Influence of electromagnetic stirrer position on fluid flow and solidification in continuous casting mold

Maurya, Ambrish; Jha, Pradeep Kumar

doi:10.1016/j.apm.2017.02.029

Cited by 66 publications

(60 citation statements)

References 33 publications

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“…Dong et al [19] developed a 3D MHD model considering flow field and solidification in mold and investigated the interactive effect of fluid flow and magnetic field in the billet continuous casting mold. Maurya and Jha [20] numerically studied the effect of M-EMS position on fluid flow and solidification in a billet continuous casting mold and indicated that the stirrer position had a significant effect on the formation of the solidified shell. Fang et al [21] numerically studied the effects of a SEN on flow and initial solidification in a 280 mm × 380 mm bloom continuous casting mold with EMS, and accordingly optimized the structure of SEN.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Fluid Flow, Heat Transfer, Species Transfer, and Solidification in Billet Continuous Casting Mold with M-EMS

Zhang

Luo

Chen

et al. 2019

Metals

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Electromagnetic stirring in mold (M-EMS) has been widely used in continuous casting process to improve the solidification quality of the steel strand. In the present study, a 3D multi-physical-field mathematical model was developed to predict the macro transport phenomena in continuous casting mold with M-EMS using ANSYS commercial software, and was adopted to investigate the effect of current intensity (0, 150, 200, and 240 A) on the heat, momentum, and species transports in the billet continuous casting mold with a size of 160 mm × 160 mm. The results show that when the M-EMS is on, the horizontal swirling flow appears and shifts the high-temperature zone upward. With the increase of current intensity, two swirling flows form on the longitudinal section of continuous casting mold and become more intensive, and the flow velocity of the molten steel at the solidification front increases. Thus, the wash effects of the fluid flow on the initial solidified shell become intensive, resulting in a thinner shell thickness at the mold exit and a significant negative segregation of carbon at the billet subsurface.

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Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Fluid Flow, Heat Transfer, Species Transfer, and Solidification in Billet Continuous Casting Mold with M-EMS

Zhang

Luo

Chen

et al. 2019

Metals

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show abstract

“…Maurya et al [20] have reported the effect of stirrer position on the fluid flow and solidification in the billet mold. However, few studies have focused on the effect of stirrer position on electromagnetic field distribution, fluid flow streamlines, temperature distribution, inclusion removal, and mold-level fluctuation in billet continuous casting.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation on Multiple Physical Fields Behaviors in Billet Continuous Casting with Different Stirrer Positions

Wang

Zong-hui

Zhu

2019

steel research int.

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A 3D coupled model considering electromagnetic field, flow field, heat transfer, and particle transport is developed to predict the effect of stirrer position on the magnetic field distribution, fluid flow streamlines, temperature distribution, and inclusion removal in 180 mm × 220 mm billet continuous casting process, and the effect of stirrer position on the mold‐level fluctuation and slag entrapment behavior is also studied based on the homogeneous model. The casting temperature of molten steel is 1750 K, and the casting speed of billet is 0.9 m min−1. The results indicate that as the stirrer center position is lowered, the maximum value of the magnetic induction intensity has almost no change, whereas the maximum value of the tangential electromagnetic force initially decreases followed by an increase. With the downward movement of stirrer center position, the decrease rate of central molten steel velocity slows down, and the range of the upper circulation flow zone increases. A lower stirrer center position increases the cooling of the billet and inclusion removal. When the stirrer center position is moved from 515 to 815 mm, the wave height of steel/slag interface decreases from 11.6 to 3.4 mm, and slag entrapment behavior gradually weakens.

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“…Sun and Zhang established a 3D and 2D hybrid model to simulate electromagnetic and solute transportation for the bloom continuous casting with M‐EMS and F‐EMS, and the macrosegregation development behavior is studied numerically. Maurya and Jha investigated the influence of electromagnetic stirrer position on fluid flow and solidification in continuous casting mold. They observed the formation of a gap in the re‐solidified shell with change in stirrer position.…”

Section: Introductionmentioning

confidence: 99%

Study on the Electromagnetic Field, Fluid Flow, and Solidification in a Bloom Continuous Casting Mold by Numerical Simulation

Peng

Tang

et al. 2018

steel research int.

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Based on the Maxwell's equations and low‐Reynolds number k−ϵ turbulence model, a coupled three‐dimensional numerical model has been developed to describe the electromagnetic field, fluid flow, and solidification in a bloom continuous casting mold with electromagnetic stirring (M‐EMS). The optimum frequency is obtained by calculating the maximum electromagnetic torque of the strand with consideration of mold tube shield effect. The effect of stirring current intensity on the turbulent flow, temperature distribution, and shell growth has been investigated numerically. According to the simulation results, the electromagnetic force with a circumferential distribution on the strand transverse section, and a swirling flow field along the axial direction of the strand are observed in the mold region with the application of M‐EMS. It is shown that the melt maximum swirling flow velocity decreases from 0.420 to 0.226 m s−1 and the flow field changes remarkably when solidification is involved in the model. With the current intensity increasing from 260 to 500 A, the swirling flow intensifies significantly, which prevents the superheated molten steel moving downwards to the liquid core and promotes the superheat dissipation in mold.

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Influence of electromagnetic stirrer position on fluid flow and solidification in continuous casting mold

Cited by 66 publications

References 33 publications

Numerical Simulation of Fluid Flow, Heat Transfer, Species Transfer, and Solidification in Billet Continuous Casting Mold with M-EMS

Numerical Simulation of Fluid Flow, Heat Transfer, Species Transfer, and Solidification in Billet Continuous Casting Mold with M-EMS

Numerical Simulation on Multiple Physical Fields Behaviors in Billet Continuous Casting with Different Stirrer Positions

Study on the Electromagnetic Field, Fluid Flow, and Solidification in a Bloom Continuous Casting Mold by Numerical Simulation

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