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Impact of slag-refractory lining reactions on the formation of inclusions in steel
KTH, Tidigare Institutioner, Materialvetenskap.
KTH, Tidigare Institutioner, Materialvetenskap.
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2004 (Engelska)Ingår i: Ironmaking & steelmaking, ISSN 0301-9233, E-ISSN 1743-2812, Vol. 31, nr 6, s. 514-518Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

The present study was carried out to investigate the impact of slag-refractory lining reactions on the formation of inclusions during ladle treatment of steel. The experiments were conducted on an industrial scale in the ladle at Uddeholm Tooling AB in Hagfors, Sweden. The inclusion chemistry and population during ladle treatment were studied along with the composition of the ladle glaze, taken from the ladle lining. The inclusions in the steel were classified into four groups according to the Swedish standard SS 111116. SEM/EDS analyses were carried out to identify the phases present in both the inclusions and the ladle glaze. The number of inclusions in the steel before deoxidation was found to increase with the ladle age, i.e. the number of times the ladle had been in use. A similar increase was also found after vacuum degassing and before casting. A great portion of inclusions before casting was found to be supplied by ladle glaze. This observation was further confirmed and explained by thermodynamic analysis. The present results show that ladle glaze is a major source of inclusions in the ladle at Uddeholm Tooling.

Ort, förlag, år, upplaga, sidor
2004. Vol. 31, nr 6, s. 514-518
Nyckelord [en]
slag-refractory lining reactions, ladle glaze, inclusions, inclusion chemistry, ladle treatment, ladle treatment, bof refractories, carbon
Nationell ämneskategori
Metallurgi och metalliska material
Identifikatorer
URN: urn:nbn:se:kth:diva-23973DOI: 10.1179/030192304225019360ISI: 000225997600014Scopus ID: 2-s2.0-10944220612OAI: oai:DiVA.org:kth-23973DiVA, id: diva2:342672
Anmärkning
QC 20100525 QC 20111101Tillgänglig från: 2010-08-10 Skapad: 2010-08-10 Senast uppdaterad: 2017-12-12Bibliografiskt granskad

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Totalt: 191 träffar
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