管件磁脉冲焊接集磁器结构仿真优化  

Structure simulation and optimization of magnetic pulse welding fieldshaper for tube welding

作　　者：李岩[1,2] 杨德智 王贵成 李聚才 刘翠荣 LI Yan;YANG Dezhi;WANG Guicheng;LI Jucai;LIU Cuirong(School of Material Science and Engineering,Taiyuan University of Science and Technology,Taiyuan,030024,China;College of Intelligent Manufacturing Industry,Shanxi University of Electronic Science and Technology,Linfen,041000,China)

机构地区：[1]太原科技大学,材料科学与工程学院,太原030024 [2]山西电子科技学院,智能制造产业学院,临汾041000

出　　处：《焊接学报》2025年第1期103-111,共9页Transactions of The China Welding Institution

基　　金：山西省基础研究计划项目(202203021221149);山西省重点研发计划项目(202202150401016);山西省高等学校科技创新项目(2022L628)。

摘　　要：文中通过有限元仿真,研究了集磁器的工作原理,分析了磁脉冲焊接线圈放电电流大小和波形、焊接过程中磁场和电磁力分布;对比了集磁器结构强度以及铝管电磁缩径的大小.结果表明,集磁器利用结构内外侧的高度差,使得感应电流从面积较大的外表面流向面积较小的内表面,从而实现感应电流的汇聚.集磁器对磁场分布的改善与其斜壁的倾斜角α成正相关,垂直型集磁器性能整体高于常规集磁器,低于曲线型集磁器;集磁器截面的形状对其性能也有一定的影响,α角为0的曲线型集磁器性能最好,相较于目前应用较多的常规集磁器,在焊接区域磁感应强度大小提高了12%,铝管的缩颈变形量高了24.9%.3种集磁器在结构强度上差异较小,均可以保证焊接的稳定性.文中对集磁器结构的设计可以提供一定的参考.This article uses finite element simulation to study the working principle of the fieldshaper.It analyzes the magnitude and waveform of the coil current discharged in MPW,the distribution of magnetic field and electromagnetic force during the welding process,the structural strength of the fieldshaper and the size of the Al tube electromagnetic diameter reduction are compared.The results demonstrate that the fieldshaper utilizes the height difference between the inner and outer sides of the structure to facilitate the flow of induced current from the larger outer surface to the smaller inner surface,thereby achieving the convergence of induced current.The improvement of magnetic field distribution by the fieldshaper is positively correlated with the inclination angleαof its inclined wall,the performance of the vertical fieldshaper is higher than that of the conventional fieldshaper and lower than that of the curved fieldshaper.The shape of the cross-section also has a certain effect on its performance,curved fieldshaper structure with theαangle equal to 0 has the best performance,with a 12%increase in the magnitude of magnetic induction intensity in the welded region and a 24.9%higher deformation of the Al tube electromagnetic diameter reduction compared to the conventional fieldshaper,which is more commonly used today.The three types of fieldshaper have small differences in structural strength,all of which can ensure the stability of welding.This paper can provide a certain reference for the design of the fieldshaper structure.

关 键 词：电磁脉冲焊接 集磁器性能 数值模拟 电磁缩径 

分 类 号：TG439.9[金属学及工艺—焊接]