Continuous casting of round steel billet is an important steel production process that not only offers high production efficiency, but also yields uniform structure and good mechanical properties. The molten steel is injected into the mold from tundish through the nozzle, and the solidified shell is gradually formed through mold cooling. The flow pattern and the uniformity of cooling in the mold are important factors affecting the quality of the steel billet. Therefore, understanding and controlling the flow field and temperature in the mold become an important research topic. Due to the complexity of the thermal flow field in the continuous casting process, which involves multiphase flow and solid-liquid phase changes, the simulation technology used must be able to couple phenomena such as multi-phase flow, solid-liquid phase changes and continuous pulling. In this study, a three-dimensional transient thermal flow model was established using ANSYS Fluent, combined with User-Defined Function (UDF) programs to calculate the shell thickness and evaluate the trajectory of the inclusions. The simulation results can analyze phenomena such as shell thickness, the amount of slag entrainment, and the capture of inclusions under different operating conditions. The results could be applied to establish optimal operating parameters.
圓胚連鑄之凝殼厚度與介在物軌跡模擬分析 = Analysis of Shell Thickness and Inclusions Trajectory in Continuous Casting of Round Billet
