Abstract: A mathematical model of solidification process of electro-slag remelting (ESR) ingot under the condition with electromagnetic stirring ( EMS) has been established, and the ESR solidification process of steel 15Mn with spinning EMS has been simulated and analyzed by using Visual Basic language. Results show that under the condition without EMS the simulated results are agreed with experiment results; and under the condition of applied magnetic field the heat transfer is reinforced in liquid and the metal pool shape goes to plain, which is beneficial to eliminate the defects of ESR ingot such as macro segregation and shrinkage cavity, and available to promote the crystal nucleus developing to equiaxed grain.

Key words: ESR, EMS, Solidification, Temperature Field, Numerical Simulation

摘要： 建立了电磁搅拌条件下电渣重熔钢锭凝固过程数学模型。利用Visual Basic编程模拟分析了旋转电磁搅拌下15Mn钢的电渣重熔凝固过程,结果表明:未施加磁场时,模拟结果与实验结果较吻合;施加磁场时,电磁搅拌加强了钢液内部传热,熔池变平坦,有利于消除电渣锭宏观偏析和缩孔等缺陷,同时有利于晶核发展成等轴晶组织。

关键词: 电渣重熔,  , 电磁搅拌, 凝固, 温度场, 数值模拟