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
李建军 1项利 2裴英豪 3仇圣桃4
作者信息
- 1. 钢铁研究总院连铸技术国家工程研究中心,北京 100081;中国冶金科工股份有限公司,北京 100028
- 2. 北京科技大学冶金与生态工程学院,北京 100083
- 3. 马鞍山钢铁股份有限公司技术中心,安徽马鞍山 243000
- 4. 钢铁研究总院连铸技术国家工程研究中心,北京 100081
- 折叠
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(975～1 025 ℃)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.
Abstract
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 nor-malizing 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 in-clusions decreases to varying degrees,and the influence of normalizing temperature on the volume fraction of inclu-sions is nonlinear.The influence of normalizing time which is from 4 min to 6 min,on the size,the distribution den-sity and the volume fraction of inclusions is nonlinear.The distribution density of the inclusions was the most impor-tant effect on the iron loss of the finished product,and the effect of the volume fraction of the inclusions was not ob-vious.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Key words
high-grade non-oriented silicon steel/inclusions/normalizing引用本文复制引用
出版年
2024
NETL
NSTL
万方数据