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Rupture Strength of some Mould Flux Slag Films relevant to Swedish Continuous Casting Practice
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Materials Process Science.
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Materials Process Science.
2008 (English)Article in journal (Refereed) Published
Abstract [en]

In this paper, the high temperature rupture strengths of some solid mould flux slag films in Swedish continuous casting processes are presented. The apparatus, designed and constructed in the present laboratory is based on the principle that the solidified film of the mould flux slag is subjected to elongation stress at temperatures below the solidus points of the fluxes. The rupture strength tests were conducted in air. The results indicate that the rupture strength is dependent on the extent of polymerization of the silicate network. The results of Raman spectra studies of the mould flux slags used in the present work were corroborated by estimations of the NBO/T ratios of the slags. It was found that lower NBO/T ratios in the slag led to higher rupture strengths. Earlier measurements of the viscosities, thermal diffusivities as well as stress relaxation results for the same slags followed a similar trend indicating the dependency of these properties on the slag structure and a clear link between thermophysical and mechanical properties of slags. The results are expected to provide some basic guidelines to develop the next-generation mould flux and modelling of the continuous casting process.

Place, publisher, year, edition, pages
2008. Vol. 79, no 11, 835-838 p.
Keyword [en]
tensile test, rupture strength, mould flux, structure of slag
Identifiers
URN: urn:nbn:se:kth:diva-18001DOI: 10.2374/sri08sp041ISI: 000261160600005Scopus ID: 2-s2.0-57049100459OAI: oai:DiVA.org:kth-18001DiVA: diva2:336046
Note
QC 20100525Available from: 2010-08-05 Created: 2010-08-05Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
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  • de-DE
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  • nn-NB
  • sv-SE
  • Other locale
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Output format
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