Effects of Double-Axis Electromagnetic Stirring in Continuous Casting

Otake, Ryo; Yamada, Takahiro; Hirayama, Ryu; Fujisaki, Keisuke; Shimasaki, Shin Ichi; Shoji, Tetsuya

doi:10.1109/tmag.2008.2003149

Cited by 8 publications

(4 citation statements)

References 5 publications

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“…Electromagnetic processing of Materials (EPM) has been an important topic in materials science for more than 20 years. And some works have proved that the electromagnetic field can improve the quality of steel ingots and solidification structure effectively [1,2]. The research has proved that the solidification structure of austenitic stainless steel can be remarkably improved by low-frequency electromagnetic-field [3,4].…”

Section: Introductionmentioning

confidence: 99%

Effects of Electromagnetic Stirring on the Solidified Microstructure of Martensite Stainless Steel

Zhan

Wang

Jiang

et al. 2012

AMM

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In this text, the effect of electromagnetic stirring (EMS) on the quantities of the martensite stainless steel ingots was investigated by static casting experiment. The results of the experiment show that to compared with the traditional cast, the EMS can obviously improve the quantities of the martensite stainless steel ingots. By the EMS technique, the ratio of equiaxed grains greatly increased and when the current remains content, the ratio of equiaxed grain increases first and then decreases as the stirring frequency increasing. There is a maximum value at the 5Hz. With the EMS the carbon and the chromium in the ingots are better distributed. The segregation of C and Cr is inhabited. And also with the EMS, the grains of the martensite stainless steel ingots become finer and more homogeneity; consequently the appearance and distribution of the troostite in the ingots obviously changed: without the EMS the troostite distributes in net shape or block shape and with the EMS, the troostite distributes in the matrix dispersedly.

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Section: Introductionmentioning

confidence: 99%

Effects of Electromagnetic Stirring on the Solidified Microstructure of Martensite Stainless Steel

Zhan

Wang

Jiang

et al. 2012

AMM

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“…Electromagnetic stirring can make the continuous steel casting process more stable, reduce the rate of breakout, and increase the casting speed of the slab. At the same time, it can improve the quality of the product while increasing the output [1][2][3][4][5]. The power supply is the key equipment of electromagnetic stirring, and its current waveform quality and response speed directly affect the quality of continuously cast steel [6,7].…”

Section: Introductionmentioning

confidence: 99%

Research on the High Reliable Electromagnetic Stirring Power Supply

Xiang

Luo

et al. 2021

Applied Sciences

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A reconstructed topology with fault diagnosis and fault-tolerant control strategy of the two-phase quadrature power supply of an electromagnetic stirring system are proposed to improve the reliability of the system. First, if the back stage inverter is faulty, the topology will be reconstructed after the diagnosed fault. The reconstructed topology with the fault diagnosis can be applied twice. Additionally, a fault pulse reset method is proposed to form a fault-tolerant control strategy, for which the high-reliability electromagnetic stirring power supply does not need to switch the control algorithm before and after the failure. The reliability of the electromagnetic stirring power supply is improved greatly. Finally, simulations and experiments verify the correctness of the electromagnetic stirring power supply fault diagnosis algorithm, reconstruction topology, and its fault-tolerant control strategy proposed in this paper.

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“…The effect of these forces can lead to the improvement of solidified microstructures by columnar to equiaxed transformations [16]. Otake et al [17] developed a 3-D numerical model to investigate and predict the effects of double-axis electromagnetic stirring on the fluid flows within the mould region. The effect of a three-phase EMS on fluid flows, heat transfer, and inclusion trajectories have been studied by Haiqi and Miaoyong [18].…”

Section: Introductionmentioning

confidence: 99%

Numerical modelling of fluid flows in square billet moulds, using a new nozzle orientation in the presence of an in-mould rotary electromagnetic stirrer

Aboutalebi

Lapointe

D’amours

et al. 2018

Ironmaking & Steelmaking

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An electromagnetic field simulation along with a fluid flow analysis model were developed, to study the effect of the submerged entry nozzle's (SEN) angle of rotation, together with a rotational electromagnetic field, on the turbulent liquid steel flow within a curved, square mould of a billet continuous caster. The Realisable-k-ɛ turbulence model and the volume of fluid multiphase model were implemented, so as to simulate the effect of turbulent fluid flow on the shape of the top liquid steel meniscus. Similarly, the magnetic induction method was employed for simulating the effects of rotating magnetic fields on the flow patterns developed within the mould region. The predicted magnetic field and fluid flows were validated against previous experimental work. Predicted results demonstrated that fluid flows and the shape of the liquid steel meniscus could be significantly modified by changing the orientation of the SEN's ports in the presence of a lowfrequency rotating magnetic field.

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Effects of Double-Axis Electromagnetic Stirring in Continuous Casting

Cited by 8 publications

References 5 publications

Effects of Electromagnetic Stirring on the Solidified Microstructure of Martensite Stainless Steel

Effects of Electromagnetic Stirring on the Solidified Microstructure of Martensite Stainless Steel

Research on the High Reliable Electromagnetic Stirring Power Supply

Numerical modelling of fluid flows in square billet moulds, using a new nozzle orientation in the presence of an in-mould rotary electromagnetic stirrer

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