取向硅钢板坯凝固结构调控的工业化试验研究  

Industrial Experimental Study on Solidification Structure Control of Oriented Silicon Steel Slab

作　　者：时朋召 刘红军[1] 谢建府 苏风光[1] 周军军[1] SHI Pengzhao;LIU Hongjun;XIE Jianfu;SU Fengguang;ZHOU Junjun(Converter Plant,Hunan Valin Lianyuan Iron&Steel Co.Ltd,Loudi 417000,China)

机构地区：[1]湖南华菱涟源钢铁有限公司210转炉厂,湖南娄底417000

出　　处：《安徽工业大学学报（自然科学版）》2024年第4期423-431,共9页Journal of Anhui University of Technology（Natural Science）

基　　金：冶金工程与资源综合利用安徽省重点实验室开放基金项目(SKF23-03)。

摘　　要：对取向硅钢板坯在不同连铸工艺条件进行工业化试验,研究过热度、拉速、电磁搅拌参数与电磁搅拌结构等对铸坯凝固结构的影响,探讨调控取向硅钢凝固结构的有效手段。结果表明:过热度由20℃提高到25℃时,铸坯的等轴晶率由66.6%降至63.4%;电磁搅拌电流由200 A提高到900 A时,铸坯的等轴晶率由33.3%提高到66.6%;在拉速0.9,1.0,1.1 m/min条件下铸坯柱状晶倾角分别为5°,8°和12°。综合考虑拉速、过热度与电磁搅拌对取向硅钢铸坯凝固结构的影响,电磁搅拌是取向硅钢调控凝固结构最有效的手段。Industrial experiments were conducted on oriented silicon steel slabs under different continuous casting process conditions to study the effects of superheat,casting speed,electric stirring parameters,and electric stirring structure on the solidification structure of the slab,and to explore effective means of regulating the solidification structure of oriented silicon steel.The results show that the equiaxed crystal rate of the billet decreases from 66.6%to 63.4%when the superheat temperature increases from 20℃to 25℃.When the current of the stirring parameter increases from 200 A to 900 A,the equiaxial crystal rate of the billet increases from 33.3%to 66.6%.Under the conditions of drawing speed 0.9,1.0 and 1.1 m/min,the cylindrical crystal angles are 5°,8°and 12°,respectively.Considering the influence of drawing speed,superheat and electromagnetic stirring on solidification structure,it is considered that electromagnetic stirring is the most effective means to control solidification structure of oriented silicon steel.

关 键 词：取向硅钢 凝固结构 工业化试验 电磁搅拌 能效 节能减排 

分 类 号：TG142.77[一般工业技术—材料科学与工程]