Sch Mat Sci & Engn, Tianjin 300350, Peoples R China
来源
JOURNAL OF MANUFACTURING SCIENCE AND ENGINEERING-TRANSACTIONS OF THE ASME | 2021年 / 143卷 / 01期
基金
中国国家自然科学基金; 国家重点研发计划;
关键词
magnetically assisted resistance spot welding; unequal thickness plates; fluid mode; multi-physics finite element model; nugget offset ratio; modeling and simulation; welding and joining; TRANSPORT PROCESSES; LIQUID NUGGET; ELECTRODE; QUALITY; GROWTH; MICROSTRUCTURES; SIMULATION; FIELD;
D O I
10.1115/1.4047999
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The nugget offset is the main challenge in the resistance spot welding (RSW) of unequal thickness plates. Magnetically assisted resistance spot welding (MA-RSW) is a potential new process to reduce the nugget offset ratio. Aiming at analyzing the fluid flow mode of the MA-RSW with unequal thickness plates, a multi-physics finite element model, including distortion field, thermal field, electric field, magnetic field, and fluid field, was created. The experimental validation verified the accuracy of the model. The connection between magnetic fields and nugget shape was analyzed. The results show that the fluid flow modes in the MA-RSW are composed of two parts, namely, the circumferential flow in the horizontal section and the approximately mirror-symmetrical flow in the vertical section. The circumferential motion is intensified with increasing magnetic flux density, and thus, the liquid metals with higher magnetic flux density tend to expand toward the solid-liquid interface, leading to nugget growth in these areas. Finally, based on the numerical results, a process of minimizing the nugget offset is proposed. The experimental results indicate that the proposed process can improve the nugget offset in RSW of unequal thickness plates.
引用
收藏
页数:12
相关论文
共 39 条
[1]   Evaluation of the Role of Eddy Current in Resistance Spot Welding [J].
Abu-Aesh, M. ;
Hindy, Moataza .
JOURNAL OF MANUFACTURING SCIENCE AND ENGINEERING-TRANSACTIONS OF THE ASME, 2009, 131 (06) :0610071-0610075
[2]  
[Anonymous], 2015, DRUG DELIV
[3]   Determination of residual stress in resistance spot-welded joint by a novel X-ray diffraction [J].
Ao, Sansan ;
Li, Chunjie ;
Huang, Yifei ;
Luo, Zhen .
MEASUREMENT, 2020, 161
[4]   The role of the partial melting zone in the nugget growth process of unequal-thickness dissimilar aluminum alloy 2219/5A06 resistance spot welding [J].
Du, Huimin ;
Bi, Jing ;
Zhang, Yu ;
Wu, Yudong ;
Li, Yang ;
Luo, Zhen .
JOURNAL OF MANUFACTURING PROCESSES, 2019, 45 :304-311
[5]   Evaluation of Electrode Degradation and Projection Weld Strength in the Joining of Steel Nuts to Galvanized Advanced High Strength Steel [J].
Enrique, Pablo D. ;
Al Momani, Hashem ;
DiGiovanni, Christopher ;
Jiao, Zhen ;
Chan, Kevin R. ;
Zhou, Norman Y. .
JOURNAL OF MANUFACTURING SCIENCE AND ENGINEERING-TRANSACTIONS OF THE ASME, 2019, 141 (10)
[6]   Resistance spot welding simulation: a general finite element formulation of electrothermal contact conditions [J].
Feulvarch, E ;
Robin, V ;
Bergheau, JM .
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2004, 153 :436-441
[7]   Effect of external magnetic field on resistance spot welding of aluminum alloy AA6061-T6 [J].
Huang, Ming ;
Zhang, Qingxin ;
Qi, Lin ;
Deng, Lin ;
Li, Yongbing .
JOURNAL OF MANUFACTURING PROCESSES, 2020, 50 :456-466
[8]   Impact of electromagnetic stirring upon weld quality of Al/Ti dissimilar materials resistance spot welding [J].
Li, Y. ;
Zhang, Y. ;
Bi, J. ;
Luo, Z. .
MATERIALS & DESIGN, 2015, 83 :577-586
[9]   Analysis of workpiece magnetisation on liquid nugget during resistance spot welding [J].
Li, Y. ;
Luo, Z. ;
Duan, R. ;
Yao, Q. ;
Yan, F. Y. ;
Chao, Y. J. .
SCIENCE AND TECHNOLOGY OF WELDING AND JOINING, 2014, 19 (02) :164-172
[10]   Investigation of induced magnetic force on liquid nugget during resistance spot welding [J].
Li, Y. ;
Luo, Z. ;
Bai, Y. ;
Ao, S. S. .
SCIENCE AND TECHNOLOGY OF WELDING AND JOINING, 2013, 18 (04) :329-336