Modeling Electromagnetic Stirring Processes during Continuous Casting of Large-format Slabs

Goman, V.; Sokolov, Igor; Fedoreev, S.

doi:10.1109/icieam.2019.8743005

Cited by 2 publications

(4 citation statements)

References 11 publications

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“…Subsequently, the interplay between these induced currents

and the alternating magnetic field

results in the emergence of electromagnetic forces

within the molten steel in the casting slab. For the theoretical modeling of this process, a set of simplified Maxwell’s equations is utilized as delineated in multiple scholarly sources [ 17 , 18 , 19 , 20 ].

where,

represents the magnetic field intensity, A/m;

represents the current density, A/m 2 ;

represents the electric field intensity, V/m 2 ;

represents the magnetic induction intensity, mT;

is the electrical induction intensity, C/m 2 ; σ is the conductivity, S/m; Re represents the real part of the complex number;

represents the conjugate complex of

; and

represents time-averaged electromagnetic force, N/m 3 .…”

Section: Model Descriptionsmentioning

confidence: 99%

“…Within the casting slab, this traveling wave magnetic field generates F within the molten steel in the casting slab. For the theoretical modeling of this process, a set of simplified Maxwell's equations is utilized as delineated in multiple scholarly sources [17][18][19][20].…”

Section: Governing Equationsmentioning

confidence: 99%

“…Subsequently, the interplay between these induced currents 𝐽 ⃑ and the alternating magnetic field 𝐵 ⃑ results in the emergence of electromagnetic forces 𝐹 ⃑ within the molten steel in the casting slab. For the theoretical modeling of this process, a set of simplified Maxwell's equations is utilized as delineated in multiple scholarly sources [17][18][19][20].…”

Section: Governing Equationsmentioning

confidence: 99%

See 2 more Smart Citations

Impact of Electromagnetic Stirring Roller Arrangement Pattern on Magnetic Field Simulation and Solidification Structure of PW800 Steel in the Second Cooling Zone

Xiao,

Zhang,

Liu

et al. 2024

Materials

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Strand electromagnetic stirring (S-EMS), a technique applied in the secondary cooling zone, enhances the solidification structure of casting slabs. This study examines how the arrangement pattern of electromagnetic stirring rollers—face-to-face, side-to-side or up-down misalignment produces this enhancement. It uses simulations to analyze the electromagnetic field distribution in these configurations. The findings demonstrate that: (1) The magnetic flux density distribution in the casting slab is related to the arrangement pattern of the electromagnetic stirring rollers. (2) The face-to-face arrangement produces the largest and most concentrated electromagnetic force compared to the other two arrangement patterns. (3) S-EMS can effectively improve the equiaxed grain ratio of casting slabs. Before and after EMS is turned on, casting slabs’ average equiaxed grain ratio goes up from 8% to 33%.

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“…Subsequently, the interplay between these induced currents

and the alternating magnetic field

results in the emergence of electromagnetic forces

where,

represents the magnetic field intensity, A/m;

represents the current density, A/m 2 ;

represents the electric field intensity, V/m 2 ;

represents the magnetic induction intensity, mT;

is the electrical induction intensity, C/m 2 ; σ is the conductivity, S/m; Re represents the real part of the complex number;

represents the conjugate complex of

; and

represents time-averaged electromagnetic force, N/m 3 .…”

Section: Model Descriptionsmentioning

confidence: 99%

Section: Governing Equationsmentioning

confidence: 99%

Section: Governing Equationsmentioning

confidence: 99%

See 1 more Smart Citation

Impact of Electromagnetic Stirring Roller Arrangement Pattern on Magnetic Field Simulation and Solidification Structure of PW800 Steel in the Second Cooling Zone

Xiao,

Zhang,

Liu

et al. 2024

Materials

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show abstract

“…So, it is possible to set an electromagnetic stir rer on the inlet chamber sidewall. The stirrer may provide physical effect of different types of alternating magnetic field (pulsating, alternating, rotating) on liquid metal [11]. In turn, it is possible to install an MHD-device for other purposes on the pouring chamber.…”

mentioning

confidence: 99%

Development of a Two-Chamber MHD Tundish for Metal Ca

Smirnov

Narivskiy

Smyrnov³

et al. 2021

Sci. innov.

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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. Ithas 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 volumehas 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.

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Modeling Electromagnetic Stirring Processes during Continuous Casting of Large-format Slabs

Cited by 2 publications

References 11 publications

Impact of Electromagnetic Stirring Roller Arrangement Pattern on Magnetic Field Simulation and Solidification Structure of PW800 Steel in the Second Cooling Zone

Impact of Electromagnetic Stirring Roller Arrangement Pattern on Magnetic Field Simulation and Solidification Structure of PW800 Steel in the Second Cooling Zone

Development of a Two-Chamber MHD Tundish for Metal Ca

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