摘要
旨在考察电磁制动对薄板坯连铸结晶器内钢液流动及传热的影响效果,从而为CSP薄板坯连铸生产实践提供理论参考。根据国内某钢厂CSP薄板坯连铸漏斗形结晶器、水口结构参数,首先建立了描述结晶器内钢液流动和传热的三维数学模型,应用CFD软件对结晶器内钢液的流场和温度场、凝固现象进行耦合计算和分析。再耦合经实测数据验证由ANSYS模拟得出的电磁场,计算和分析电磁制动下结晶器内钢液各种现象的变化。结果表明:电磁制动的应用,使结晶器钢液面上的速度降低,由无电磁时的0.13 m/s降到0.10 m/s,降幅在23%左右;使向下的流股冲击深度降低;使结晶器钢液面上温度升高5℃左右,有利于保护渣的熔化。
The electromagnetic braking effects on molten steel flow and heat transfer in the thin slab continuous casting mould was investigated in the paper, thus to provide a theoretical reference for the thin slab continuous casting production practices. According to the structure parameters of the compact strip production （CSP） funnel mold and a submerged entry nozzle （SEN） with two ports of a domestic steel plant, the 3D mathematical model was constructed to describe the phenomena of flow and heat transfer in the mold. The flow field, temperature field and solidification were calculated and analyzed with application of the Fluent CFD code. The electromagnetic field was built by using the ANSYS on the basis of measured data of electromagnetic to calculate and analyze the difference of all phenomena in mold with and without electromagnetic braking （EMBr）. The result shows that with the application of EMBr, the velocity of molten steel level reduces from 0.i3 m/s without EMBr to 0.10 m/s with EMBr and temperature raises about 5 K, the impingement depth becomes lower. The quality of casting product would be improved with application of EMBr.
出处
《辽宁科技大学学报》
CAS
2015年第6期418-422,共5页
Journal of University of Science and Technology Liaoning
