Effect of Double Ruler Magnetic Field in Controlling Meniscus Flow and Turbulence Intensity Distribution in Continuous Slab Casting Mold

During the continuous casting of the steel, the quality of cast products is predominantly affected by the flow dynamics at the meniscus level of the mold. An efficient caster operation ensures not only stable flow conditions and associated steel quality, but also meets the requirements for the steady operation without serious fluctuations in the casting process. The global flow characteristic is the function of mold thickness, mold width, argon injection rate, casting speed, and geometrical configuration of submergence entry nozzle (SEN).1) Furthermore, abrupt enhancement in mold surface velocity variation brings asymmetry on the surface directed flow and its later effect passes to the formation of localized vortex and therefore occurrences of instability between the molten steel and slag layer interface. As a result, intermittent slag layer further entrained into the molten pool to form internal and surface defects in the final cast products. In contrast, irregular sluggish surface flow could turn into a low and non-uniform surface temperature.2) This induces inadequate meniscus freezing, slag melting and infiltration, hook formation, and surface defects as consequent to the initial solidification issues. In the recent past, it has been observed by the various steel industries across the globe that application of electromagnetic fields may potentially be able to be accustomed to respond to the fluctuations in the flow. Furthermore, the local turbulent flow can be dampened instantaneously with the electromagnetic forces.3) In continuous casting of the steel, Electromagnetic brake Effect of Double Ruler Magnetic Field in Controlling Meniscus