Abstract
During the twin-roll casting of strips, the heat exchange between the internally water-cooled shells and the metal has a great influence on the strip forming conditions, such as the sump depth, plastic flow, surface and centerline segregations, and run-out temperature of a strip, which determine the strip quality. In this study, laboratory-scale experiments were carried out on the twin-roll casting of strips made of the aluminum alloy EN AW-6082 with simultaneous temperature measurements at the shell surface and within the solidification-deformation zone. While the shell temperature was monitored with an infrared camera, a 0.5 mm diameter shell thermocouple was passed through the solidification-deformation zone after the thermal steady state was reached. Subsequently, a finite element numerical model of the laboratory-scale twin-roll casting trial was developed. An angle-dependent heat transfer coefficient was fitted to the experimental results, thereby indicating a spatial resolution of the heat transfer at the aluminum–shells interface.
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Acknowledgements
The authors thank the working group “Continuous Casting” of the Aluminium Deutschland e.V. (AD), until September 2021 GDA e.V., for support and fruitful discussions about the interpretation of the experimental and theoretical results. Furthermore, the authors thank the German Research Foundation (DFG) for financial support of project 418701707 within the scope of TRR 285. The Alsim model development is a joint industry project with support from Alcoa, Arconic, Hydro/Speira, and Novelis.
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Grydin, O., Mortensen, D., Neuser, M., Lindholm, D., Fjaer, H.G., Schaper, M. (2022). Numerical and Experimental Investigation of Heat Transfer in the Solidification-Deformation Zone During Twin-Roll Casting of Aluminum Strips. In: Eskin, D. (eds) Light Metals 2022. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-030-92529-1_96
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DOI: https://doi.org/10.1007/978-3-030-92529-1_96
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