Affiliation:
1. Polytechnic Institute (branch) M.K. Ammosov North-Eastern Federal University
2. Institute of Molecule and Crystal Physics UFRC RAS;
Institute for Metals Superplasticity Problems RAS
Abstract
The paper presents the results of a study on the search for correct methods for measuring a high-value current pulse, which will be used to conduct research on the electroplastic effect. The electroplastic effect is the effect of electric current pulses on the plastic flow of metals. Electroplastic metal forming technology is a relatively new metal forming process that is energy efficient, environmentally friendly and versatile. In particular, it can be used to process metals or alloys that are difficult to process using conventional manufacturing processes. For the experimental study of the electroplastic effect, it became necessary to measure pulse currents of large magnitude, not only in amplitude, but also in the shape of the pulse. The pulsed current causes the formation of an alternating electromagnetic field near the conductors, so it can be measured with a Rogovsky current transformer. The results of the work present a schematic electrical diagram and a photograph with the appearance of an experimental installation for the study of the electroplastic effect. The results of measurements of the current value, the voltage drop on the sample and the dependence of the peak voltage values on the sample on the peak current value are shown. After making calculations and renormalising the data for the voltage drop on the sample according to the peak value of the current obtained on the transformer, the authors obtained the desired current values. The error of this method is estimated by calculating the total capacitance of capacitors, which does not exceed 2%.
Publisher
North-Eastern Federal University
Reference12 articles.
1. Abdullina, D.U., Bebikhov, Yu.V., Tatarinov, P.S. and Dmitriev, S.V. (2023). Review of recent achievements in the field of electroplastic metal forming. Basic problems of Material Science, 20(4), pp. 469–483.
2. Davydov, A.D., Volgin, V.M. and Liubimov, V.V. (2004). Electrochemical dimensional treatment of metals: shaping process. Electrochemistry, 40(12), pp. 1438–1480.
3. Starikovskiy, A.Yu. and Aleksandrov, N.L. (2021). Control of gas-dynamic flows by ultrafast local heating in strongly nonequilibrium pulsed plasma. Plasma Physics, 47(2), pp. 126–192.
4. Fortov, V.E. (2009). Extreme states of matter on earth and in space. Successions of physical sciences, 179(6), pp. 653–687.
5. Anikuev, S.V., Kostiukova, E.I., Nikitenko, G.V. and Sharipov, I.K. (2021). About realisation of additional functions of installations for testing of power semiconductor devices by pulse current. Electrotechnics, 7, pp. 42–46.