Effect of Mold Electromagnetic Stirring on the Flow and Solidification of Φ 800 mm Round Blooms

Abstract

Knowing the effect of electromagnetic force on fluid flow and solidification within the molds of large‐size round blooms is of paramount importance to minimize internal and external defects. In this regard, a three‐dimensional coupling model is established, containing magnetohydrodynamics, fluid flow, and heat transfer within the mold, and a new approach for the uniformity of the initial shell is presented. Meanwhile, the effect of stirring parameters on fluid flow and solidification is discussed. The results show that M‐EMS can significantly change the temperature and velocity distribution within the mold. These changes can stabilize the level fluctuations and make the initial shell uniform. The maximum industrial height fluctuation was reduced from 1.9 mm to 1.3 mm when the stirring intensity was 375 A/3 Hz. The stirring intensity of M‐EMS is relatively ideal.