UNCONVENTIONAL METHOD OF FORMING CIRCUMFERENTIAL RINGS ON SHEET METAL PARTS

1 MORAVEC Jan
Institution:
1 University of Zilina, Faculty of Mechanical Engineering, Department of Technological Engineering, Zilina, Slovak Republic, EU, jan.moravec@fstroj.uniza.sk
Conference:
27th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 23rd - 25th 2018
Proceedings:
Proceedings 27th International Conference on Metallurgy and Materials
Pages:
249-254
ISBN:
978-80-87294-84-0
ISSN:
2694-9296
Published:
24th October 2018
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
24 views / 10 downloads
Abstract

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
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