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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 11    No. 5    October 2001

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Solute distribution in columnar crystal
zone of  continuous casting billets
CHANG  Guo-wei(常国威)1,2,  ZHAO  Zeng-wu(赵增武)2,3
WANG  Jing-song(王静松)2,WANG  Wan-jun(王万军)2, WANG  Xin-hua(

1. Department of Materials and Chemical Engineering,
Liaoning Institute of Technology, Jinzhou 121001, P.R.China;
2. Metallurgy School, University of Science and
Technology Beijing, Beijing 100083, P.R.China;
3. Department of Metallurgy, Baotou University of Steel
and Iron Technology,Baotou 014010, P.R.China

Abstract: The periodic bending deformation in the direction of casting occurs at the liquid/solid interface of billet due to the roller supporting force and the pressure of molten metal in the process of continuous casting. Based on this fact, a qualitative expression of solute concentration in columnar crystal zone for continuous casting billet is established, which agrees with the experimental results basically. Therefore, it is favorable to gain a columnar structure with less segregation by adopting a caster with compactly distributed small rollers and enhancing the cooling intensity in secondary-cooling zone.

 

Key words:   solidification; segregation; continuous casting

ISSN 1672-7029
CN 43-1423/U

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