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Thoughts about the Initial Solidification Process during Continuous Casting of Steel
KTH, Superseded Departments, Casting of Metals.
KTH, Superseded Departments, Casting of Metals.
2002 (Swedish)In: Scandinavian journal of metallurgy, ISSN 0371-0459, E-ISSN 1600-0692, Vol. 31, 292-297 p.Article in journal (Other academic) Published
Abstract [en]

The initial solidification during continuous casting is very important for the surface quality of the strand. Oscillation marks are formed by the movement of the mould. One mainly distinguishes between two different types of marks, namely folding marks and overflow marks. The formation of these can be described by the heat flow and the surface tension balance. A theoretical analysis outlining the most important parameters controlling the formation of these marks is presented. A metallographic analysis of the formation was also performed. The theory and observations have been used to analyse the effect of casting speed and oscillation frequency on the formation of different types of marks. It is shown that a meniscus is formed at the top of the growing shell. The maximum height of the meniscus determines the ideal distance between the marks. The mould frequency is related to this height. A frequency that is far from ideal causes overflow marks and folding marks with macrosegregation and cracks. The distance between the marks is, in such cases, not constant. The depth of the marks is calculated from the heat flow and the surface tension balance.

Place, publisher, year, edition, pages
2002. Vol. 31, 292-297 p.
Keyword [en]
Continuous casting, Oscillation marks
National Category
Metallurgy and Metallic Materials Materials Engineering
Identifiers
URN: urn:nbn:se:kth:diva-24600DOI: 10.1034/j.1600-0692.2002.00519.xISI: 000178481100002OAI: oai:DiVA.org:kth-24600DiVA: diva2:352179
Note
QC 20110203Available from: 2010-09-18 Created: 2010-09-18 Last updated: 2017-12-12Bibliographically approved
In thesis
1. Influence of Mould Flux Properties on Early Solidification in Continuous Casting
Open this publication in new window or tab >>Influence of Mould Flux Properties on Early Solidification in Continuous Casting
2010 (English)Doctoral thesis, comprehensive summary (Other academic)
Place, publisher, year, edition, pages
Stockholm: KTH Royal Institute of Technology, 2010. v, 47 p.
National Category
Metallurgy and Metallic Materials
Identifiers
urn:nbn:se:kth:diva-41545 (URN)978-91-7415-720-8 (ISBN)
Public defence
2010-10-07, F3, Lindstedtsvägen 26, KTH, Stockholm, 10:00 (English)
Opponent
Supervisors
Note
QC 20110929Available from: 2011-09-29 Created: 2011-09-29 Last updated: 2011-09-29Bibliographically approved

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  • apa
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