摘要
以五矿营口中板有限责任公司（简称五矿营钢）生产的Q345D钢种为研究对象,借助商业软件ProCAST,采用元胞自动机-有限元耦合方法对不同二冷区电磁搅拌强度下,Q345D钢连铸坯凝固组织进行了数值模拟研究。同时,与有无电磁搅拌条件下实际生产的连铸坯组织对比分析,证明模拟结果与试验结果吻合。研究结果表明：当频率为6 Hz,电磁搅拌强度从0 A增加到400 A时,连铸坯内部等轴晶比例逐渐增加,从19.99%增长到了41.39%;晶粒平均半径从1.73×10^-3m减小到1.68×10^-3m,晶粒平均尺寸从8.21×10^-6m^2减少到6.99×10^-6m^2,晶粒细化明显。与未施加电磁搅拌相比较,在电磁搅拌的作用下,随着电磁搅拌强度的增加,连铸坯质量有了显著的改善。
Taking the Q345 D steel produced in Minmetals YingKou Medium Plate Co.,Ltd.,as the research object,the effect of strand electromagnetic stirring（SEMS）on solidification structure of Q345 D billets was simulated by the numerical simulation software ProCAST using the cellular automation-finite element（CAFE）model.Simulation results were evaluated by comparison between continuous casting billet with and with out strand electromagnetic stirring（SEMS）.It was proved that the simulation results were consistent with experiment results.The results indicate that increasing the electromagnetic stirring intensity can significantly increase the isometric crystal rate,and decrease the average grain size.When the electromagnetic stirring intensity increases from 0 A to 400 A at 6 Hz,the ratio of equiaxed grains increases significantly from 19.99% to 41.39%,the average grain radius decreases from 1.73×10^-3 m to 1.68×10^-3 m and the average grain size decreases from 8.21×10^-6 m^2 to 6.99×10^-6 m^2.The quality of continuous casting billet has been improved significantly under the effect of electromagnetic stirring.
作者
杨海峰
汪渊源
李廷刚
李彬
孙晓辉
梁小凯
雷作胜
YANG Hai-Feng;WANG Yuan-yuan;LI Ting-Gang;LI Bin;SUN Xiao-hui;LIANG Xiao-Kai;LEI Zuo-sheng(Minmetals YingKou Medium Plate Co.,Ltd.,Yingkou 115000,Liaoning,China;School of Material Scince and Engineering,Shanghai University,Shanghai 200444,Liaoning,China;Central Iron and Steel Research Institute Institute of Engineering Steel,Beijing 100081,China)
出处
《连铸》
2018年第5期54-58,共5页
Continuous Casting
基金
国家自然科学基金资助项目(U1860107,U1560202)
上海市经济和信息化委员会资助项目(沪CXY-2016-015)
关键词
Q345D
电磁搅拌
凝固组织
CET转变
Q345D
electromagnetic stirring
solidification structure
columnar to equiaxed transition
