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STRÁNSKÝ, K. KAVIČKA, F. DOBROVSKÁ, J. MASARIK, M. ŠTĚTINA, J. SEKANINA, B.
Original Title
Heterogeneity of Continuously Cast Steel Slab Shortly Before Breakout
Type
conference paper
Language
English
Original Abstract
The paper presents heterogeneous chemical composition of the steel slab, which was determined during short-time operation of continuous casting machine after flying tundish change. Before this exchange the steel A was cast (0.41 wt.% C and 0.95 wt.% Cr), shortly after the exchange continuous casting of the steel B (0.17 wt.% C and 0.70 wt.% Cr) started. After 20 minutes the continuous casting machine automatically stopped, because in the straightening zone, between the 7th and the 8th segment a breakout had occurred. Part of the slab was taken from the place of breakout for more precise determination of the position of breakout. It served also for taking the test samples for analysis of local chemical composition. It was expected that basic information on chemical heterogeneity of both steels A and B will be obtained, as well as information on exchange of mass between these two steels, which occurred some 20 minutes before stopping of the continuous casting machine. The reason was that structural state of both steels contained at the moment of breakout both solid and liquid phases. Intermixing zone enabled comparatively rapid mixing of masses of both steels A and B. Apart from obtaining basic experimental concept of chemical heterogeneity of continuous cast slab connected with breakout it was expected that it would be possible to make a semi quantitative evaluation of the extent of mixing of both melts A and B in this very short time interval.
Keywords
concast slab, chemical composition, heterogeneity, breakout
Authors
STRÁNSKÝ, K.; KAVIČKA, F.; DOBROVSKÁ, J.; MASARIK, M.; ŠTĚTINA, J.; SEKANINA, B.
RIV year
2012
Released
23. 5. 2012
Publisher
Tanger
Location
Ostrava
ISBN
978-80-87294-29-1
Book
Metal 2012 Conference proceedings abstracts, CD-ROM
Edition
Edition number
1
Pages from
148
Pages to
153
Pages count
6
BibTex
@inproceedings{BUT92344, author="Karel {Stránský} and František {Kavička} and Jana {Dobrovská} and Miloš {Masarik} and Josef {Štětina} and Bohumil {Sekanina}", title="Heterogeneity of Continuously Cast Steel Slab Shortly Before Breakout", booktitle="Metal 2012 Conference proceedings abstracts, CD-ROM", year="2012", series="Tanger", number="1", pages="148--153", publisher="Tanger", address="Ostrava", isbn="978-80-87294-29-1" }