摘要
随着家电行业变频技术的实施和推广、新能源汽车产业的兴起和电机节能及高效化发展,市场对无取向硅钢的需求持续大幅上升,但同时对无取向硅钢低铁损、高磁感的磁性能要求愈加苛刻。研究表明,钢中小于1μm的微细夹杂物(如MnS、AlN、Al_(2)O_(3)、Cu_(2)S)对其磁性能的劣化最为严重,因此,如何控制无取向硅钢中微细夹杂物的类型、总量、尺寸分布等备受关注。本文归纳总结了研究者对影响磁性能的微细夹杂物尺寸分布界定,从控制机理上分析了钙、稀土变质夹杂物的根本原理,综述了国内外相关生产企业、科研院所微细夹杂物控制工艺技术进展,并在此基础上,结合笔者所在团队科研成果指出了当前无取向硅钢微细夹杂物控制存在的不足以及未来发展趋势,并提出了稀土变质微细夹杂物未解决的关键科学问题。
With the implementation and promotion of frequency conversion technology in the household electrical appliance industry,the rise of new energy automobile industry and the development of motor energy saving and high efficiency,the market demand for non-oriented silicon steel continues to rise significantly.Furthermore,the requirements for the magnetic properties of non-oriented silicon steel with low iron loss and high magnetic induction are more stringent.Studies have shown that the micro inclusions(such as MnS,AlN,Al_(2)O_(3),Cu_(2)S)in the steel less than 1μm have the most serious deterioration of the magnetic properties.So,how to control the type,total amount and size distribution of micro inclusions in non-oriented silicon steel has attracted much attention.In this paper,the definition of the size distribution of micro inclusions that affect the magnetic properties by different researchers is summarized.And the fundamental principles of calcium and rare earth of metamorphic inclusions are analyzed from the control mechanism,the progress of micro inclusion control technology in relevant domestic and foreign production enterprises and scientific research institutes is reviewed.On this basis,combined with the scientific research achievements of the team,the author points out the shortcomings of the current non oriented silicon steel micro-inclusions control and the future development trend,and also the key scientific problems that have not been solved in rare earth modification of micro-inclusions are put forward.
作者
王海军
牛宇豪
凌海涛
乔家龙
何飞
仇圣桃
WANG Haijun;NIU Yuhao;LING Haitao;QIAO Jialong;HE Fei;QIU Shengtao(School of Metallurgical Engineering,Anhui University of Technology,Ma’anshan 243032,Anhui,China;Central Iron and Steel Research Institute Co.,Ltd.,Beijing 100083,China)
出处
《材料导报》
EI
CAS
CSCD
北大核心
2024年第3期173-181,共9页
Materials Reports
基金
国家自然科学基金(51804003,52274312)
安徽省自然科学基金(2008085QE225)
安徽省教育厅科学研究重点项目(2022AH050291)。
关键词
无取向硅钢
微细夹杂物
磁性能
变质
nonoriented silicon steel
micro inclusions
magnetic property
modification
