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The paper deals with the unconventional way of making thin-walled circumferential rings produced by classical technology. The essence of the phenomenon is induction. The accumulated energy drains through the coil to produce a repulsive force that causes a dull thrust. Further, the theoretical process conditions are described. Figures illustrate the entire forming process. The drawbar is designed as an all-metal (non-magnetic) with a divided die, from which the finished work is removed and elapsed after completion of the process. The electromagnetic pulse causes the necessary strain and forces to form peripheral rings on the drawing piece. After disconnecting the DC stream and rejecting the coil from the drawing piece, the divided die is scraped and the extraction is removed from the tool. The drawing pieces were almost plastically deformed, but the magnetic field built up had to be considerably larger than that of the experiments. It turns out that such a forming process is directly dependent on the size of the supplied current, the built-up magnetic field, and the drawing piece plate thickness. It is possible to expect a state where the drawing pieces can be formed even under the conditions of piece production just by applying the magnetic field to the process.
Keywords: Magnetic impulse, sheet metal forming, draw die, drawpiece, samples© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.