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.