STUDY ABOUT THE ORIGIN OF INCLUSIONS IN THE TUNDISH OF TERNIUM SIDERAR
For the production of steels with high quality standards is essential to know accurately the different sources that generate inclusions, in order to optimize the steelmaking practices and to minimize their frequency. The use of tracer elements in the slag has shown an effective tool to determine t...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Associação Brasileira de Metalurgia, Materiais e Mineração
2012-12-01
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| Series: | Tecnologia em Metalurgia, Materiais e Mineração |
| Subjects: | |
| Online Access: | http://www.tecnologiammm.com.br/files/v9n4/v9n4a01.pdf |
| _version_ | 1827838639033286656 |
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| author | Alejandro Martín Juan Andres Méndez Michel Romero Gustavo Di Gresia Carlos Cicutti |
| author_facet | Alejandro Martín Juan Andres Méndez Michel Romero Gustavo Di Gresia Carlos Cicutti |
| author_sort | Alejandro Martín |
| collection | DOAJ |
| description | For the production of steels with high quality standards is essential to know accurately the different sources that
generate inclusions, in order to optimize the steelmaking practices and to minimize their frequency. The use of tracer
elements in the slag has shown an effective tool to determine the origin of inclusions in continuous casting slabs. In the
present study different experiences were performed using BaCO3
like a tracer in the tundish slag. Using this methodology
slab samples were taken at different times of the castings. The samples were exhaustively analyzed by optical microscopy
and SEM/EDS. The density, size distribution and composition of the inclusions observed were evaluated. The results of
this analysis revealed the presence of inclusions with Ba in the slab during the transitory state (ladle change). For another
hand, samples from the stationary state did not detect this type of inclusions. Ba inclusions occur most frequently in
advanced casting sequence and in those cases where the tundish level has a weight reduction during the ladle change.
These results suggest that the emulsification produced by the impact of the flow of liquid steel can generate inclusions.
The effect is more pronounced when there is a greater accumulation of slag in the tundish. Finally, various tests are
also performed using flow modifiers within the tundish, analyzing their impact on the generation and elimination of
non-metallic inclusions |
| first_indexed | 2024-03-12T07:07:47Z |
| format | Article |
| id | doaj.art-10f7c0ad50f2475b9295fc251cc540d2 |
| institution | Directory Open Access Journal |
| issn | 2176-1515 2176-1523 |
| language | English |
| last_indexed | 2024-03-12T07:07:47Z |
| publishDate | 2012-12-01 |
| publisher | Associação Brasileira de Metalurgia, Materiais e Mineração |
| record_format | Article |
| series | Tecnologia em Metalurgia, Materiais e Mineração |
| spelling | doaj.art-10f7c0ad50f2475b9295fc251cc540d22023-09-02T23:16:39ZengAssociação Brasileira de Metalurgia, Materiais e MineraçãoTecnologia em Metalurgia, Materiais e Mineração2176-15152176-15232012-12-0194265270http://dx.doi.org/10.4322/tmm.2012.047STUDY ABOUT THE ORIGIN OF INCLUSIONS IN THE TUNDISH OF TERNIUM SIDERARAlejandro Martín0Juan Andres Méndez 1Michel Romero2Gustavo Di Gresia3Carlos Cicutti4Ingeniero Metalurgico, Investigador sector Acería, Instituto Argentino de Siderurgia,Ingeniero em Materiales, Investigador sector Acería, Centro de Investigación Industrial, Tenaris Siderca, Ingeniero Metalurgico, Investigador sector Acería, Instituto Argentino de SiderurgiaIngeniero Mecanico, Tecnólogo Colada Continua, Ternium-Siderar, Planta General Savio,Dr. em Ciência de los Materiales, Tecnólogo Colada Continua, Centro de Investigación Industrial, Tenaris Siderca,For the production of steels with high quality standards is essential to know accurately the different sources that generate inclusions, in order to optimize the steelmaking practices and to minimize their frequency. The use of tracer elements in the slag has shown an effective tool to determine the origin of inclusions in continuous casting slabs. In the present study different experiences were performed using BaCO3 like a tracer in the tundish slag. Using this methodology slab samples were taken at different times of the castings. The samples were exhaustively analyzed by optical microscopy and SEM/EDS. The density, size distribution and composition of the inclusions observed were evaluated. The results of this analysis revealed the presence of inclusions with Ba in the slab during the transitory state (ladle change). For another hand, samples from the stationary state did not detect this type of inclusions. Ba inclusions occur most frequently in advanced casting sequence and in those cases where the tundish level has a weight reduction during the ladle change. These results suggest that the emulsification produced by the impact of the flow of liquid steel can generate inclusions. The effect is more pronounced when there is a greater accumulation of slag in the tundish. Finally, various tests are also performed using flow modifiers within the tundish, analyzing their impact on the generation and elimination of non-metallic inclusionshttp://www.tecnologiammm.com.br/files/v9n4/v9n4a01.pdfInclusions; Tundishes; Slags. |
| spellingShingle | Alejandro Martín Juan Andres Méndez Michel Romero Gustavo Di Gresia Carlos Cicutti STUDY ABOUT THE ORIGIN OF INCLUSIONS IN THE TUNDISH OF TERNIUM SIDERAR Tecnologia em Metalurgia, Materiais e Mineração Inclusions; Tundishes; Slags. |
| title | STUDY ABOUT THE ORIGIN OF INCLUSIONS IN THE TUNDISH OF TERNIUM SIDERAR |
| title_full | STUDY ABOUT THE ORIGIN OF INCLUSIONS IN THE TUNDISH OF TERNIUM SIDERAR |
| title_fullStr | STUDY ABOUT THE ORIGIN OF INCLUSIONS IN THE TUNDISH OF TERNIUM SIDERAR |
| title_full_unstemmed | STUDY ABOUT THE ORIGIN OF INCLUSIONS IN THE TUNDISH OF TERNIUM SIDERAR |
| title_short | STUDY ABOUT THE ORIGIN OF INCLUSIONS IN THE TUNDISH OF TERNIUM SIDERAR |
| title_sort | study about the origin of inclusions in the tundish of ternium siderar |
| topic | Inclusions; Tundishes; Slags. |
| url | http://www.tecnologiammm.com.br/files/v9n4/v9n4a01.pdf |
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