Effect of ladle slag of the previous heat on the number of non-metallic inclusions in ladle treatment of tool steel
2011 (English)In: Ironmaking and Steelmaking, ISSN 0301-9233, Vol. 38, no 8, 584-589 p.Article in journal (Other academic) Published
Nine series of industrial trials were carried out using the same ladle in each series to examine the effect of ladle slag on the number of non-metallic inclusions in the next heat. Steel and slag samples were taken after ladle vacuum treatment for chemical composition analysis. Samples of the final steel product were examined to determine the number of non-metallic inclusions. It was found that the number of inclusions increased with SiO(2) content of the ladle slag in the previous heat. No clear trends were found for the effects of viscosity and MgO activity of the previous slag on the number of inclusions. Theoretical analysis based on the experimental results suggested that the formation of 2CaO.SiO(2) followed, but the dusting of the compound made the refractory more porous, which was reasonable for the number of non-metallic inclusions.
Place, publisher, year, edition, pages
2011. Vol. 38, no 8, 584-589 p.
Ladle treatment; Ladle glaze; Slag; Non-metallic inclusions; Tool steel
IdentifiersURN: urn:nbn:se:kth:diva-27727DOI: 10.1179/1743281211Y.0000000030ISI: 000296765900004ScopusID: 2-s2.0-80755168948OAI: oai:DiVA.org:kth-27727DiVA: diva2:380266
Updated from submitted to published.
QC 201201192010-12-212010-12-212012-01-19Bibliographically approved