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Experimental and Numerical Investigations on Hot Tearing during Continuous Casting of Steel

Experimentelle und numerische Betrachtung der Entstehung von Heißrissseigerungen beim Stranggießen von Stahl

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Abstract

This paper focuses on hot tearing in continuous casting of steel and the experimental as well as numerical prediction of the hot tearing susceptibility. As a preliminary point, the current understanding of the appearance of this kind of defects and the resultant requirements for numerical und experimental hot tearing simulation will be briefly summarized. The next section describes the experimental determination of critical strain values by means of the proven SSCT (Submerged Split Chill Tensile) test and their implementation into a 1D-FV-solidification model (one-dimensional-finite-volume) developed in-house. Exemplarily, the model will be applied to the casting of two medium carbon steel grades on a slab casting machine.

Zusammenfassung

Die vorliegende Veröffentlichung beleuchtet einleitend das heutige Verständnis des Erscheinungsbildes und des Bildungsmechanismus von Heißrissen im Stranggießprozess. Daraus werden die Forderungen an die numerische und experimentelle Simulation dieser häufig auftretenden Fehlerform abgeleitet. Der experimentelle Teil beschreibt die Ermittlung von kritischen Dehnungen im SSCT–Test (Submerged-Split-Chill-Tensile) und die Umsetzung dieser Kennwerte in ein 1D-FV-Erstarrungsmodell (Eindimensionales-Finite-Volumen). Abschließend wird das Modell auf das Beispiel des Vergießens zweier mittelkohliger Stähle auf einer Brammenstranggießanlage angewendet.

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Acknowledgements

Financial support by the Austrian Federal Government (in particular by the Bundesministerium für Verkehr, Innovation und Technologie and Bundesministerium für Wissenschaft, Forschung und Wirtschaft) represented by Österreichische Forschungsförderungsgesellschaft mbH and the Styrian and the Tyrolean Provincial Governments, represented by Steirische Wirtschaftsförderungsgesellschaft mbH and Standortagentur Tirol, within the framework of the COMET Funding Programme is gratefully acknowledged.

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Authors and Affiliations

  1. Montanuniversitaet Leoben, Leoben, Austria

    Gregor Arth, Robert Pierer & Christian Bernhard

  2. voestalpine Stahl GmbH, Linz, Austria

    Sergiu Ilie

  3. Inteco Special Melting Technologies GmbH, Bruck a.d. Mur, Austria

    Robert Pierer

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  1. Gregor Arth
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  2. Sergiu Ilie
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  3. Robert Pierer
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  4. Christian Bernhard
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Correspondence to Gregor Arth.

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Arth, G., Ilie, S., Pierer, R. et al. Experimental and Numerical Investigations on Hot Tearing during Continuous Casting of Steel. Berg Huettenmaenn Monatsh 160, 103–108 (2015). https://doi.org/10.1007/s00501-015-0345-6

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  • DOI: https://doi.org/10.1007/s00501-015-0345-6

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