铜管水平连铸施加旋转电磁搅拌的数值模拟研究
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- 英文论文题名：Horizontal continuous casting under rotating electromagnetic stirring for copper hollow billet
- 论文作者：邢方圆 ; 武立 ; 王同敏 ; 李廷举
- 英文论文作者：XING Fangyuan ; WU Li ; WANG Tongmin ; LI Tingju ; School of Materials Science and Engineering ; Dalian University of Technology
- 年：2016
- 作者机构：大连理工大学材料科学与工程学院;
- 论文关键词：旋转电磁搅拌 ; 管坯 ; 铜 ; 水平连铸 ; 数值模拟
- 英文论文关键词：Rotating electromagnetic stirring ; Hollow billet ; Copper ; Horizontal continuous casting ; Numerical simulation
- 会议召开时间：2016-08-15
- 会议录名称：第三届全国电磁冶金与强磁场材料科学会议学术论文集
- 语种：中文
- 分类号：TG291
- 学会代码：ZGJS
- 会议名称：第三届全国电磁冶金与强磁场材料科学会议
- 会议地点：中国河南焦作
- 主办单位：中国金属学会电磁冶金与强磁场材料科学分会
- 学会名称：中国金属学会
- 页数：5
- 文件大小：1883k
- 原文格式：O
- 会议级别：全国
摘要
建立了描述旋转电磁搅拌下铜管水平连铸过程中电磁场分布的三维数学模型,分析了不同电磁参数下磁感应强度和电磁力的分布规律。模拟结果表明,由于电磁场的集肤效应,磁感应强度和电磁力的极大值均分布在靠近铜管外壁一侧;随着频率和电流的增加,金属液受到的电磁力和磁感应强度越大。电磁力越大,搅拌力越大,搅拌效果越好:选取的最优电磁参数为频率50Hz、电流50A。
A three-dimensional mathematical model is built to describe the electromagnetic field distribution during horizontal continuous casting of the copper hollow billet under rotating electromagnetic stirring.The model is used to analyze the distribution of magnetic flux density and electromagnetic force under different electromagnetic parameters.Simulation results show that because of electromagnetic field's skin effect,the maximum of magnetic flux density and electromagnetic force is near the outer wall of the copper hollow billet.With the increase of frequency and current,the electromagnetic force and the magnetic flux density of melt are bigger.The bigger the electromagnetic force,the greater the stirring power,mixing the better.The optimal electromagnetic parameters are 50 Hz,50A.
A three-dimensional mathematical model is built to describe the electromagnetic field distribution during horizontal continuous casting of the copper hollow billet under rotating electromagnetic stirring.The model is used to analyze the distribution of magnetic flux density and electromagnetic force under different electromagnetic parameters.Simulation results show that because of electromagnetic field's skin effect,the maximum of magnetic flux density and electromagnetic force is near the outer wall of the copper hollow billet.With the increase of frequency and current,the electromagnetic force and the magnetic flux density of melt are bigger.The bigger the electromagnetic force,the greater the stirring power,mixing the better.The optimal electromagnetic parameters are 50 Hz,50A.
引文
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[6]李新涛,李丘林,李廷举,等.电磁场对水平连铸紫铜管表面质量及组织性能的影响[J].中国有色金属学报,2004,14(12):2060-2065.
[2]GANAPATHYSUBRAMANIAN B,ZABARAS N.On the control of solidification using magnetic fields and magnetic field gradients[J].International Journal of Heat and M ass Transfer,2005,48(19-20):4174-4189.
[3]CHAUDHARY R,THOMAS B G,VANKA S P.Effect of electromagnetic ruler braking(EMBr)on transient turbulent flow in continuous slab casting using large eddy simulations[J].Metallurgical and Materials Transactions B,2012,43(3):532-553.
[5]Li W U,Kang H,Chen Z,et al.Horizontal continuous casting process under electromagnetic field for preparing AA3003/AA4045 clad composite hollow billets[J].Transactions of Nonferrous Metals Society of China,2015,25(8):2675-2685.
[4]张琦,王同敏,李廷举等,连铸空心管坯内置行波磁场对凝同组织的影响[J].稀有金属材料与工程,2007,26(9):1566-1569.
[5]Zhang H,Nagaumi H,Zuo Y,et al.Coupled modeling of electromagnetic field,fluid flow,heat transfer and solidification during low frequency electromagnetic casting of 7XXX aluminum alloys:Part 1:development of a mathematical model and comparison with experimental results[J].Materials Science and Engineering:A,2007,448(1):189-203.
[6]李新涛,李丘林,李廷举,等.电磁场对水平连铸紫铜管表面质量及组织性能的影响[J].中国有色金属学报,2004,14(12):2060-2065.