取向硅钢常规板坯提拉速工艺研究  

Research on technology of raising casting speed of conventional slab of oriented silicon steel

作　　者：刘红军[1] 时朋召 谢建府 徐刚军[1] 周军军[1] 仇圣桃[2] LIU Hongjun;SHI Pengzhao;XIE Jianfu;XU Gangjun;ZHOU Junjun;QIU Shengtao(210 Converter Plant,Hunan Valin Lianyuan Iron&Steel Co.,Ltd.,Loudi 417000,Hunan,China;Engineering and Research Center for Continuous Casting Technology,Central Iron and Steel Research Institute Co.,Ltd.,Beijing 100081,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 [2]钢铁研究总院有限公司连铸技术国家工程研究中心,北京100081

出　　处：《连铸》2024年第5期73-81,共9页Continuous Casting

摘　　要：取向硅钢生产工艺复杂、制造技术严格,被誉为钢铁材料中的“艺术品”。为了提高取向硅钢常规板坯拉速,提高企业盈利水平,分别进行了不同拉速条件下的凝固末端测试研究和铸坯鼓肚行为研究,结果表明,1)取向硅钢常规板坯在0.9 m/min和1.0 m/min拉速时,凝固末端均在7段前,1.1 m/min高拉速时,凝固末端在第8段;2)拉速由0.9 m/min提高1.1 m/min时,坯壳厚度减薄,相同静压力下,鼓肚量与鼓肚变形率变大,最大鼓肚变形率为0.107%,当拉速增幅为0.1 m/min时,对应相同位置的铸坯鼓肚量增幅约为3.7%~16.6%;3)综合结晶器液面波动、铸坯鼓肚、凝固末端位置等试验研究,取向硅钢常规板坯拉速可由0.9 m/min提高到1.1 m/min。Oriented silicon steel is known as“art”in iron and steel materials for the reason of complex production process and strict manufacturing technology.In order to improve the casting speed of conventional slab of oriented silicon steel and improve the profit level of enterprises,the solidification end test and the bulging behavior of casting slab under different casting speeds were carried out,and the following results could be drawn.At the casting speeds of 0.9 and 1.0 m/min,the solidification end of oriented silicon steel slab is located in first 7 sections,while at high casting speed of,the solidification end is in the 8th section.When the casting speed is increased from 0.9 to 1.1 m/min,the thickness of the billet shell decreases.Under the same static pressure,the bulge volume and bulge deformation rate increase,with the maximum bulge deformation rate of 0.107%.When the casting speed increases by 0.1 m/min,the bulge volume of the billet at the same position increases by about 3.7%-16.6%.Combining the experimental study of liquid level fluctuation of mold,bulging behavior of billet and solidification end position,the casting speed of conventional slab of oriented silicon steel can be increased from 0.9 to 1.1 m/min.

关 键 词：取向硅钢 拉速 凝固末端 鼓肚 

分 类 号：TF777[冶金工程—钢铁冶金]