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The effect of carbon content on solidification of steel in the continuous casting mold

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Abstract

This investigation examines the effect of steel carbon content on microsegregation and strand deformation during the first stage of solidification in the continuous casting mold. Calculation of microsegregation for phosphorus indicates a minimum at 0.10 wt pct C, and a maximum around 0.25 wt pct C of the decrease in solidus temperature. This leads to very different effective shell thicknesses and determines whether or not the strand shell can contract. As a result, mainly steels around 0.10 wt pct C can produce a finite gap in the early stages of strand formation, explaining the pronounced waviness of the surface of such steels. On the other hand, steels with more than 0.20 wt pct C are forced by ferrostatie pressure to remain in contact with the mold wall leading to uniform shell growth and smooth strand surfaces but also undergoing enhanced mold friction.

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Authors and Affiliations

  1. CONCAST AG, CH-8027, Zürich, Switzerland

    M. Wolf (Manager Process Technology)

  2. Swiss Federal Institute of Technology, CH-1007, Lausanne, Switzerland

    W. Kurz (Professor Department of Materials Engineering)

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  1. M. Wolf
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  2. W. Kurz
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Wolf, M., Kurz, W. The effect of carbon content on solidification of steel in the continuous casting mold. Metall Trans B 12, 85–93 (1981). https://doi.org/10.1007/BF02674761

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  • DOI: https://doi.org/10.1007/BF02674761

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