采用数值模拟的方法研究了双流低频电磁连铸过程中磁场分布规律.建立了单、双流低频电磁连铸中包括铸锭、结晶器、线圈和屏蔽罩的二维轴对称有限元模型.利用ANSYS软件包进行划分网格及计算,模拟出了磁场在连铸结晶器区域的分布.研究了电流频率、电流强度、电流方向和线圈距离对金属熔体内磁感应强度的影响.计算结果表明:单流时,电流频率升高,磁感应强度降低;电流强度增大,磁感应强度升高.双流时,无论电流方向是同向还是反向,同一铸锭的远端磁场强度要大于其近端磁场强度,相邻线圈电流方向为反向时,铸锭内磁场强度高于相邻线圈电流方向为同向的情况;增大线圈之间的距离时,铸锭远端和近端的磁感应强度的差值降低.
参考文献
| [1] | 陈荣,沈厚发.板坯结晶器电磁搅拌电磁场与流场的数值模拟[J].连铸,2010(03):1-5,15. |
| [2] | Park J K;Ardell A J .Microstructures of the commercial 7075alloy in the T651 and T7 tempers[J].Metallurgical and Materials Transactions,1983,14A(10):1957. |
| [3] | Heinz A;Haszler A;Keidel C .R ecent development in aluminum alloys for aerospace applications[J].Materials Science and Engineering A:Structural Materials Properties Microstructure and Processing,2000,A280:102-107. |
| [4] | 张勤,崔建忠.电磁振荡下半连铸Al合金凝固组织的细化机制[J].中国有色金属学报,2003(06):1500-1504. |
| [5] | Yubo Zuo;Jianzhong Cui;Jie Dong .Effect of low frequency electromagnetic field on the constituents of a new super high strength aluminum alloy[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2005(1/2):149-155. |
| [6] | Jie Dong;Jianzhong Cui;Fuxiao Yu .Effect of Low-Frequency Electromagnetic Casting on the Castability, Microstructure, and Tensile Properties of Direct-Chill Cast Al-Zn-Mg-Cu Alloy[J].Metallurgical and Materials Transactions, A. Physical Metallurgy and Materials Science,2004(8):2487-2494. |
| [7] | 赵志浩,崔建忠,左玉波,张海涛.低频电磁场对水平半连续铸造7075铝合金的影响[J].东北大学学报（自然科学版）,2005(01):51-54. |
| [8] | 赵志浩,张北江,崔建忠.线材水平电磁连铸过程中磁场分布的数值模拟[J].材料与冶金学报,2002(02):154-157. |
| [9] | 王哲峰,崔建忠,朴凤贤.铝合金空心管坯电磁铸造中磁场分布的数值模拟[J].东北大学学报（自然科学版）,2005(03):244-247. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%