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Experimental and numerical research on magnetic pulse forming of DP600 high-strength steel with driver sheet

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Abstract

Magnetic pulse forming is high velocity forming technology, which requires the workpiece with better conductivity. However, high-strength steel with lower conductivity is difficult to deform by magnetic pulse forming. In this paper, AA1060 sheet was employed to drive DP600 sheet which was used to solve the forming problem of high-strength steel in magnetic pulse forming. Experimental tests and numerical method were used to investigate the deformation characteristic of DP600 sheet. Effects of drive sheet and discharge voltage for DP600 sheet deformation were analyzed. Forming height increases with increasing discharge voltage and optimal thickness of driver sheet is 2 mm. Forming profile and thickness of deformed DP600 sheet were provided. Distribution of magnetic field line and magnetic force were presented by numerical simulation. Higher magnetic flux density and magnetic force can be produced by 2 mm Al driver sheet. Deformation process, velocity, strain rate, and principal strain were investigated. During the driving process, DP600 sheet was accelerated and got higher velocity about 252 m/s with 2 mm driver sheet and C = 615 μF/U = 3.38 kV. Principal strain increases with discharge voltage increasing. And the varied trend can be described by quadratic equation.

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Acknowledgements

Thank you very much for help of experimental tests from professor Jianghua Deng. This project received financial support from the State Key Laboratory of Material Processing and Die & Mould Technology (No. P2018-019) and Key Research and Development Plan in Shandong Province (Grant No. 2017CXGC0404). The project was supported by the Science Fund of Key Laboratory of Advanced Manufacture Technology for Automobile Parts (Chongqing University of Technology), Ministry of Education (No. 2014KLMT06).

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Correspondence to Junrui Xu or Yang Liu.

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Xu, J., Cao, D., Chen, G. et al. Experimental and numerical research on magnetic pulse forming of DP600 high-strength steel with driver sheet. Int J Adv Manuf Technol 99, 181–199 (2018). https://doi.org/10.1007/s00170-018-2500-1

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  • DOI: https://doi.org/10.1007/s00170-018-2500-1

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