热轧板厚度对高牌号无取向硅钢磁性能的影响  

Effect of Hot-rolled Plate Thickness on Magnetic Properties of High Grade Non-oriented Silicon Steel

作　　者：朱玉秀 张建法 刘世德 张保磊 项利 李泽琳 徐厚军 ZHU Yuxiu;ZHANG Jianfa;LIU Shide;ZHANG Baolei;XIANG Li;LI Zelin;XU Houjun(School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing,Beijing 100083,China;Shougang Zhixin Qian'an Electromagnetic Materials Co.,Ltd,Qian′an 064400,China)

机构地区：[1]北京科技大学冶金与生态工程学院,北京100083 [2]首钢智新迁安电磁材料有限公司,河北迁安064400

出　　处：《安徽工业大学学报（自然科学版）》2024年第4期450-456,共7页Journal of Anhui University of Technology（Natural Science）

基　　金：北京市自然科学基金项目(2242048)。

摘　　要：基于高牌号无取向硅钢现场生产实验,将相同炉次的连铸板坯热轧至不同厚度(2.1,2.3,2.6 mm)的板卷,经常化均热工艺调控,获得晶粒较为均匀的常化板组织,再经85.7%~88.5%压下率冷轧,得到相同厚度(0.3 mm)的冷轧板,最终采用相同的退火工艺得到退火板;结合组织、织构和磁性能的相关检测分析,研究热轧板增厚对高牌号无取向硅钢产品磁性能的影响。结果表明:随高牌号无取向硅钢热轧板厚度的增加(在2.1~2.6 mm范围,即冷轧压下率降低),退火板组织中{111}晶粒占比提高,γ纤维织构强度逐渐增强,织构发生恶化;随热轧板厚度的增加,磁性能中铁损P_(1.0/400)线性增加,磁感强度B_(50)线性降低。热轧板厚度由2.1 mm增至2.3 mm时,P_(1.0/400)平均恶化0.20 W/kg,P_(1.5/50)平均恶化0.04 W/kg,B_(50)平均恶化0.005 T;热轧板厚度由2.3 mm增至2.6 mm时,P_(1.0/400)平均恶化0.24 W/kg,P_(1.5/50)平均恶化0.04 W/kg,B_(50)平均恶化0.009 T。Based on the on-site production test of high grade non-oriented silicon steel,continuous casting slabs of the same furnace were hot-rolled to coils of different thicknesses(2.1,2.3,2.6 mm),and then subjected to regular homogenization process control to obtain a normalized plate structure with relatively uniform grains.After cold rolling at a reduction rate of 85.7%to 88.5%,cold-rolled plates with the same thickness of 0.3 mm were obtained.Finally,annealed plates were obtained using the same annealing process.By combining relevant testing and analysis of organization,texture,and magnetic properties,the influence of hot-rolled plate thickening on the magnetic properties of high grade non-oriented silicon steel product was studied.The results show that as the thickness of hotrolled plate of high grade non-oriented silicon steel increases(in the range of 2.1–2.6 mm,i.e.,the cold rolling reduction rate decreases),the proportion of{111}grain in the annealed plate structure increases,the strength of theγfiber texture gradually increases,and the texture deteriorates.As the thickness of the hot-rolled plate increases,the iron loss P_(1.0/400) in the magnetic properties linearly increases,while the magnetic induction intensity B_(50) linearly decreases.When the thickness of hot-rolled plate increases from 2.1 mm to 2.3 mm,the average deterioration of P_(1.0/400) is 0.20 W/kg,P_(1.5/50) is 0.04 W/kg,and the average deterioration of B_(50) is 0.005 T.When the thickness of hot-rolled plate increases from 2.3 mm to 2.6 mm,the average deterioration of P_(1.0/400) is 0.24 W/kg,P_(1.5/50) is 0.04 W/kg,and the average deterioration of B_(50) is 0.009 T.

关 键 词：厚度 高牌号无取向硅钢 织构 磁性能 热轧板 新能源汽车 

分 类 号：TG142.1[一般工业技术—材料科学与工程]