Effect of mold EMS design on billet casting productivity and product quality

Increased casting productivity, especially with the introduction of high sp eed billet casting (HSBC), re-emphasized the importance of high performing mold electromagnetic stirring (M-EMS) in attaining the targets of productiv ity and product quality. To provide operating flexibility and to enhance me tallurgical performance, adapting M-EMS design to the requirements of casti ng practice with either the open stream pouring or submerged entry nozzle ( SEN) has become critical. In that context, it is especially important to as sess the effects of EMS design parameters that control stirring velocity in the meniscus region and the rest of the mold. Such a control is the key to EMS compatibility with the continuous casting practice and its high metall urgical performance. In this paper, we discuss different M-EMS designs with reference to their m etallurgical performance. (C) 2000 Canadian Institute of Mining and Metallu rgy. Published by Elsevier Science Ltd. All rights reserved.