Analysis and verification of process variables as causes for macroinclusions and scrapping in a special steel melt shop

Detalhes bibliográficos
Autor(a) principal: Ferreira, Felipe Buboltz
Data de Publicação: 2020
Outros Autores: Rocha, Vinicius Cardoso da, Bielefeldt, Wagner Viana, Vilela, Antonio Cezar Faria
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRGS
Texto Completo: http://hdl.handle.net/10183/224516
Resumo: The technology used in manufacturing steel for mechanical constructions has made great progress in recent years, resulting in a remarkable reduction of the impurities in special steel. One of these impurities is known as macroinclusion, the presence of which can cause serious defects in the steel structure. In a melt shop, where the semi-finished product is formed, there are several variables that can cause the formation of impurities in the steel and must be controlled. Therefore, by analyzing the influence of the primary melt shop variables, including: the iron and manganese oxides of the ladle slag (FeO+MnO), the stopper rod level variation and the argon pressure in the shroud between ladle and tundish in continuous casting; it was possible to establish a relationship between scrap generation and these process variables, through the creation of an investigation method. As result it was possible to identify the scrapping relationship with the presence of high FeO and MnO contents in the slag, during ladle furnace starting operations, along with stopper rod level variation in the tundish.
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spelling Ferreira, Felipe BuboltzRocha, Vinicius Cardoso daBielefeldt, Wagner VianaVilela, Antonio Cezar Faria2021-07-27T04:33:20Z20202176-1515http://hdl.handle.net/10183/224516001128615The technology used in manufacturing steel for mechanical constructions has made great progress in recent years, resulting in a remarkable reduction of the impurities in special steel. One of these impurities is known as macroinclusion, the presence of which can cause serious defects in the steel structure. In a melt shop, where the semi-finished product is formed, there are several variables that can cause the formation of impurities in the steel and must be controlled. Therefore, by analyzing the influence of the primary melt shop variables, including: the iron and manganese oxides of the ladle slag (FeO+MnO), the stopper rod level variation and the argon pressure in the shroud between ladle and tundish in continuous casting; it was possible to establish a relationship between scrap generation and these process variables, through the creation of an investigation method. As result it was possible to identify the scrapping relationship with the presence of high FeO and MnO contents in the slag, during ladle furnace starting operations, along with stopper rod level variation in the tundish.application/pdfengTecnologia em metalurgia, materiais e mineração. São Paulo, SP. Vol. 17, n. 3, (2020), Art. e2285, 7 p.Aço : FabricaçãoAciariaMetalurgiaMacroinclusionsCloggingFeO+MnOSteelmakingAnalysis and verification of process variables as causes for macroinclusions and scrapping in a special steel melt shopinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/otherinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSTEXT001128615.pdf.txt001128615.pdf.txtExtracted Texttext/plain23949http://www.lume.ufrgs.br/bitstream/10183/224516/2/001128615.pdf.txtbfddc9ca1b38759921829618f2dcaff7MD52ORIGINAL001128615.pdfTexto completo (inglês)application/pdf1910444http://www.lume.ufrgs.br/bitstream/10183/224516/1/001128615.pdfe316acc800f05c3b5a9c2e7c089b2919MD5110183/2245162021-08-18 04:40:15.078171oai:www.lume.ufrgs.br:10183/224516Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2021-08-18T07:40:15Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv Analysis and verification of process variables as causes for macroinclusions and scrapping in a special steel melt shop
title Analysis and verification of process variables as causes for macroinclusions and scrapping in a special steel melt shop
spellingShingle Analysis and verification of process variables as causes for macroinclusions and scrapping in a special steel melt shop
Ferreira, Felipe Buboltz
Aço : Fabricação
Aciaria
Metalurgia
Macroinclusions
Clogging
FeO+MnO
Steelmaking
title_short Analysis and verification of process variables as causes for macroinclusions and scrapping in a special steel melt shop
title_full Analysis and verification of process variables as causes for macroinclusions and scrapping in a special steel melt shop
title_fullStr Analysis and verification of process variables as causes for macroinclusions and scrapping in a special steel melt shop
title_full_unstemmed Analysis and verification of process variables as causes for macroinclusions and scrapping in a special steel melt shop
title_sort Analysis and verification of process variables as causes for macroinclusions and scrapping in a special steel melt shop
author Ferreira, Felipe Buboltz
author_facet Ferreira, Felipe Buboltz
Rocha, Vinicius Cardoso da
Bielefeldt, Wagner Viana
Vilela, Antonio Cezar Faria
author_role author
author2 Rocha, Vinicius Cardoso da
Bielefeldt, Wagner Viana
Vilela, Antonio Cezar Faria
author2_role author
author
author
dc.contributor.author.fl_str_mv Ferreira, Felipe Buboltz
Rocha, Vinicius Cardoso da
Bielefeldt, Wagner Viana
Vilela, Antonio Cezar Faria
dc.subject.por.fl_str_mv Aço : Fabricação
Aciaria
Metalurgia
topic Aço : Fabricação
Aciaria
Metalurgia
Macroinclusions
Clogging
FeO+MnO
Steelmaking
dc.subject.eng.fl_str_mv Macroinclusions
Clogging
FeO+MnO
Steelmaking
description The technology used in manufacturing steel for mechanical constructions has made great progress in recent years, resulting in a remarkable reduction of the impurities in special steel. One of these impurities is known as macroinclusion, the presence of which can cause serious defects in the steel structure. In a melt shop, where the semi-finished product is formed, there are several variables that can cause the formation of impurities in the steel and must be controlled. Therefore, by analyzing the influence of the primary melt shop variables, including: the iron and manganese oxides of the ladle slag (FeO+MnO), the stopper rod level variation and the argon pressure in the shroud between ladle and tundish in continuous casting; it was possible to establish a relationship between scrap generation and these process variables, through the creation of an investigation method. As result it was possible to identify the scrapping relationship with the presence of high FeO and MnO contents in the slag, during ladle furnace starting operations, along with stopper rod level variation in the tundish.
publishDate 2020
dc.date.issued.fl_str_mv 2020
dc.date.accessioned.fl_str_mv 2021-07-27T04:33:20Z
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
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dc.identifier.uri.fl_str_mv http://hdl.handle.net/10183/224516
dc.identifier.issn.pt_BR.fl_str_mv 2176-1515
dc.identifier.nrb.pt_BR.fl_str_mv 001128615
identifier_str_mv 2176-1515
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dc.relation.ispartof.pt_BR.fl_str_mv Tecnologia em metalurgia, materiais e mineração. São Paulo, SP. Vol. 17, n. 3, (2020), Art. e2285, 7 p.
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