Show simple item record

dc.contributor.authorKlug, Jeferson Leandropt_BR
dc.contributor.authorHagemann, Renépt_BR
dc.contributor.authorHeck, Nestor Cezarpt_BR
dc.contributor.authorVilela, Antonio Cezar Fariapt_BR
dc.contributor.authorScheller, Piotr Romanpt_BR
dc.date.accessioned2021-01-14T04:10:30Zpt_BR
dc.date.issued2012pt_BR
dc.identifier.issn2176-1515pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/217286pt_BR
dc.description.abstractThe elimination of fluorine from slags is necessary because F-bearing materials pollute the environment and cause machinery corrosion at steelworks. Regarding the development of F-free mould slags for slab casting, the main problem is how to control the heat transfer between steel shell and mould. In commercial products the heat transfer control is obtained through the crystallisation of cuspidine (3CaO.2SiO2 .CaF2 ) from mould slag. Thus, the fluorine-free slag which would be used as the substitute must show similar crystallisation behaviour. This paper shows results of a cooperation work between Technische Universität Bergakademie Freiberg and Universidade Federal do Rio Grande do Sul. Ti-bearing slags were studied through the Single Hot Thermocouple Technique, building time-temperature-transformation (TTT) diagrams. The results indicate that the system CaO-SiO2 -TiO2 -Na2 O can be used as substitute for F-bearing slags, regarding crystallisation behaviour, since the incubation times at TTT diagram can be similar to commercial products. This is possible because addition of Na2 O shorten intensely the incubation times from the CaO-SiO2 -TiO2 slag system.en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoengpt_BR
dc.relation.ispartofTecnologia em metalurgia, materiais e mineração. São Paulo, SP. Vol. 9, n. 1 (jan./mar. 2012), p. 30-36pt_BR
dc.rightsOpen Accessen
dc.subjectMould slagsen
dc.subjectLingotamento contínuopt_BR
dc.subjectSlab castingen
dc.subjectAçopt_BR
dc.subjectFundiçãopt_BR
dc.subjectHot thermocouple techniqueen
dc.subjectMoldespt_BR
dc.subjectTTT diagramsen
dc.titleFluorine-free mould slags for slab casting : utilisation of the hot thermocouple technique to build TTT diagramspt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb000851818pt_BR
dc.type.originNacionalpt_BR


Files in this item

Thumbnail
   

This item is licensed under a Creative Commons License

Show simple item record