Abstract：The effects of roller electromagnetic stirring （roller EMS） on the internal quality and properties of high-strength steel were systematically studied through industrial trial. The result shows that roller EMS can effectively improve the macrostructure of slab. The macrostructure rating is improved from 1.5-3.0 to 1.0-1.5, the intermediate cracks are increased to below 0.5. And the semi-continuous A or B-type segregation improves to point-like C-type segregation. Under the current working conditions, when the current is 400 A and the frequency is 7 HZ, the slab macrostructure is the best. When using roller EMS, the segregation of elements C and P increases. Especially at the thickness of 1/4 of the slab, C and P show a significant negative segregation, which is called “white band” region. Electromagnetic stirring has no significant effect on the basic properties of high-strength steel, and can significantly reduce the central segregation or the banded structure in the central zone.
谢世正, 肖爱达, 聂嫦平, 周剑丰, 隋亚飞, 刘彭. 二冷辊式电磁搅拌对高强钢低倍组织与性能的影响[J]. 连铸, 2020, 39(1): 46-50.
Xie Shi-zheng, Xiao Ai-da, Nie Chang-ping, Zhou Jian-feng, Sui Ya-fei, Liu peng. Effect of roller EMS on macrostructure and properties of high strength steel. CONTINUOUS CASTING, 2020, 39(1): 46-50.
2020, Vol. 39 
