王卫东，邢淑清，麻永林，陈重毅
Wang Weidong，Ma Yongling，Xing Shuqing, Chen Zhongyi
（内蒙古科技大学材料与冶金学院，内蒙古 包头 014010）
关键词：电磁脉冲；特种焊接；ANSYS有限元分析；数值模拟
中图分类号：TG457 文献标识码：A
摘要：为了得到电磁脉冲焊接过程中，异种金属焊接件中电磁场和电磁力的变化规律，本文通过ANSYS计算软件，分析了添加集磁器前后，不同阶段焊接区域的电磁场和电磁力的变化。结果表明，电磁脉冲焊接过程中，电磁力的分布主要有纵向增减和横向位移，其增减和位移过程呈现周期变化，同时可以通过对电流等参数的控制，达到控制焊接成型力的目的。集磁器结构在电磁脉冲焊接中起到了改变磁场强度分布，集中电磁力的作用，其设计可以大大增强磁脉冲焊接中所需的电磁力，这为进一步优化电磁脉冲焊接结构有重要的指导意义。
Numerical analysis of 304 stainless steel / copper dissimilar metals during the magnetic pulse welding process
Wang Weidong，Ma Yongling，Xing Shuqing, Chen Zhongyi
（School of Material and Metallurgy, Inner Mongolia University of Science and Technology, Baotou014010, Inner Mongolia Autonomous Region, China;）
Key words: electromagnetic pulse, special welding, ANSYS , numerical simulation
Abstract: The change of electromagnetic field and electromagnetic force in different stages were analyzed by using ANSYS software in order to obtain the variation law of electromagnetic field and electromagnetic force in electromagnetic pulse welding. The results show that the distribution of electromagnetic force in the electromagnetic pulse welding process is mainly vertical and horizontal displacement, while the electromagnetic force presented a periodical change in the process of its increase, decrease and displacement. By comparing the distribution of electromagnetic field and electromagnetic force after adding the structure of magnetic field shaper, it is found that field shaper in electromagnetic pulse welding has the function to change the distribution of magnetic field strength and the concentration of electromagnetic force. The results also show that the set of porcelain structure in electromagnetic pulse welding changed the distribution of magnetic field intensity and concentrated the electromagnetic force. And the welding shaping force can be controlled by controlling the parameters of the current in the process of electromagnetic pulse welding. As a result, the electromagnetic force can be greatly increased through the design of the set of porcelain structure, which is of great significance to further optimize the structure of electromagnetic pulse welding.