提出了电熔剂净化金属熔体技术,利用电流通过细束金属流时产生的电磁挤压力去除非金属夹杂物.采用活塞流模型,对夹杂物净化效率进行了理论计算.结果表明,增加电流强度、降低金属液流速、降低流束直径可以提高夹杂物去除效率,而降低流束直径还可以缩短夹杂物迁移距离,因此对提高夹杂物去除效果更为有利.采用含碳化硅铝熔体进行了验证实验,证明施加电流能使非金属夹杂物迁移至铝熔体表面.理论计算和实验证明夹杂物的电磁迁移是电熔剂净化技术中的主要机理.
参考文献
| [1] | 王祝堂.铝熔体的电熔剂处理[J].轻合金加工技术,1985(12):27-33. |
| [2] | 何代惠;徐敏;蒋呐 .电熔剂精炼工艺在铝锂合金铸锭生产中的应用[J].铝加工,1999,22(03):13-29. |
| [3] | 白世鸿,杨根仓,周少荣.电熔剂净化对Al-4.5wt%Cu合金宏观组织的影响[J].稀有金属材料与工程,1996(01):41-43. |
| [4] | Leenov D;Kolin A .Theory of electromagnetophoresis. I. magnetohydrodynamic forces experienced by spherical and symmetrically oriented cylindrical particles[J].Journal of Chemical Physics,1954,22(04):683-688. |
| [5] | Marty P;Alemany A.Theoretical and experimental aspects of electromagnetic separation metallurgical applications of magnetohydrodynamics[C].Proceedings of a Symposium of the International and Applied Mechanics(IUTAM); Cambridge,1982:245-259. |
| [6] | Tanaka Y;Sassa K;Iwai K et al.Separation of nonmetallic inclusions from molten metal using travelling magnetic field[J].Tetsu To Hagane-Journal of The Iron and Steel Institute of Japan,1995,81(12):12-17. |
| [7] | 钟云波 .电磁力场作用下液态金属中非金属颗粒迁移规律及其应用研究[D].上海大学,1999. |
| [8] | Patel A D;Nagy El-Kaddah.On the theory of electromagnetic separation in alternating electromagnetic fields[A].Nagoya,1994:115-120. |
| [9] | ZHONG Yun-bo,REN Zhong-ming,DENG Kang,JIANG Guo-chang,XU Kuang-di.Separation of inclusions from liquid metal contained in a triangle/square pipe by travelling magnetic field[J].中国有色金属学会会刊(英文版),2000(02):240-245. |
| [10] | Taniguchi S;Brimacombe S J .Application of pinch force to the separation of inclusion particles from liquid steel[J].ISIJ International,1994,34(09):722-731. |
| [11] | LI Tian-xiao,SHU Da,XU Zhen-ming,SUN Bao-de,ZHOU Yao-he.Physical simulation and theoretical analysis of migrating rate of inclusions in aluminum melt in electromagnetic field[J].中国有色金属学会会刊(英文版),2001(01):30-34. |
| [12] | 钟云波,任忠鸣,邓康,蒋国昌,徐匡迪.行波磁场连续净化铝合金液实验[J].中国有色金属学报,2001(02):167-171. |
| [13] | 钟云波,任忠鸣,邓?,康,蒋国昌,徐匡迪.交变磁场净化金属液时金属液紊流的形成及其控制①[J].中国有色金属学报,2001(04):541-546. |
| [14] | 张邦文,任忠鸣,钟云波,邓康.金属液单电流电磁净化的理论分析[J].包头钢铁学院学报,2002(03):228-232. |
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%