Numerical Simulation of the Steel Strip-Feeding Swing in the Bloom Continuous Casting Mold with Electromagnetic Stirring

The mold electromagnetic stirring technology and mold feeding steel strip technology are both effective method of reducing center segregation and shrinkage cavities in continuous casting bloom. In this work, a bidirectional flow-solid coupling model was established to investigate the swing and depth of steel strip feeding with the influence of both molten steel and electromagnetic forces. The results indicate that increasing the strip's feeding speed from 0.2 to 0.4 m/s without electromagnetic stirring results in an increase in the swinging amplitude from 6.26 to 11.89 mm. With the implementation of mold electromagnetic stirring, the bottom of the steel strip moves on the “Z” shape periodically, and the swing amplitude increasing with the current strength rising. When the feeding speeds are 0.2, 0.3, and 0.4 m/s, and the current is increased from 200 to 300 A, the maximum swing amplitude of the steel strip increases from 7.30, 12.18, and 21.09 to 10.34, 19.47, and 41.14 mm, respectively.