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为了优化国内某钢厂FC(Flow Control)结晶器电磁制动参数以适应生产需要,研究了不同电磁参数下的磁场对结晶器内钢液流动形态的影响.结果表明,FC结晶器内最大磁场强度与电流成正比;电流在一定范围内(I<665 A)变化可控制表面流速大小,超过该范围则主要影响钢液表面流速大小的位置分布;流股撞击深度随电流增加而减小,窄面撞击压强在电流为665 A时达到最大值1890 Pa;下部磁场位置变化与表面流速最大值成正比,且比上部磁场位置变化对钢液表面流速的影响更大,钢液表面流速随上衔铁位置变化的最大波动值为0.010 m/s,而随下衔铁位置变化的最大波动值为0.025 m/s;FC结晶器内流场形态是上、下磁场大小及位置共同作用的结果.
In order to optimize the electro-magnetic brake parameters of FC (Flow Control) mold in China to meet the production needs, the influence of the magnetic field under different electromagnetic parameters on the flow pattern of molten steel in the mold was studied. The results show that the maximum magnetic field The intensity is proportional to the current; the current can be controlled within a certain range (I <665 A) to control the surface flow rate above which the main distribution of the flow velocity on the surface of the molten steel distribution; flow impact depth decreases with the current increases, The narrow impact pressure reaches 1890 Pa at a current of 665 A; the change of the magnetic field at the lower part is proportional to the maximum value of the surface velocity, and the influence of the position of the upper magnetic field on the flow velocity of the molten steel is greater than that of the upper part. The maximum fluctuation of the armature position is 0.010 m / s, while the maximum fluctuation of the armature position is 0.025 m / s. The shape of the flow field in the FC crystallizer is the result of the interaction between the upper and lower magnetic fields.