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金属学报  2018, Vol. 54 Issue (2): 228-246    DOI: 10.11900/0412.1961.2017.00360
  本期目录 | 过刊浏览 |
电磁场技术在冶金领域应用的数值模拟研究进展
王强1(), 何明1,2, 朱晓伟1,2, 李显亮1,3, 吴春雷1,2, 董书琳1, 刘铁1
1 东北大学材料电磁过程研究教育部重点实验室 沈阳 110819
2 东北大学冶金学院 沈阳 110819
3 东北大学材料科学与工程学院 沈阳 110819
Study and Development on Numerical Simulation for Application of Electromagnetic Field Technologyin Metallurgical Processes
Qiang WANG1(), Ming HE1,2, Xiaowei ZHU1,2, Xianliang LI1,3, Chunlei WU1,2, Shulin DONG1, Tie LIU1
1 Key Laboratory of Electromagnetic Processing of Materials (Ministry of Education),Northeastern University, Shenyang 110819, China
2 School of Metallurgy, Northeastern University, Shenyang 110819, China
3 School of Materials Science and Engineering, Northeastern University, Shenyang 110819, China
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摘要: 

电磁场是控制冶金及材料制备过程中传热、传质、流体流动及金属凝固等物理化学变化的重要手段,对于提高生产效率和产品质量具有重要意义。本文主要综述了近些年来电磁场在冶金过程中典型应用技术的数值模拟研究进展,包括电磁热在电磁出钢技术和中间包感应加热中的应用,电磁力在电磁旋流水口连铸技术、软接触电磁连铸技术、中间包电磁冶金技术等中的应用以及电磁力对金属凝固组织的影响与控制,综合利用电磁热和电磁力的冷坩埚合金熔铸技术等。通过数值模拟的方法可以准确掌握冶金和材料制备过程中电磁场的作用规律,进而预测、分析、优化冶金过程,这对电磁冶金新技术的推广应用至关重要。

关键词 电磁场冶金过程数值模拟连铸传输现象    
Abstract

The application of electromagnetic fields is an important way to control the physical and chemical changes of heat transfer, mass transfer, fluid flow and solidification in metallurgical and material preparation processes. It is of great significance to improve the production efficiency and product quality. In this paper, the authors summarize the research contents and progress of numerical simulation on several typical applications of electromagnetic technology in metallurgical fields in recent years, including the electromagnetic steel-teeming technology using induction heating and induction heating technology of a tundish, the applications of electromagnetic force such as the electromagnetic swirling technology in submerged entry nozzle, the soft-contact mold electromagnetic continuous casting technology and the electromagnetic metallurgical technology for tundish, the influence and control of electromagnetic force on so lidified structure evolution, and also the electromagnetic cold crucible technology with comprehensive utilization of induction heat and electromagnetic force. Numerical simulation, as an important research method, is a very important tool in finding out the mechanism and rules of electromagnetic fields during metallurgical and material preparation processes to predict, analyze, and optimize metallurgical processes.

Key wordselectromagnetic field    metallurgical process    numerical simulation    continuous casting    transport phenomenon
收稿日期: 2017-08-30     
基金资助:国家自然科学基金委员会-宝钢集团有限公司钢铁联合研究基金资助项目No.U1560207
作者简介:

作者简介 王 强,男,1971年生,教授,博士

引用本文:

王强, 何明, 朱晓伟, 李显亮, 吴春雷, 董书琳, 刘铁. 电磁场技术在冶金领域应用的数值模拟研究进展[J]. 金属学报, 2018, 54(2): 228-246.
Qiang WANG, Ming HE, Xiaowei ZHU, Xianliang LI, Chunlei WU, Shulin DONG, Tie LIU. Study and Development on Numerical Simulation for Application of Electromagnetic Field Technologyin Metallurgical Processes. Acta Metall Sin, 2018, 54(2): 228-246.

链接本文:

https://www.ams.org.cn/CN/10.11900/0412.1961.2017.00360      或      https://www.ams.org.cn/CN/Y2018/V54/I2/228

图1  钢包电磁出钢技术示意图
图2  Fe-C合金和上水口的温度随时间t的分布和变化[27]
图3  电磁出钢系统对钢包底壳温度分布的影响[28]
图4  旋转室内夹杂物的湍流碰撞长大速率[36]
图5  中间包内的三维流线分布[36]
图6  中间包结构示意图[39]
图7  浇注室与电磁坝的时间停留分布(RTD)曲线对比[42]
图8  电磁旋流水口技术示意图
图9  机械旋流水口和电磁旋流水口示意图及水口出口流场图[8]
图10  有无电磁旋流圆坯结晶器钢液流场和温度场分布[8]
图11  有无电磁旋流水口板坯结晶器钢液流场温度场分布[8]
图12  水口形状调整前后结晶器内流场矢量图[8]
图13  电磁制动技术示意图
图14  两段式无缝软接触结晶器示意图
图15  两段式结晶器系统和铸坯表面的磁场分布[73]
图16  结晶器上半段长度(L)对凝固坯壳厚度的影响[9]
图17  有电磁搅拌连铸方坯凝固组织模拟结果[84]
图18  连铸方坯凝固组织模拟结果[84]
图19  中心截面流场分布[85]
图20  脉冲磁场下电磁力的分布段[89]
图21  第25 s时不同截面宽厚比下脉冲磁场在熔体中产生的流动矢量图[90]
图22  脉冲磁致振荡作用下熔体内电磁力及流场分布[93]
图23  电磁离心凝固(B=0.05 T)与普通离心铸造(B=0 T)平均溶质浓度沿径向分布的对比[98]
图24  电磁冷坩埚结构及原理示意图
图25  不同时刻Ti6Al4V的温度场分布[110]
图26  冷坩埚定向凝固TiAl合金工艺窗口[105]
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