Development of a Two-Chamber MHD Tundish for Metal Ca

Authors

DOI:

https://doi.org/10.15407/scine17.04.019

Keywords:

continuous casting, electromagnetic stirring & pouring, magnetodynamic tundish, non-metallics, physical model

Abstract

Introduction. The multifunctional magnetodynamic tundish prototype is the first world magnetodynamic mixer and batcher for steel, which has a capacity of up to 10 tons of melt and an inductor electric power of 600 kW. It
has been successfully introduced into industry. Further works aim at adapting this device to continuous casting, in particular at obtaining semi-continuous cast billets at metallurgical micro-plants.
Problem Statement. Today, the study of the effect of electromagnetic field on melt stirring and removal of non-metallics in the inlet chamber of MD-T is an urgent task.
Purpose. The purpose of this research is to substantiate and to create MD-T as a two-chamber aggregate additionally equipped with a few electromagnetic & MHD devices for different purposes, to be used at metallurgical micro-mills.
Materials and Methods. Physical modelling has been applied for studying liquid metal stirring under the action of electromagnetic field and the removal of non-metallics.
Results. The behavior of the liquid jet falling from the ladle into the centrifugal chamber has been studied. The influence of the rational liquid level in the centrifugal chamber, which is exposed to the direct action of the electromagnetic field, has been estimated. It has been established that the effect of rotation of the total liquid volume
has been achieved at the height of application of electromagnetic field, which is 0.2—0.3 of the total fill height. Increasing the height of the application of a magnetic field leads to the capture of the upper layers of the liquid.
Conclusions. There have been proposed a new design of magnetodynamic tundish (MD-T) for continuous casting of steel. The use of tundish with a rotational motion of the flow may significantly reduce the number of large oxide inclusions (larger than 10 µm) in steel. The device has been successfully tested and its application will improve the quality of cast billets, extend the functionality of equipment and technologies, and enable the realization of modern high-efficiency processes of continuous casting.

Author Biographies

Oleksii Smirnov, Physico-Technological Institute of Metals and Alloys of the National Academy of Science of Ukraine

Dr. Sci. (Tech.), Professor, Head Researcher

Anatoliy Narivskiy, Physico-Technological Institute of Metals and Alloys of the National Academy of Science of Ukraine

Director Physico-Technological Institute of Metals and Alloys of the National Academy of Science of Ukraine, Dr. Sci. (Tech.), Corresponding Member of NAS of Ukraine

Yevgen Smyrnov, Department «Metallurgy and metal science» STI (branch) NUST «MISIS»

Professor of the Department «Metallurgy and metal science» STI (branch) NUST «MISIS», Dr. Sci. (Tech.)

Aleksei Verzilov, Physico-Technological Institute of Metals and Alloys of National Academy of Sciences of Ukraine

Senior Researcher, Department of MHD, Ph.D., Institute of Physics and Technology of Metals and Alloys, National Academy of Sciences of Ukraine, Kiev, Ukraine

Anastasiia Semenko, Physico-Technological Institute of Metals and Alloys of the National Academy of Science of Ukraine

Junior Researcher, Department of MHD, Physico-Technological Institute of Metals and Alloys of the National Academy of Science of Ukraine

Maksym Goryuk, Physico-Technological Institute of Metals and Alloys of the National Academy of Science of Ukraine

Deputy Head, Department of MHD, Physico-Technological Institute of Metals and Alloys of the National Academy of Science of Ukraine, Ph.D.

References

Wang, E. (2015). Progress of some techniques on electromagnetic metallurgy. Proceedings of the 8th International Conference on Electromagnetic Processing of Materials “EPM 2015. (October 12—16, 2015). Cannes, 3—6.

Sivak, B. A., Shakhov, S. I., Vdovin, K. N., Rogachikov Yu. M., Kerimov R. I. (2020). Development of a System for Electromagnetic Stirring of Liquid Steel in Molds of Billet and Bloom CCMS. Metallurgist, 63, 910—914. https://doi.

org/10.1007/s11015-020-00909-w

Fang, Q., Zhang, H., Wang, J., Liu, C., Ni, H. (2020). Effect of Electromagnetic Stirrer Position on Mold Metallurgical

Behavior in a Continuously Cast Bloom. Metall and Materi Trans B, 51, 1705—1717. https://doi.org/10.1007/s11663020-01849-1

Maurya, A., Kumar Jha, P. (2018). Study of Fluid Flow and Solidification in Billet Caster Continuous Casting Mold with Electromagnetic Stirring. Archives of Metallurgy and Materials, 63 (1), 413—424. https://doi.org/10.24425/118955.

Dubodelov, V. Y., Smyrnov, A. N., Efymova, V. H., Kravchenko, A. V., Verzylov, A. P. (2018). Hydrodynamic and physicochemical processes in tundishes for continuous casting of steel. Kyiv: Naukova dumka, 264 [in Russian].

Cho, S.-M.; Thomas, B. G. (2019). Electromagnetic Forces in Continuous Casting of Steel Slabs. Metals, 9, 471. https://doi.org/10.3390/met9040471.

Dubodelov, V., Semenko, A., Bogdan, K., Goryuk, M. (2019). Development of Principles to Control the Processes of

Continuous Casting of Alloys Using Magnetodynamic Equipment. Eastern-European Journal of Enterprise Technologies, 4(1(100)), 69—75. https://doi.org/10.15587/1729-4061.2019.172051.

Smirnov, A. N., Khobta, A. S., Smirnov, E. N., Serov, A. I., Verzilov, A. P. (2012). Casting of steel from the tundish of a continuous caster with a sliding gate. Russian Metallurgy, 12, 1—5 [in Russian]. https://doi.org/10.1134/S0036029512120166.

Lubenets, A. N., Smirnov, E. N., Shcherbachev, V. V. (2002). Production of ship sections from continuous casting billets. Stal, 8, 102—106 [in Russian].

Smirnov, A. N., Spiridonov, D. V., Verzilov, A. P., Golovatyi, V. A., Goida, D. I.. (2014). Effect of the design of a supply

nozzle on the ingot formation during semicontinuous casting of copper. Russian Metallurgy (Metally), 474—478 [in Russian]. https://doi.org/10.1134/S0036029514060147

Goman, V., Sokolov, I., Fedoreev, S. (2019). Modeling Electromagnetic Stirring Processes during Continuous Casting of Large-format Slabs. International Conference on Industrial Engineering, Applications and Manufacturing (ICIEAM), 2019, 1—5. Sochi, Russia. https://doi.org/10.1109/ICIEAM.2019.8743005.

Horiuchi, S., Uddin, M. A., Kato, Y., Kikuchi, N. (2014). Liquid / liquid Mixing Pattern in a Mechanically-stirred Vessel. ISIJ International, 54, 1, 82—86. https://doi.org/10.2355/isijinternational.54.82

Downloads

Published

2021-08-09

How to Cite

Smirnov, O., Narivskiy, A., Smyrnov, Y., Verzilov, A., Semenko, A., & Goryuk, M. (2021). Development of a Two-Chamber MHD Tundish for Metal Ca. Science and Innovation, 17(4), 19–24. https://doi.org/10.15407/scine17.04.019

Issue

Section

Scientific and Technical Innovation Projects of the National Academy of Sciences