电磁搅拌对连铸结晶器内钢液液面波动有重要的影响。以某钢厂直径为250 mm 连铸圆坯结晶器及电磁搅拌器的相关参数为原型，采用湍流模型与多相流模型相结合的方法对电磁搅拌作用下连铸结晶器内钢液液面波动行为进行研究，分析了电磁搅拌作用下钢液液面产生变化的成因。研究结果表明：电磁搅拌作用下钢液液面呈旋转抛物面，与无电磁搅拌作用下的液面截然不同；电磁搅拌作用下钢液液面波动实质上是电磁搅拌电磁力作用的结果。水口附近液面波动会随着电磁搅拌强度的增大而增强，达到一定值时出现卷渣现象。在实际生产过程中，为获得较好的搅拌效果，应考虑结晶器内的液面波动及卷渣行为。
Electromagnetic stirring had a strong influence on level fluctuation in continuous casting mold.The model was established based on the parameters of 250 mm round billet continuous casting mold and electromagnetic stir-ring (M-EMS)in the steel plant.The combined method of turbulence model and multiphase-flow model was adopted to study the level fluctuation in the mold with M-EMS.The reason of level fluctuation was analyzed.The results show that the liquid steel level exhibits a rotating parabolic surface,which is greatly different to the fluctuation without M-EMS.The level fluctuation is that of electromagnetic force effect in essence.The level fluctuation near the outlet of nozzle increases with the growing stirring intensity and slag entrapment will happen if the intensity in-creases to a certain value.In order to obtain better stirring effect,level fluctuation and slag entrapment should be considered in industrial process.
参考文献
| [1] | 王维维;张家泉;陈素琼;董进明.水口侧孔倾角对大方坯结晶器流场和液面波动的影响[J].北京科技大学学报,2007(8):816-821,844. |
| [2] | 熊霄;邓小旋;王新华;黄琦;张弘弼.水口出口形状对高拉速板坯连铸结晶器内流场特征的影响[J].钢铁研究学报,2014(7):35-40. |
| [3] | 孙海波;张家泉;王敬慧.水口类型对大方坯结晶器内钢水流动与凝固行为的影响[J].钢铁研究学报,2011(2):25-29. |
| [4] | 王治国;张小伟;王寅;邓康;任忠鸣.板坯连铸结晶器内非对称涡流的水模拟研究[J].钢铁研究学报,2010(7):10-14. |
| [5] | 王超;张慧;马忠伟;王明林;陶红标;赵沛.圆坯结晶器水口优化的模拟研究[J].钢铁研究学报,2014(3):15-20,26. |
| [6] | 张小伟;邓康;雷作胜;任忠鸣.连铸结晶器内非稳定流动的研究进展[J].钢铁研究学报,2011(1):1-6. |
| [7] | 李林波;曾文斌;朱军;田清章;薛晶晶.CFD数值模拟技术在冶金中的应用[J].钢铁研究学报,2011(12):1-4. |
| [8] | 张静;王恩刚;邓安元;许秀杰;赫冀成.大圆坯连铸M-EMS参数对磁场和流场分布的影响[J].连铸,2011(5):8-12. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%