Numerical Simulation Study on the Magnetic Field in the Mold under the Combined Action of Vertical Traveling Magnetic Field and Horizontal Steady Magnetic Field EMBr

为提高结晶器电磁制动的灵活性，本文提出一种垂直行波磁场与水平稳恒磁场电磁制动(VTHS-EMBr)技术，其装置由置于窄面附近宽面上的立式行波磁场极和水口(SEN)下方水平稳恒磁场极构成。通过数值模拟分析垂直行波磁场强度(IV)、频率(fV)与水平磁场(IH)的协同作用，揭示其对结晶器内磁场及对钢液的制动力分布。研究表明：当垂直磁极电流参数为IV = 500 A、5 Hz，水平磁极电流参数为IH = 350 A时，产生的垂直行波磁场磁感应强度可达0.042 T，水平稳恒磁场磁感应强度可达0.07 T，行波磁场与稳恒磁场共同作用下对钢液射流的制动力可达1541.8 N/m3。该研究为高拉速连铸中多维度电磁制动技术提供了理论支撑。To enhance the flexibility of electromagnetic braking in continuous casting molds, this paper proposes a Vertical Traveling Wave Magnetic Field combined with Horizontal Steady Magnetic Field electromagnetic braking (VTHS-EMBr) technology. The device comprises vertical traveling wave magnetic poles positioned on the wide faces adjacent to the narrow sides and horizontal steady magnetic poles located beneath the Submerged Entry Nozzle (SEN). Through numerical simulation analysis of the synergistic effects between vertical magnetic field intensity (IV), frequency (fV), and horizontal magnetic field intensity (IH), this research reveals their combined influence on magnetic field distribution and braking force distribution in molten steel. The results demonstrate that when the vertical magnetic poles operate at IV = 500 A, fV = 5 Hz and horizontal magnetic poles at IH = 350 A, the vertical traveling magnetic flux density reaches 0.042 T while the horizontal steady magnetic flux density achieves 0.07 T. Under their combined action, the braking force density on the molten steel jet reaches 1541.8 N/m³. This study provides theoretical support for multidimensional electromagnetic braking technology in high-speed continuous casting processes.