常化工艺对高牌号无取向硅钢夹杂物的影响  

Influence of normalizing on inclusions of high grade non-oriented silicon steel

作　　者：李建军[1,2] 项利 裴英豪 仇圣桃[1] LI Jianjun;XIANG Li;PEI Yinghao;QIU Shengtao(National Engineering and Research Center for Continuous Casting Technology,Center Iron and Steel Research Institute,Beijing 100081,China;Metallurgical Corporation of China Co.,Ltd.,Beijing 100028,China;University of Science and Technology Beijing,School of Metallurgy and Ecological Engineering,Beijing 100083,China;Technology Center,Maanshan Iron and Steel Co.,Ltd.,Maanshan 243000,Anhui,China)

机构地区：[1]钢铁研究总院连铸技术国家工程研究中心,北京100081 [2]中国冶金科工股份有限公司,北京100028 [3]北京科技大学冶金与生态工程学院,北京100083 [4]马鞍山钢铁股份有限公司技术中心,安徽马鞍山243000

出　　处：《金属功能材料》2024年第4期17-23,共7页Metallic Functional Materials

摘　　要：研究了常化工艺对高牌号无取向硅钢夹杂物的影响规律,并分析不同常化工艺得到的夹杂物状态对成品磁性能的间接影响。主要结果表明,高牌号无取向硅钢的常化工序能明显增加钢中夹杂物的尺寸,降低夹杂物的分布密度,提高夹杂物的体积分数。常化温度(975~1025℃)升高使得夹杂物粗化,夹杂物的分布密度有不同程度的减小,常化温度对夹杂物的体积分数的影响是非线性的。常化时间(4~6 min)对不同尺寸的夹杂物的数量变化、分布密度和体积分数的影响非线性。常化后夹杂物的分布密度对成品铁损值的影响最大,体积分数的影响规律不明显。只要在分布密度低的情况下,尺寸明显粗大或者略微偏小时,均能得到优良的成品铁损值。The influence of normalizing on inclusions of the non-oriented silicon steel is studied.The indirect effect of the inclusion state on the magnetic property of the finished product was analyzed.The main results show that normalizing of the high grade non-orientated silicon steel can significantly increase the size of the inclusions,reduce the distribution density of the inclusions,and improve the volume fraction of the inclusions in the steel.The increasing temperature which is from 975 ℃ to 1025 ℃,increases the size of the inclusions,the distribution density of the inclusions decreases to varying degrees,and the influence of normalizing temperature on the volume fraction of inclusions is nonlinear.The influence of normalizing time which is from 4 min to 6 min,on the size,the distribution density and the volume fraction of inclusions is nonlinear.The distribution density of the inclusions was the most important effect on the iron loss of the finished product,and the effect of the volume fraction of the inclusions was not obvious.As long as the distribution density is low,no matter the size is obviously large or slightly small,less iron loss of the finished product can be obtained.

关 键 词：高牌号无取向硅钢 夹杂物 常化 

分 类 号：TG142.1[一般工业技术—材料科学与工程]