Design and experiments of double-switch electromagnetic pulse welding system

• Main Authors: Zhigang Liao, Chengxiang Li, Jian Du, Yan Zhou, Xianmin Wang, Xin Shi
• Format: Article
• Language: English
• Published: Elsevier 2020-12-01
• Series: Energy Reports
• Subjects: Electromagnetic pulse welding; Trigger vacuum switch; Synchronous conduction; Mg/Al alloy plates
• Online Access: http://www.sciencedirect.com/science/article/pii/S235248472031516X

Limited by the current capacity of the discharge switch, the amplitude of the circuit discharge pulse current of electromagnetic pulse welding (EMPW) system is at a relatively low level, which greatly limits the application range of the EMPW technology. In this paper, the trigger vacuum switch (TVS) was selected as the discharge switch, and the double-switch synchronous conduction scheme was proposed. Based on two 20 kV/28 kJ single-switch electromagnetic pulse generation modular, a 20 kV/56 kJ double-switch electromagnetic pulse system was designed, which could generate a pulse current with the amplitude peak value of 360 kA when the charging voltage was 16 kV. Finally, the effective welding of 1 mm Mg/Al alloy plates was realized.