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Influence of M-EMS on Fluid Flow and Initial Solidification in Slab Continuous Casting

A mathematical model coupled with electromagnetic field has been developed to simulate the transient turbulence flow and initial solidification in a slab continuous casting mold under different electromagnetic stirring (EMS) currents and casting speeds. Through comparing the magnetic flux density, f...

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Detalles Bibliográficos
Autores principales: Liu, Guoliang, Lu, Haibiao, Li, Bin, Ji, Chenxi, Zhang, Jiangshan, Liu, Qing, Lei, Zuosheng
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8269841/
https://www.ncbi.nlm.nih.gov/pubmed/34279252
http://dx.doi.org/10.3390/ma14133681
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author Liu, Guoliang
Lu, Haibiao
Li, Bin
Ji, Chenxi
Zhang, Jiangshan
Liu, Qing
Lei, Zuosheng
author_facet Liu, Guoliang
Lu, Haibiao
Li, Bin
Ji, Chenxi
Zhang, Jiangshan
Liu, Qing
Lei, Zuosheng
author_sort Liu, Guoliang
collection PubMed
description A mathematical model coupled with electromagnetic field has been developed to simulate the transient turbulence flow and initial solidification in a slab continuous casting mold under different electromagnetic stirring (EMS) currents and casting speeds. Through comparing the magnetic flux density, flow field with measured results, the reliability of the mathematical model is proved. The uniform index of solidified shell thickness has been introduced to judge the uniformity of the solidified shell. The results show that a horizonal recirculation flow has been generated when EMS is applied, and either accelerated or decelerated regions of flow field are formed in the liquid pool. Large EMS current and low casting speed may cause the plug flow near the mold narrow face and a suitable EMS current can benefit to the uniform growth of solidified shell. Meanwhile, an industrial test exhibits that EMS can weaken the level fluctuation and number density of inclusion. Overall, a rational EMS current range is gained, when the casting speed is 1.2 m/min, the rational EMS current is 500–600 A.
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spelling pubmed-82698412021-07-10 Influence of M-EMS on Fluid Flow and Initial Solidification in Slab Continuous Casting Liu, Guoliang Lu, Haibiao Li, Bin Ji, Chenxi Zhang, Jiangshan Liu, Qing Lei, Zuosheng Materials (Basel) Article A mathematical model coupled with electromagnetic field has been developed to simulate the transient turbulence flow and initial solidification in a slab continuous casting mold under different electromagnetic stirring (EMS) currents and casting speeds. Through comparing the magnetic flux density, flow field with measured results, the reliability of the mathematical model is proved. The uniform index of solidified shell thickness has been introduced to judge the uniformity of the solidified shell. The results show that a horizonal recirculation flow has been generated when EMS is applied, and either accelerated or decelerated regions of flow field are formed in the liquid pool. Large EMS current and low casting speed may cause the plug flow near the mold narrow face and a suitable EMS current can benefit to the uniform growth of solidified shell. Meanwhile, an industrial test exhibits that EMS can weaken the level fluctuation and number density of inclusion. Overall, a rational EMS current range is gained, when the casting speed is 1.2 m/min, the rational EMS current is 500–600 A. MDPI 2021-07-01 /pmc/articles/PMC8269841/ /pubmed/34279252 http://dx.doi.org/10.3390/ma14133681 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Liu, Guoliang
Lu, Haibiao
Li, Bin
Ji, Chenxi
Zhang, Jiangshan
Liu, Qing
Lei, Zuosheng
Influence of M-EMS on Fluid Flow and Initial Solidification in Slab Continuous Casting
title Influence of M-EMS on Fluid Flow and Initial Solidification in Slab Continuous Casting
title_full Influence of M-EMS on Fluid Flow and Initial Solidification in Slab Continuous Casting
title_fullStr Influence of M-EMS on Fluid Flow and Initial Solidification in Slab Continuous Casting
title_full_unstemmed Influence of M-EMS on Fluid Flow and Initial Solidification in Slab Continuous Casting
title_short Influence of M-EMS on Fluid Flow and Initial Solidification in Slab Continuous Casting
title_sort influence of m-ems on fluid flow and initial solidification in slab continuous casting
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8269841/
https://www.ncbi.nlm.nih.gov/pubmed/34279252
http://dx.doi.org/10.3390/ma14133681
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