Modelling of Heat Transfer,Dendrite Microstructure and Grain Size in Continuous Casting of Steels |
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| Authors: | V Karlinski de Barcellos V Lopes da Silva Gschwenter H Kytönen C Alexandre dos Santos J Alvares Spim S Louhenkilpi J Miettinen |
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| Affiliation: | 1. Federal University of Rio Grande do Sul (UFRGS), Foundry Laboratory (LAFUN) – Center of Technology (CT), P.O. Box 15.021, 91501‐970, Porto Alegre/RS – Brazil;2. Helsinki University of Technology (TKK), Laboratory of Metallurgy, P.O. Box 6200, FI‐02150 Espoo – Finland;3. Pontifical Catholic University of Rio Grande do Sul (PUCRS), Nucleus of Metallic Materials Engineering (NUCLEMAT), 90.619‐900 ‐ Porto Alegre/RS – Brazil |
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| Abstract: | The dendrite arm spacing and grain size in continuous casting has been studied by mathematical modelling and experimental measurements. Two in‐house tools have been used in the study. The heat transfer is calculated by the model called TEMPSIMU and the solidification as well as the microstructural phenomena by the thermodynamic‐kinetic software called IDS. The models are validated by comparison the calculated results with experiments from steel plants. In continuous casting, the solidification structure is also influenced by process parameters. In this study the effect casting speed, superheat and secondary cooling on arm spacings and grain size is also studied. The in‐house models and the obtained results are presented in this paper. Using the developed models, the heat transfer and microstructure can be controlled more accurately. |
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| Keywords: | solidification heat transfer dendrite arm spacing grain size |
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