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Effect of Electromagnetic Stirring on Continuous Casting of a Steel Billet using 2D Magnetohydrodynamic Analysis
  • Jesu Ratan Veer Goda,
  • Jagannadha Dhayamraju
Jesu Ratan Veer Goda
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Jagannadha Dhayamraju
Gayatri Vidya Parishad College for Degree and PG Courses
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Abstract

The molten liquid in the mold of continuous casting is churned using electromagnetic field to produce homogeneous and defect-free billets. In this investigation a two-dimensional computational model to simulate the effect of electromagnetic stirring on continuous casting of steel billets is developed using magnetohydrodynamic (MHD) module present in ANSYS-FLUENT 18.1 software. A solidified shell of the billet is formed in the vertical water-cooled copper mold in the primary stage of cooling. The primary stage cooling is investigated in this work with and without employing electromagnetic stirring. A moving electromagnetic field of intensity 0.1 T and frequency 10 Hz is applied in horizontal and vertical directions separately for electromagnetic stirring. The electromagnetic stirrer is of length 100 mm and it is placed at various locations of the vertical mold of 1 m height. The stirrer is placed at locations 100, 300, 500 and 700 mm from the meniscus. The velocity field and porosity of the solidifying liquid within the mold are computed and compared with and without electromagnetic stirrer. A dense mushy zone is formed at the center of the mold and recirculation loops are formed near the electromagnetic stirrer.