Effect of dynamic formation of multiphase slag skin on heat transfer and magneto-hydrodynamic flow in electroslag remelting process
During the electroslag remelting (ESR) process, the effect of dynamic formation of slag skin on magneto-hydrodynamic multiphase flow and temperature field is studied using a 2-D axisymmetric model. The electromagnetic field is described by user-defined functions. The dynamic formation and distributi...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-07-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785423012917 |
| _version_ | 1797745259325685760 |
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| author | Fang Wang Jianpeng Tan Zhongqiu Liu Jakov Baleta Baokuan Li |
| author_facet | Fang Wang Jianpeng Tan Zhongqiu Liu Jakov Baleta Baokuan Li |
| author_sort | Fang Wang |
| collection | DOAJ |
| description | During the electroslag remelting (ESR) process, the effect of dynamic formation of slag skin on magneto-hydrodynamic multiphase flow and temperature field is studied using a 2-D axisymmetric model. The electromagnetic field is described by user-defined functions. The dynamic formation and distribution of multiphase slag skin, as well as the interface between slag and metal, are investigated by using the volume of fluid (VOF) model and the dynamic meshing method. Especially, the effect of slag skin/air gap on heat transfer characteristics is considered and developed by user-defined functions. The results show that the thickness of slag skin at the interface between slag and metal increases as the axial distance from free surface of slag rises, reaching a maximum of about 25 mm. With the height of ingot increasing, the thickness of slag skin drops to 17 mm. When the current changes from 2.0 kA to 3.0 KA in the ESR process, the current density, Joule heat, velocity and temperature increases. In the meanwhile, the slag skin becomes thinner and the melt pool becomes deeper. The vibration of electrode has a weak effect on the formation behavior of slag skin, and only has effects on formation of metal droplet and velocity field. |
| first_indexed | 2024-03-12T15:20:49Z |
| format | Article |
| id | doaj.art-6f4f7f3b302a42b8ba96eebdb09a843d |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-03-12T15:20:49Z |
| publishDate | 2023-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-6f4f7f3b302a42b8ba96eebdb09a843d2023-08-11T05:33:21ZengElsevierJournal of Materials Research and Technology2238-78542023-07-012516961708Effect of dynamic formation of multiphase slag skin on heat transfer and magneto-hydrodynamic flow in electroslag remelting processFang Wang0Jianpeng Tan1Zhongqiu Liu2Jakov Baleta3Baokuan Li4Key Laboratory for Ecological Metallurgy of Multimetallic Ores (Ministry of Education), Northeastern University, Shenyang, 110819, China; School of Metallurgy, Northeastern University, Shenyang, 110819, China; Corresponding author.School of Metallurgy, Northeastern University, Shenyang, 110819, ChinaSchool of Metallurgy, Northeastern University, Shenyang, 110819, China; Corresponding author.Faculty of Metallurgy, University of Zagreb, Sisak, 44 103, CroatiaSchool of Metallurgy, Northeastern University, Shenyang, 110819, ChinaDuring the electroslag remelting (ESR) process, the effect of dynamic formation of slag skin on magneto-hydrodynamic multiphase flow and temperature field is studied using a 2-D axisymmetric model. The electromagnetic field is described by user-defined functions. The dynamic formation and distribution of multiphase slag skin, as well as the interface between slag and metal, are investigated by using the volume of fluid (VOF) model and the dynamic meshing method. Especially, the effect of slag skin/air gap on heat transfer characteristics is considered and developed by user-defined functions. The results show that the thickness of slag skin at the interface between slag and metal increases as the axial distance from free surface of slag rises, reaching a maximum of about 25 mm. With the height of ingot increasing, the thickness of slag skin drops to 17 mm. When the current changes from 2.0 kA to 3.0 KA in the ESR process, the current density, Joule heat, velocity and temperature increases. In the meanwhile, the slag skin becomes thinner and the melt pool becomes deeper. The vibration of electrode has a weak effect on the formation behavior of slag skin, and only has effects on formation of metal droplet and velocity field.http://www.sciencedirect.com/science/article/pii/S2238785423012917Electroslag remelting processFormation of slag skinHeat transferMelting |
| spellingShingle | Fang Wang Jianpeng Tan Zhongqiu Liu Jakov Baleta Baokuan Li Effect of dynamic formation of multiphase slag skin on heat transfer and magneto-hydrodynamic flow in electroslag remelting process Journal of Materials Research and Technology Electroslag remelting process Formation of slag skin Heat transfer Melting |
| title | Effect of dynamic formation of multiphase slag skin on heat transfer and magneto-hydrodynamic flow in electroslag remelting process |
| title_full | Effect of dynamic formation of multiphase slag skin on heat transfer and magneto-hydrodynamic flow in electroslag remelting process |
| title_fullStr | Effect of dynamic formation of multiphase slag skin on heat transfer and magneto-hydrodynamic flow in electroslag remelting process |
| title_full_unstemmed | Effect of dynamic formation of multiphase slag skin on heat transfer and magneto-hydrodynamic flow in electroslag remelting process |
| title_short | Effect of dynamic formation of multiphase slag skin on heat transfer and magneto-hydrodynamic flow in electroslag remelting process |
| title_sort | effect of dynamic formation of multiphase slag skin on heat transfer and magneto hydrodynamic flow in electroslag remelting process |
| topic | Electroslag remelting process Formation of slag skin Heat transfer Melting |
| url | http://www.sciencedirect.com/science/article/pii/S2238785423012917 |
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