Research on Electromagnetic Pulse Crimping Technology of DTM–50 Terminal and Wire
YU Haiping, HOU Shuang, CONG Lanjun, LI Haohua
1. School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001 China;
2. National Key Laboratory for Precision Hot Processing of Metals, Harbin Institute of Technology, Harbin 150001, China;
3. Suzhou Research Institute, Harbin Institute of Technology, Suzhou 215104, China
In order to improve the joint strength of traditional mechanical crimping terminal and wire, while decreasing the resistance, the electromagnetic pulse crimping process of DTM–50 terminal and wire was studied, focusing on the assessment of mechanical properties, electrical properties, cross section morphology and other indicators. The results show that with the increase of discharge voltage, the radial deformation and pullout force of the electromagnetic pulse crimped joint increase, and the resistance of the joint decreases, and the variation trend tends to be stable with the internal gap filling gradually. Based on the performance of traditional mechanical crimping joint, the discharge voltage process window of electromagnetic pulse crimping is 8–10 kV, and the corresponding discharge energy is 9.73–15.20 kJ. Among them, 9 kV is the optimal process parameter, and the pullout force of electromagnetic pulse crimping is increased by 150% than conventional process, and the contact resistance is decreased by 50% than conventional one.
2025, 
