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High-speed continuous casting of peritectic carbon steels
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Materials Processing.
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Materials Processing.
2005 (English)In: Materials Science & Engineering: A, ISSN 0921-5093, Vol. 413, 2-9 p.Article in journal (Refereed) Published
Abstract [en]

Productivity of an integrated steel plant is improved by high-speed casting of hypo-peritectic steels that makes the productivity of caster meet basic oxygen furnace. In high-speed casting, however, strands of the steels tending to form cracks on the shell in the mold, require off-line conditioning that limits the plant productivity and premium yield. Hypo-peritectic transformation occurring on solidification in mold results in irregular shell-surface roughness that causes non-uniform heat transfer to the mold, causing local lifting of the shell from the mold, recalescence, and surface cracks. Influential factors are summarized on the development of the surface roughness, the non-uniform heat transfer and the decline of mechanical properties of the shell upon recalesce. Effective means are presented to reduce the non-uniformity and the cracks at high casting speeds by controlling the properties of mold flux film infiltrating into the solidifying shell/mold boundary.

Place, publisher, year, edition, pages
2005. Vol. 413, 2-9 p.
Keyword [en]
continuous casting, peritectic solidification, surface defect, mold flux, heat transfer, mold flux film, heat-transfer, behavior
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:kth:diva-15272DOI: 10.1016/j.msea.2005.08.169ISI: 000234202900002Scopus ID: 2-s2.0-29444436464OAI: oai:DiVA.org:kth-15272DiVA: diva2:333313
Note
QC 20100525 QC 20111012Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2011-10-12Bibliographically approved

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