摘要
结合方坯连铸机二冷各段的实际情况,采用有限元软件ANSYS建立了传热数学模型,并利用射钉结果修正数学模型中各段的传热系数,提高数学模型的准确性.结果表明,利用修正过的数学模型可以模拟整个铸机的传热凝固过程.根据射钉和数值模拟结果,确定电磁搅拌位置.采用电磁搅拌后,铸坯中心碳偏析和缩孔下降.
In combination with the actual situation of the secondary cooling of a billet continuous caster, a heat-transfer mathematical model was established with finite element software ANSYS. Heat-transfer coefficients in different secondary cooling regions were modified on the basis of pin-shooting results to improve the accuracy of the mathematical model. The results show that the modified mathematical model can simulate the whole heat-transfer and solidification process of the continuous caster. The location of electromagnetic stirring was determined by referencing the results of numerical simulation and pin-shooting techniques. Central carbon segregation and porosities in billets were alleviated by adopting electromagnetic stirring.
出处
《北京科技大学学报》
EI
CAS
CSCD
北大核心
2011年第1期17-21,共5页
Journal of University of Science and Technology Beijing
关键词
碳钢
连铸
电磁搅拌
偏析
数学模型
carbon steel
continuous casting
electromagnetic Stirring
segregation
mathematical models
