通过观察冲剪边缘组织,测量冲剪边缘的显微硬度、残余应力的分布情况和磁性能的变化研究了冲剪加工对无取向硅钢50WW800边缘组织和磁性能的影响.对冲剪后硅钢片进行750℃退火,分析退火对组织和磁性能的影响.结果表明,硅钢片剪切边缘会存在0.4 mm的形变硬化层,边缘应力大,铁损增加.退火后变形减小,形变硬化层变小,残余应力大幅度减少,铁损减少.
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