Numerical Simulation of Electromagnetic Field and Flow Field in Square Wave Electromagnetic Stirring of Continuous Casting Mould
Author of the article:LI Guidong;MA Yonglin;XING Shuqing;BAO Xinyu;BAI Qingwei
Author's Workplace：School of Materials and Metallurgy,Inner Mongolia University of Science and Technology,Baotou 014010,China
Key Words：square wave current finite element numerical simulation electromagnetic stirring
Abstract：
The influence of square wave current and sinusoidal wave current loaded by the agitator on the electromagnetic field, electromagnetic force and flow field in the continuous casting mould of 320 mm×320 mm billet was studied by ANSYS three-dimensional finite element numerical simulation. The results show that under the same condition of other parameters, when the stirrer loads the square wave current, the rotating magnetic field can also be generated inside the billet, and the magnetic field distribution is larger than that of the sine wave current. At the same time, the electromagnetic force that causes the liquid steel to rotate is generated, and the peak value of the electromagnetic force is large, showing a kind of shock force effect, while the electromagnetic force generated by loading the sine wave current is relatively stable.The loading of square wave current will produce counterclockwise rotating flow field inside the billet, and the effect of vibration is more conducive to improving the stirring efficiency.
