摘要
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。
The influence of punching process on cutting edge microstructure and magnetic properties of non-oriented silicon steel 50WW800was studied by observing microstructure and measuring microhardness near cutting edge.The residual stress distribution in the silicon steel tooth and magnetic properties were measured.Effect of annealing at 750 ℃ on microstructure and magnetic properties of the silicon steel was analyzed.The results show that a cut-edge hardening layer up to 0.4 mm is observed,residual stress increases rapidly near cutting edge due to punching process,which lead to power loss increasing.After annealing,deformation and strain hardened layer of the steel are reduced,the residual stress decreases,which lead to power loss decreasing.
出处
《材料热处理学报》
EI
CAS
CSCD
北大核心
2014年第S1期154-159,共6页
Transactions of Materials and Heat Treatment
基金
华中科技大学-WISCO联合实验室项目
关键词
冲剪加工
无取向硅钢
残余应力
组织
铁损
punching process
non-oriented silicon steel
residual stress
microstructure
power loss
