1. Faculty of Metallurgical and Energy Engineering of Kunming University of Science and Technology, Kunming 650093,Yunnan, China 2. Technology Center of Kunming Iron and Steel Co., Ltd., Kunming 650302, Yunnan, China 3. National Magnetic Equipment Quality Supervision and Inspection Center, Yueyang 414022, Hunan, China）
Abstract：Effect of roll type S-EMS frequency on quality of slabs was investigated. Stirring frequencies chosen in this experiment respectively were 5,6,7,8 and 9 Hz. Experimental results showed that the central equiaxed zone ratios of the slabs were increased with EMS frequency from 5 Hz to 8 Hz and the same other technological parameters. The central equiaxed zone ratios of the slabs were decreased with EMS frequency from 8 Hz to 9 Hz. When EMS frequency was 8 Hz，the central equiaxed zone ratios was maximized,and the central porosity and the central segregation were respectively controlled at level 0.5 and below C1.5, so the compactness and homogeneity of the solidification structure of the slab were enhanced. The electromagnetic force didn’t change monotonously with the change of frequency in the S-EMS of the slab. It had a maximum value. The location of the best frequency was related with slab thickness, molten steel conductivity, liquid core size , stirrer parameters etc.
丁贺，张桂芳，杨春雷，李金柱，张瑜. 辊式二冷区电磁搅拌频率对板坯质量影响试验研究[J]. 中国钢铁期刊网, 2015, 34(1): 17-21.
DING He,ZHANG Gui-fang,,YANG Chun-lei,LI Jin-zhu,ZHANG Yu. Experimental study of effect of roll type S-EMS frequency on quality of slabs. Chinese Journal of Iron and Steel, 2015, 34(1): 17-21.
2015, Vol. 34 
