电磁软接触结晶器内钢液面高度对磁场分布的影响

利用有限元软件ANSYS对软接触电磁连铸结晶器内磁场进行三维数值模拟,分析了结晶器内钢液面高度对磁场及电磁力分布的影响.结果表明:钢液使得磁感应强度集中在钢液的侧表面;当钢液面低于线圈上沿时,钢液中磁感应强度的最大值出现在钢液上表面附近,并沿拉坯方向逐渐递减;当钢液面高于线圈上沿时,随着钢液面的升高磁感应强度的最大值向线圈中部移动;钢液侧表面所受电磁力的分布趋势与磁感应强度的分布趋势基本一致.

Effect of molten steel level on the magnetic field distribution in an electromagnetic soft-contact continuous casting mold

Three-dimensional numerical simulations on the magnetic field in an electromagnetic soft-contact continuous casting mold were carried out through the finite element software ANSYS.The effects of molten steel level in mold on the distributions of magnetic field and electromagnetic force were analyzed.The results show that the magnetic induction density,B,is mainly distributed at the profile-surface of molten steel.If the molten steel level is below the coil top,the maximum value of B is near the top surface of molten steel and falls gradually along the withdrawing direction.If the molten steel level is above the coil top,the maximum value of B is moving toward the centre of the coil as the molten steel level is rising.The distributing character of electromagnetic force is mostly consistent with that of B.