辊芯表层电渣加热渣池热电场及影响因素的数学模拟

Mathematical Simulation on Thermoelectricity Field of Slag Pool Heated by Electroslag on Surface of Roll Core and Influencing Factors

在建立辊芯表层电渣加热物理模型和数学模型的基础上,利用大型有限元软件ANSYS对辊芯表层加热系统中渣池热电场及影响因素进行了模拟研究。研究结果表明,在辊芯表层和电极之间存在一个强电流区,使辊芯表层被快速加热;随着电压的升高、渣池深度的增加和电极与辊芯间距的减小,渣池中的电场强度和整体温度升高,高温区集中在辊芯与电极之间;电极数量越多,系统的电场分布越均匀。

Based on the physical and mathematical models for electroslag heating on surface of roll core, the thermoe-lectricity field of slag pool in roll core surface heating system and its influencing factors have been simulated by using largescale finite element software ANSYS. Study results show that there is a strong current area between the roll core surface and the electrode to rapidly heat the surface of roll core ; with increasing the voltage and the slag pool＇s depth, and decreasing the distance between electrode and roller, the electric field intensity of slag pool and the temperature of whole slag pool increase and the high temperature zone is centralized between roll and electrode ; with increasing the number of electrode, the distribution of electric field in system is more balancing.