Solidification morphology and segregation in continuously cast steel slab

Solidification and cooling of a continuously cast steel slab and the heating of the mould is a very complicated problem of transient heat and mass transfer. This original three-dimensional (3D) numerical model is capable of simulating the temperature field of a caster. The numerical computation has to take place simultaneously with the data acquisition—not only to confront it with the actual numerical model, but also to make it more accurate throughout the process. The utilization of the numerical model of solidification and cooling plays an indispensable role in practice. An important step in this analysis is to determine the necessary quantities in the course of concasting. The software enables data acquisition in real time, which is necessary for optimization. This is ensured by the correct process procedure: real process → input data → numerical analysis → optimization → correction of process. This procedure is necessary for optimization (i.e. maximization of the quality of the process)—especially when reacting to specific needs and conditions in the operation.

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Prediction of Equiaxed Crystal Ratio in Continuously Cast Steel Slab by Simplified Columnar-to-Equiaxed Transition Model

ISIJ International ◽

10.2355/isijinternational.46.921 ◽

2006 ◽

Vol 46 (6) ◽

pp. 921-930 ◽

Cited By ~ 19

Author(s):

Hiromitsu Shibata ◽

Seiji Itoyama ◽

Yasuo Kishimoto ◽

Shuji Takeuchi ◽

Hiroshi Sekiguchi

Keyword(s):

Cast Steel ◽

Transition Model ◽

Equiaxed Crystal ◽

Steel Slab ◽

Continuously Cast ◽

Columnar To Equiaxed Transition

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Characterisation and Modelling of Microsegregation in Low Carbon Continuously Cast Steel Slab

Proceedings of the 2013 International Symposium on Liquid Metal Processing & Casting ◽

10.1007/978-3-319-48102-9_46 ◽

2013 ◽

pp. 321-327

Author(s):

Dayue Zhang ◽

Martin Strangwood

Keyword(s):

Cast Steel ◽

Low Carbon ◽

Steel Slab ◽

Continuously Cast

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Relationship between the Primary Cast Structure and Distribution of Inclusions in a St52-3 Type Continuously Cast Steel Slab

Materials Science Forum ◽

10.4028/www.scientific.net/msf.537-538.345 ◽

2007 ◽

Vol 537-538 ◽

pp. 345-354 ◽

Cited By ~ 1

Author(s):

Gábor Fehérvári ◽

Balázs Verő ◽

Ibolya Kardos ◽

Zsolt Csepeli

Keyword(s):

Detrimental Effect ◽

Cast Steel ◽

Continuous Steel Casting ◽

Rolled Strip ◽

Solid Shell ◽

Misleading Information ◽

Liquid Phases ◽

Steel Slab ◽

Continuously Cast

The macrosegregation is one of the most recurrent phenomena in continuous steel casting of slabs. It often impedes the further processing and has detrimental effect on the quality of rolled strip. The macrosegregation can be explained by the interpretation of unit steps of solidification in continuous casting slabs as well as on the basis of the interaction of the inclusions at the interface of solid and liquid phases. Development of solid shell and interaction between growing dendrites and MnS segregation has been presented. Only the pushing effect could be the real cause of MnS segregation among the three possible interactive mechanisms. The sulphur print could give misleading information on sulphur segregation.

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