Electromagnetic swirling flow control in nozzle in slab continuous castingElectromagnetic swirling flow control in nozzle in slab continuous castingX.W. Zhu et al.

The electromagnetic swirling flow in nozzle (EMSFN) technique is designed to mitigate the adverse effects of unstable and uneven flow within the submerged entry nozzle in continuous casting. Utilizing electromagnetic forces, EMSFN stabilizes the flow within the nozzle, leading to a more controlled flow in the mold. Numerical simulations were used to quantitatively analyze the magnetic and flow fields in a slab continuous casting system under EMSFN. Results indicate that EMSFN significantly stabilizes the outflow from the nozzle, with stability increasing with higher current intensity. At 10,000 Ampere-turns (At) of the coil, meniscus fluctuations were unstable. They stabilized at 13,000 At, with minimal changes observed beyond this point. The optimal current intensity for stable mold flow, at a casting speed of 1.56 m/min, is 13,000 At. These findings confirm the effectiveness of EMSFN in stabilizing the internal flow field of the slab mold and determining optimal operational current intensity.