摘要
运用有限元程序，数值模拟了有、无钢液条件下电磁软接触结晶器内的三维电磁特性. 结果表明: 结晶器内的电磁特性与有、无钢液密切相关, 软接触结晶器内的电磁场对钢液面波动十分敏感, 线圈位置对电磁场的影响效果受有、无钢液所决定, 高频电磁场有利于弯月面的约束成形和减小电磁力对内部钢液的搅拌, 建议采用20 kHz以上的频率, 电磁场主要集中在铸坯外表面约10 mm厚度的范围内.
A three-dimensional mathematic mold for electromagnetic field of soft-contact mold and the related finite element program verified by experimental data have been developed to study the relationship between three-dimensional electromagnetic characteristics and the steel in soft-contact mold. The results from numerical simulation show that the electromagnetic characteristics of soft-contact mold has close correlativity with the existence of charge and is sensitive with the fluctuation of meniscus level, the effect of coil position on electromagnetic characteristics lies on the existence of steel, high frequency electromagnetic field is propitious to the confinement of meniscus and weakens the stirring intensity of interior steel, the optimal frequency is 20 kHz or higher, the magnetic field mainly concentrates in the range of 10 mm thickness from outer surface of billet.
出处
《过程工程学报》
CAS
CSCD
北大核心
2001年第2期127-131,共5页
The Chinese Journal of Process Engineering
基金
国家自然科学基金重点资助项目!(编号:59734080)
国家重点基础研究发展规划资助项目!(G1998061510)
