无取向电工钢头尾磁性能波动分析  

Magnetic properties fluctuation analysis for head and tail of non-oriented electrical steel

作　　者：华国龙 樊立峰[2] 肖丽俊[3] 岳尔斌 陆斌[1] 何建中[1] 乔继强[1] 张文博[1] HUA Guolong;FAN Lifeng;XIAO Lijun;YUE Erbin;LU Bin;HE Jianzhong;QIAO Jiqiang;ZHANG Wenbo(Inner Mongolia Baotou Steel Union Co.,Ltd.,Baotou 014010,China;School of Materials Science and Engineering,Inner Mongolia Universityof Technology,Hohhot 010051,China;General Steel Research Institute,Beijing 100081,China;Jiangsu Metallurgical Technology Research Institute,ZhangJiagang 215600,China)

机构地区：[1]内蒙古包钢钢联股份有限公司,内蒙古包头014010 [2]内蒙古工业大学材料科学与工程学院,内蒙古呼和浩特010051 [3]钢铁研究总院,北京100081 [4]江苏冶金技术研究院,江苏张家港215600

出　　处：《电工钢》2021年第1期28-32,共5页ELECTRICAL STEEL

基　　金：国家自然科学基金项目(51661026);轧制技术及连轧自动化国家重点实验室课题(2019-KF-25-09);内蒙古自然科学基金项目(2020MS05006);内蒙古关键技术攻关计划(2020GG0265)。

摘　　要：针对无取向硅钢工业化生产过程中出现的带钢头、尾磁性能波动现象,采用OM、XRD、EBSD技术对显微组织和晶体织构进行分析研究,结果表明:(1)受温度波动影响,距离尾部越近,带状组织越严重,距离尾部25 m处芯部仍存在带状组织;(2)带钢头、尾平均晶粒尺寸较中部小7~10μm,是造成头、尾铁损降低的直接原因;(3)相比于带钢中部,头部试样不利织构{111}〈112〉减少了2.8%,但是有利织构{100}〈010〉也降低了1%,导致磁感应强度相差不大。In order to find the reasons for the fluctuation of magnetic properties in the head and tail during the industrial production of non-oriented silicon steel,the microstructure and texture were analyzed by OM,XRD and EBSD techniques.The results showed that:(1)because of the temperature fluctuation,the closer to the tail,the banded structure was more serious,and the banded structure still existed in the core at 25 m from the tail;(2)the average grain size of the head and tail of the strip steel was smaller than that of the middle 7~10μm,which is the direct cause of the reduction in iron core loss of the head and tail;(3)compared to the middle of the strip steel,the unfavorable texture{111}〈112〉of the head specimen was reduced by 2.8%,but the favorable texture{100}〈010〉was also reduced by 1%,which resulted in a small difference in magnetic flux density.

关 键 词：无取向电工钢 磁性能 组织 织构 

分 类 号：TG335[金属学及工艺—金属压力加工] TG113