[Oral Presentation]A triple-coil electromagnetic two-step forming method for tube fittings

A triple-coil electromagnetic two-step forming method for tube fittings

ID：222 Submission ID：1270 View Protection：ATTENDEE Updated Time：2020-10-28 20:59:27 Hits：284 Oral Presentation

Start Time：2020-11-04 10:30 （Asia/Shanghai）

Duration：15min

Session：[F] High Magnetic Field Engineering and Fusion Technology » [F2] Session 25 and Session 30

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Abstract

Electromagnetic forming (EMF) is widely used in the processing of tube fittings in the fields of aerospace, automobile, and other industrial manufacturing because of its high energy rate, which can significantly improve the forming limit of light-weight metal materials. One typical application of EMF is the tube attraction by a double-coil electromagnetic single-step (DCSS) forming method. However, the electromagnetic force in this method is uneven distributed on the tube, which will affect the uniformity of the final shape and undermine the performance of the workpiece. To solve this problem, a triple-coil two-step forming (TCTS) method is proposed in this paper. An electromagnetic-structure coupling finite element model is established to analyze the forming process in both DCSS and TCTS methods, the tube forming uniformities in both methods are compared. To quantify the uniformity of tube, the maximum deformation length D_max, is introduced and the area where the deformation is greater than 99% of the maximum deformation is defined as the maximum deformation length. The simulations results show that when using the DCSS method, D_maxD=3.8mm, and when using TCTS method, D_maxT=11.6mm. The TCTS method increases the maximum deformation length by 205%. All these results indicate the potential and the prospect of TCTS method in improving the forming uniformity of tube-fittings.

Keywords

Aluminium alloy;Electromagnetic forming;TCTS method;Tube bulging;Tube forming uniformity

Speaker

Zhao Xiang

China Three Gorges University

Xiang Zhao was born in China. He received the B.S. degrees in Hubei University of Technology, Wuhan, China, in 2020. He is a graduate student in the College of Electrical Engineering & New Energy at China Three Gorges University, Yichang. Majoring in Electrical engineering. His research interests include the technology of pulsed high magnetic field, high voltage technology, electromagnetic forming.

Submission Author

China Three Gorges University