Expansion of cylindrical tubular workpieces on high-voltage magnetic-pulse installation with controlled vacuum discharger





high-voltage magnetic-pulse installations, capacitive energy storage, controlled vacuum discharger, current pulse «cut», probability of «cut», external coil, expansion of cylindrical tubular workpiece, part of complicated shape


Purpose. An experimental verification of the existence of a range of values for the parameters of the capacitive energy storage of the magnetic-pulse installations with controlled vacuum discharger, in which, with a high probability, there is a «cut» of the discharge current pulses and the expansion of cylindrical thin-walled tubular workpieces using an external coil. Methodology. High voltage magnetic-pulse installation of NTU «KhPI» with controlled vacuum discharger, multiturn coil with inside dielectrical die and inside aluminum alloy workpiece are used. The capacitance and charge voltage of capacitive energy storage are changed. Discharge current pulses are measured by Rogowski coil and the oscillograph. Results. Parts of complicated shape are made by expansion of cylindrical tubular workpieces with help of external coil. Pressed metallic tubular part is removable from inner dielectric rod. Originality. The frequency of «cut» pulse is defined by negative magnetic field pressure amplitude. It is shown that we must coordinate this frequency and charge voltage with capacitive storage parameters by high probability of pulse «cut». Practical value. It is shown how to use installations with controlled vacuum dischargers in magnetic forming technology based on «cut» pulses.

Author Biographies

L. A. Ljutenko, National Technical University «Kharkiv Polytechnic Institute», Ukraine

Postgraduate Student

V. M. Mikhailov, National Technical University «Kharkiv Polytechnic Institute», Ukraine

Doctor of Technical Science, Professor


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How to Cite

Ljutenko, L. A., & Mikhailov, V. M. (2021). Expansion of cylindrical tubular workpieces on high-voltage magnetic-pulse installation with controlled vacuum discharger. Electrical Engineering & Electromechanics, (3), 42–46. https://doi.org/10.20998/2074-272X.2021.3.07



Engineering Electrophysics. High Electric and Magnetic Field Engineering