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A physical model with mercury as analog was developed to investigate the influences of electromagnetic stirring( EMS) on flow field in slab continuous casting when the submerged entry nozzle( SEN) was clogged with different clogging rates( 0,10%,25%,and 50%). The flow field in mold under different EMS currents( 0,40 A,and 60 A) was measured by an ultrasonic Doppler velocimeter. The results proved that the flow field in the mold was a typical double roll structure under non-clogging SEN. As the SEN clogging rate increased,the flow field structure was transformed from a double roll to asymmetry flow. When the clogging rate reached 50%,the up circulation disappeared on the clogged side. The zone under the meniscus near the narrow face was a non-flowing area. EMS could correct bias flowcaused by SEN clogging and improve the symmetry of the flow field during SEN clogging.
A physical model with mercury as analog was developed to investigate the influences of electromagnetic stirring (EMS) on flow field in slab continuous casting when the submerged entry nozzle (SEN) was clogged with different clogging rates (0, 10%, 25%, and The flow field in mold under different EMS currents (0, 40 A, and 60 A) was measured by an ultrasonic Doppler velocimeter. The results prove that the flow field in the mold was a typical double roll structure under non- As the SEN clogging rate increased increased, the flow field structure was transformed from a double roll to asymmetry flow. when the clogging rate reached reached 50%, the up circulation disappeared on the clogged side. The zone under the meniscus near the narrow face was a non-flowing area. EMS could correct bias flowcaused by SEN clogging and improve the symmetry of the flow field during SEN clogging.