Analysis of energy transfer process in magnetic pulse welding and optimization of system efficiency

Magnetic pulse welding drives the workpiece to collide at high speed through non-contact force, which is suitable for welding dissimilar materials or materials with poor weldability. However, the low energy utilization rate of the welding system limits the application of this technology in the industry. Therefore, in order to excavate the key factors affecting the efficiency of the system, this paper firstly discusses the energy transfer relationship of the magnetic pulse welding process in detail. On this basis, a specific scheme to optimize the system efficiency is proposed according to numerical analysis and theoretical derivation. The results show that reducing the inductance of the discharge circuit is an effective way to improve the energy utilization rate of the system. By redesigning the transmission line structure, the peak value and frequency of the discharge current were increased by 172.71% and 171.36%, respectively, which provided theoretical and technical support for the commercialization of the magnetic pulse welding system.