Influence of Electromagnetic Stirring on the Amount of Equiaxed Solidification during Continuous Casting

Sebastian Christoph Michelic

Research output: ThesisDiploma Thesis

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Abstract

The formation of centre segregations during the continuous casting of high carbon steels detrimentally affects the product quality. An increasing fraction of equiaxed solidification has proven most advantageous for a minimisation of these segregations. This can be attained by either decreasing the steel superheat or by the application of mould electromagnetic stirring. In this thesis different approaches for a modelling of the equiaxed solidification are assessed. Hereby the mechanism of dendrite fragmentation is considered on the one hand, and heterogenous nucleation on the other. On the basis of these approaches, a model for a prognosis of the fraction of equiaxed solidification is implemented into an existing solidification model. With the use of parallelly conducted plant trials at a continuous casting plant, first estimates of the significance of such a model are made.
Translated title of the contributionEinfluss des elektromagnetischen Rührens auf den Anteil ungerichteter Erstarrung beim Stranggießen von Stahl
Original languageEnglish
QualificationDipl.-Ing.
Supervisors/Advisors
  • Krieger, Wilfried, Supervisor (internal)
  • Bernhard, Christian, Co-Supervisor (internal)
Award date15 Dec 2006
Publication statusPublished - 2006

Bibliographical note

embargoed until null

Keywords

  • Continuous Casting Electromagnetic Stirring Modelling

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