机械剪切对无取向硅钢磁性能的影响  

Effect of shearing on the magnetic properties of industrialnon-oriented silicon steel sheets

作　　者：车尚峰 张峰[1] 王波[1] CHE Shangfeng;ZHANG Feng;WANG Bo(Central Institute,Baoshan Iron&Steel Co.,Ltd.,Shanghai 201900,China)

机构地区：[1]宝山钢铁股份有限公司中央研究院,上海201900

出　　处：《电工钢》2024年第6期20-25,共6页ELECTRICAL STEEL

基　　金：国家重点研发计划“稀土新材料”重点专项(2023YFB3507602)。

摘　　要：结合工业化生产的无取向硅钢,开展了剪切间隙、试样尺寸、测试方向和材料的屈强比对磁性能的影响研究。结果表明,随着机械剪切间隙的增加,成品试样厚度方向上剪切面所占的比例逐渐变少,试样的铁损、磁感出现了不同程度的劣化。其中,铁损的劣化率远大于磁感的劣化率。平行轧向的试样铁损劣化率远大于垂直轧向的试样。此外,随着剪切次数的增加和剪切试样尺寸的减小,试样的铁损、磁感也会出现相应的劣化,并且还会受到材料的屈强比影响。材料的屈强比越高,经过机械剪切之后的试样磁性能劣化就越明显。Based on the industrial manufacture of non-oriented silicon steel sheets,the influence of shear gap size,sample size,sample direction,and the ratio of yield and tensile on the magnetic properties were studied.The results show that with the increase of shear gap,the proportion of shear plane in thickness direction decreases gradually.Thus,the iron loss and magnetic induction will deteriorate by different degree,and the iron loss degradation rate is much higher than the magnetic induction degradation rate.Moreover,the iron loss degradation rate in the L direction is much higher than that in the C direction.With the decrease of sheared sample size,the iron loss and magnetic inductance will also deteriorate and are affected by the yield ratio of the material.The deterioration rate of magnetic properties is obvious increase with the increase of yield ratio for the sheared sample.

关 键 词：无取向硅钢 机械剪切 应力 显微组织 屈强比 磁性能 

分 类 号：TG142.77[一般工业技术—材料科学与工程]