Control of mould level fluctuation through the modification of steel composition

Periodic mould level fluctuation (MLF) during slab casting is a bottleneck for upgrading the surface quality and casting speed especially for hypoperitectic (HP) or ultralow carbon steels. The uneven growth of the initially solidified shell is verified to be one of the important inducements to MLF d...

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Bibliographic Details
Published inInternational journal of minerals, metallurgy and materials Vol. 20; no. 2; pp. 138 - 145
Main Authors Li, Yang, Zhang, Xiao-huan, Lan, Peng, Zhang, Jia-quan
Format Journal Article
LanguageEnglish
Published Springer Berlin Heidelberg University of Science and Technology Beijing 01.02.2013
Springer Nature B.V
School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China
Subjects
Alloying elements
Ceramics
Characterization and Evaluation of Materials
Chemical composition
Chemistry and Materials Science
Composites
Corrosion and Coatings
Fluctuation
Glass
High strength low alloy steels
Low carbon steels
Materials Science
Mathematical analysis
Metallic Materials
Molds
Natural Materials
Optimization
Slab casting
Solidification
Steels
Surface properties
Surfaces and Interfaces
Thin Films
Tribology
low carbon steel
continuous casting
composition
optimization
solidification
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Summary:Periodic mould level fluctuation (MLF) during slab casting is a bottleneck for upgrading the surface quality and casting speed especially for hypoperitectic (HP) or ultralow carbon steels. The uneven growth of the initially solidified shell is verified to be one of the important inducements to MLF due to related unsteady bulging in the secondary cooling zone. It is shown that the solidification mode of steels and the contraction behavior can be modified through chemical composition optimization within given composition limits. For high strength low alloy (HSLA) steels, the actual peritectic points calculated by Thermo-Calc software may change remarkably with the slight variations of alloying element contents. Accordingly, the narrow limit of chemical composition of HP steels through optimization is proven to be one of the effective factors to control the popular MLF phenomenon during slab casting.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:1674-4799
1869-103X
DOI:10.1007/s12613-013-0705-8