Journal of Shanghai University >
Coupled numerical simulation on electromagnetic field, flow field and temperature field in round billet secondary cooling zone with PMO
Received date: 2016-06-15
Online published: 2018-06-27
A mathematical model that couples electromagnetic field, flow field and temperature field is established to study round billet secondary cooling zone under pulse magneto-oscillation pulse magneto oscillation (PMO) using the finite element analysis software ANSYS. Billet internal magnetic flux density, electromagnetic force and Joule heat distribution are analyzed. Distribution of the flow field and temperature field are obtained according to the coupling electromagnetic force and Joule heat. The results show that an upper and lower recirculation zone is formed since a driving electromagnetic force is generated by pulse magneto-oscillation. The flow can reduce billet center temperature. As a result, the internal temperature distribution becomes more uniform, which is beneficial to grain refinement.
HAO Junli, ZHAO Jing, ZHONG Honggang, XU Zhishuai, LI Renxing, ZHAI Qijie . Coupled numerical simulation on electromagnetic field, flow field and temperature field in round billet secondary cooling zone with PMO[J]. Journal of Shanghai University, 2018 , 24(3) : 412 -421 . DOI: 10.12066/j.issn.1007-2861.1814
| [1] | Vives C, Ricou R. Experimental study of continuous electromagnetic casting of aluminum alloys[J]. Metallurgical and Materials Transactions B, 1985,16(2):377-384. |
| [2] | Langenberg F C, Pestel G, Honeycutt C R. Grain refinement of steel ingots by solidification in a moving electromagnetic field[J]. Trans Metall Soc AIME, 1961,221:993-1000. |
| [3] | Vivès C. Effects of electromagnetic vibrations on the microstructure of continuously cast aluminium alloys[J]. Materials Science and Engineering A, 1993,173(1/2):169-172. |
| [4] | 葛丰德. 电磁场对铝合金凝固过程的影响[J]. 哈尔滨理工大学学报, 1983(1):70-78. |
| [5] | Zhai Q J, Li Q S, Li H B. Structure evolution and solidification behavior of austenitic stainless steel in pulsed magnetic field[J]. Journal of Iron and Steel Research International, 2006,13(5):69-72. |
| [6] | Gong Y Y, Luo J, Jing J X, et al. Structure refinement of pure aluminum by pulse magneto-oscillation[J]. Materials Science and Engineering A, 2008,497(1):147-152. |
| [7] | Liao X, Zhai Q, Luo J, et al. Refining mechanism of the electric current pulse on the solidification structure of pure aluminum[J]. Acta Materialia, 2007,55(9):3103-3109. |
| [8] | 黄军涛, 赫冀成. 方坯连铸二冷区电磁旋转搅拌数值模拟[J]. 钢铁研究学报, 2001,13(5):19-23. |
| [9] | 于海岐, 朱苗勇. 圆坯结晶器电磁搅拌过程三维流场与温度场数值模拟[J]. 金属学报, 2008,44(12):1465-1473. |
| [10] | 陈伟, 王宝祥, 冯永平, 等. $\phi $210 mm圆坯结晶器电磁场-流场-温度场耦合数值模拟研究[J]. 铸造技术, 2013(4):458-461. |
| [11] | 翟启杰, 龚永勇, 李仁兴. 脉冲磁致振荡凝固细晶技术及其在连铸中的应用[ C]//炼钢品种、质量提升研讨会. 2015: 12-16. |
| [12] | Nozaki T, Matsuno J I, Murata K, et al. A secondary cooling pattern for preventing surface cracks of continuous casting slab[J]. Trans Iron Steel Inst Jpn, 1978,18(6):330-338. |
/
| 〈 |
|
〉 |