20CrMnTiH(FQ)大方坯连铸电磁搅拌技术研究

Research on EMS Technology for Continuous Casting 20CrMnTiH(FQ)Bloom

基于360 mm×450 mm大方坯连铸机装备条件,研究了改善大方坯20CrMnTiH(FQ)齿轮钢铸坯内部质量的电磁搅拌优化控制关键技术。采用凝固传热数值模拟计算确定了凝固末端电磁搅拌(F-EMS)最佳安装位置,实际测定并工业试验了组合电磁搅拌的磁场强度对铸坯内部质量的影响,最终确定出最优组合电磁搅拌工艺参数,实现了大方坯连铸生产20CrMnTiH(FQ)齿轮钢铸坯质量的致密化、均质化控制。

Continuous casting EMS technology for optimizing internal quality of 20CrMnTiH(FQ)gear steel bloom had been researched,based on the equipment of 360 mm×450 mm bloom casting machine conditions.In order to determine the position of F-EMS applied to the end of liquid core,numerical simulation calculation had been carried in terms of the process of solidifying and heat transfer,and measured the effect of stirring magnetic field intensity on bloom internal quality.Based on the research results,the optimal process parameters of combined-EMS had been determined and then achieved the denser and homogeneous b 20CrMnTiH(FQ) gear steel bloom internal quality.