СИНХРОННЫЙ МАГНИТОЭЛЕКТРИЧЕСКИЙ ПЕРЕМЕШИВАТЕЛЬ ЖИДКОГО МЕТАЛЛА В КРИСТАЛЛИЗАТОРЕ МАШИН НЕПРЕРЫВНОГО ЛИТЬЯ ЗАГОТОВОК СТАЛИ

I.P. Kondratenko; A.P. Rashchepkin

No. 4 (2014), Electrotechnological Complexes and Systems

No. 4 (2014)

Electrotechnological Complexes and Systems

THE SYNCHRONOUS MAGNETOELECTRICAL STIRRER OF THE LIQUID METAL IN THE MOLD OF THE CONTINUOUS CASTING MACHINE THE STEEL

Published 2014-06-25

I.P. Kondratenko⁺⁻
A.P. Rashchepkin⁺⁻

I.P. Kondratenko

Institute of Electrodynamics of National Academy of Sciences of Ukraine, Peremohy, 56, Kyiv-57, 03680, Ukraine

A.P. Rashchepkin

Institute of Electrodynamics National Academy of Sciences of Ukraine, pr. Peremohy, 56, Kyiv, 03057, Ukraine

ARTICLE_42_PDF (Українська)

Keywords

stirrer
permanent magnets
the continuous casting
mold перемешиватель
постоянные магниты
непрерывное литье
кристаллизатор

How to Cite

[1]

Кондратенко , И. and Ращепкин , А. 2014. THE SYNCHRONOUS MAGNETOELECTRICAL STIRRER OF THE LIQUID METAL IN THE MOLD OF THE CONTINUOUS CASTING MACHINE THE STEEL. Tekhnichna Elektrodynamika. 4 (Jun. 2014), 126.

Abstract

For continuous casting machines proposed electromagnetic stirrer in the form of a synchronous motor with a hollow rotor. The rotating magnetic field in the liquid metal magnetic system is excited by a permanent magnet rotor with the stator winding currents. For an arbitrary rotation speed of the liquid metal boundary conditions are derived for the magnetic potential on the surface of the blanks, and found the magnetic field distribution in the cavity stirrer produced by a permanent magnet rotor and currents of the stator winding. Developed an iterative numerical-analytical method for calculating the distribution of the rotational speed of the liquid metal in the mold with synchronous electromagnetic a stirrer. The functional dependence of the maximum velocity of the metal near the crystallization front at the exit of the stirrer and him the power on the frequency a supply current is set. We derive the functional dependence, and formulas for calculating the energy performance of synchronous electromagnetic stirrer in the continuous casting molds. Formulated the requirements for the sustainable operation of synchronous electromagnetic stirrer and eliminate its possible falling out of synchronism. Formulated the requirements to the magnitude of the stator current and the magnitude of the magnetization of permanent magnet excitation system for excitation the magnetic induction given value in a liquid metal. It is shown that for identical versions of magnet excitation system greater a magnitude the magnetic induction in the liquid metal can be created in the mode under excitation. Control modes of the stirrer and the magnitude of the magnetic induction in the liquid metal is achieved varying the voltage of the stator winding. References 6.

ARTICLE_42_PDF (Українська)

References

Vishtak T.V., Karlov A.N., Kondratenko I.P., Rashchepkin A.P. Magnetic field of currents a winding stator of the synchronous motor with hollow a rotor // Tekhnichna Elektrodynamіka. – 2013. – No. 5. – Pp. 41–46. (Rus)

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Kondratenko I.P., Rashchepkin A.P., Vishtak T.V., Karlov A.N. Magnetic field the system excitation on permanent magnets of the synchronous motor with hollow a rotor // Tekhnichna Elektrodynamіka. – 2013. – No. 2 – Pp. 58–83. (Rus)

Patent №81579, UA, IPC B22D 27/02, H02K 17/02. A device for electromagnetic stirring of liquid metal / Bilobrov Yu.M., Kondratenko I.P., Rashchepkin A.P.

Beitelman L., Mulcahy J.A. Flow control in the meniscus of continuous casting mold with an auxiliary A.C. magnetic fild // Int. Symp. on Electromagnetic Processing of Materials, Nagoya, ISIJ. – 1994. – Pp. 235 – 241.

Kuwano T., Shigematsu N., Hoshi F., Ogiwara H. Metallurgical problem for continuous casting of stainless steel // Proc. lane. Advances in continuous casting of steel. Proceedings of the International Congress (London, 1982) – Moskva: Metallurgiia, 1987. – 224 p. (Rus).