Numerical Simulation of Fluid Flow, Solidification, and Solute Distribution in Billets under Combined Mold and Final Electromagnetic Stirring
In this study, a three-dimensional segmented coupled model for continuous casting billets under combined mold and final electromagnetic stirring (M-EMS, F-EMS) was developed. The model was verified by comparing carbon segregation in billets with and without EMS through plant experiments. The finding...
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MDPI AG
2024-01-01
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| Online Access: | https://www.mdpi.com/1996-1944/17/2/530 |
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| author | Zhenhua Feng Guifang Zhang Pengchao Li Peng Yan |
| author_facet | Zhenhua Feng Guifang Zhang Pengchao Li Peng Yan |
| author_sort | Zhenhua Feng |
| collection | DOAJ |
| description | In this study, a three-dimensional segmented coupled model for continuous casting billets under combined mold and final electromagnetic stirring (M-EMS, F-EMS) was developed. The model was verified by comparing carbon segregation in billets with and without EMS through plant experiments. The findings revealed that both M-EMS and F-EMS induce tangential flow in molten steel, impacting solidification and solute distribution processes within the billet. For M-EMS, with operating parameters of 250A-2Hz, the maximum tangential velocity (velocity projected onto the cross-section) was observed at the liquid phase’s edge. For F-EMS, with operating parameters of 250A-6Hz, the maximum tangential velocity occurred at <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mrow><mi>f</mi></mrow><mrow><mi>l</mi></mrow></msub><mo>=</mo><mn>0.7</mn></mrow></semantics></math></inline-formula>. Furthermore, F-EMS accelerated heat transfer in the liquid phase, reducing the central liquid fraction from 0.93 to 0.85. M-EMS intensified the washing effect of molten steel on the solidification front, resulting in the formation of negative segregation within the mold. F-EMS significantly improved the centerline segregation issue, reducing carbon segregation from 1.15 to 1.02. Experimental and simulation results, with and without EMS, were in good agreement, indicating that M+F-EMS leads to a more uniform solute distribution within the billet, with a pronounced improvement in centerline segregation. |
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| id | doaj.art-9deb69bcd625463cbbd986195bcc4eb8 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-08T10:42:27Z |
| publishDate | 2024-01-01 |
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| series | Materials |
| spelling | doaj.art-9deb69bcd625463cbbd986195bcc4eb82024-01-26T17:30:50ZengMDPI AGMaterials1996-19442024-01-0117253010.3390/ma17020530Numerical Simulation of Fluid Flow, Solidification, and Solute Distribution in Billets under Combined Mold and Final Electromagnetic StirringZhenhua Feng0Guifang Zhang1Pengchao Li2Peng Yan3Faculty of Metallurgy and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, ChinaFaculty of Metallurgy and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, ChinaFaculty of Metallurgy and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, ChinaFaculty of Metallurgy and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, ChinaIn this study, a three-dimensional segmented coupled model for continuous casting billets under combined mold and final electromagnetic stirring (M-EMS, F-EMS) was developed. The model was verified by comparing carbon segregation in billets with and without EMS through plant experiments. The findings revealed that both M-EMS and F-EMS induce tangential flow in molten steel, impacting solidification and solute distribution processes within the billet. For M-EMS, with operating parameters of 250A-2Hz, the maximum tangential velocity (velocity projected onto the cross-section) was observed at the liquid phase’s edge. For F-EMS, with operating parameters of 250A-6Hz, the maximum tangential velocity occurred at <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mrow><mi>f</mi></mrow><mrow><mi>l</mi></mrow></msub><mo>=</mo><mn>0.7</mn></mrow></semantics></math></inline-formula>. Furthermore, F-EMS accelerated heat transfer in the liquid phase, reducing the central liquid fraction from 0.93 to 0.85. M-EMS intensified the washing effect of molten steel on the solidification front, resulting in the formation of negative segregation within the mold. F-EMS significantly improved the centerline segregation issue, reducing carbon segregation from 1.15 to 1.02. Experimental and simulation results, with and without EMS, were in good agreement, indicating that M+F-EMS leads to a more uniform solute distribution within the billet, with a pronounced improvement in centerline segregation.https://www.mdpi.com/1996-1944/17/2/530numerical simulationbilletselectromagnetic stirringfluid flowcarbon segregation |
| spellingShingle | Zhenhua Feng Guifang Zhang Pengchao Li Peng Yan Numerical Simulation of Fluid Flow, Solidification, and Solute Distribution in Billets under Combined Mold and Final Electromagnetic Stirring Materials numerical simulation billets electromagnetic stirring fluid flow carbon segregation |
| title | Numerical Simulation of Fluid Flow, Solidification, and Solute Distribution in Billets under Combined Mold and Final Electromagnetic Stirring |
| title_full | Numerical Simulation of Fluid Flow, Solidification, and Solute Distribution in Billets under Combined Mold and Final Electromagnetic Stirring |
| title_fullStr | Numerical Simulation of Fluid Flow, Solidification, and Solute Distribution in Billets under Combined Mold and Final Electromagnetic Stirring |
| title_full_unstemmed | Numerical Simulation of Fluid Flow, Solidification, and Solute Distribution in Billets under Combined Mold and Final Electromagnetic Stirring |
| title_short | Numerical Simulation of Fluid Flow, Solidification, and Solute Distribution in Billets under Combined Mold and Final Electromagnetic Stirring |
| title_sort | numerical simulation of fluid flow solidification and solute distribution in billets under combined mold and final electromagnetic stirring |
| topic | numerical simulation billets electromagnetic stirring fluid flow carbon segregation |
| url | https://www.mdpi.com/1996-1944/17/2/530 |
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