激光刻痕工艺参数对取向硅钢表面质量和磁性能的影响  

Effects of Laser Scribing Parameters on Surface Quality and Magnetic Properties of Grain Oriented Silicon Steel

作　　者：王祥 魏新帝 朱桢 庞静希 闫成亮 薛慧 Wang Xiang;Wei Xindi;Zhu Zhen;Pang Jingxi;Yan Chengliang;Xue Hui(Wuxi Putian Iron Core Co.,Ltd.,Wuxi 214000,Jiangsu,China;Anqing Xinpu Electric Equipment Co.,Ltd.,Anqing 246001,Anhui,China)

机构地区：[1]无锡普天铁心股份有限公司基础材料研究院,江苏无锡214000 [2]安庆新普电气设备有限公司,安徽安庆246001

出　　处：《应用激光》2025年第2期70-78,共9页Applied Laser

摘　　要：使用激光刻痕工业设备,采用不同的激光刻痕工艺参数进行刻痕实验,分析了刻痕工艺参数对0.27 mm取向硅钢的表面质量和磁性能的影响,从而获得兼顾表面质量和磁性能的激光刻痕工艺。结果表明:激光刻痕会损伤取向硅钢表面绝缘涂层,随着激光功率增大,激光对绝缘涂层的损伤逐渐加深,当激光功率为4.5 kW时,刻槽的平均深度超过了绝缘涂层的总厚度,使取向硅钢基板暴露;随着刻痕间距增大,激光刻痕产生的铁损降比先增大后减小,刻痕间距过大和过小都不能获得最好的降铁损效果;激光刻痕后,取向硅钢磁感总体降低,并且激光功率越大,磁感损失越多,激光功率在3.5~4.3 kW时所导致的磁感损失均可以控制在0.01 T以内。在所研究的工艺范围内,最优的激光刻痕工艺参数为激光功率4.3 kW、刻痕间距5 mm,该刻痕工艺可将取向硅钢铁损降低13.43%,同时,不明显损坏表面绝缘涂层。This study investigates the effects of laser scribing process parameters on the surface quality and magnetic properties of 0.27 mm thick grain-oriented silicon steel.Experiments were conducted using industrial laser scribing equipment to determine the optimal parameterization for balancing surface quality and magnetic properties.The results show that laser scribing damages the insulation coating on the surface of grain-oriented steel and this damage is deepened with the increase of laser power.When the laser power is 4.5 kW,the average depth of groove exceeds the total thickness of insulation coating,resulting in the exposure of substrate.With the increase of notch spacing,iron lose reduction ratio increases first and then decreases,so the best result could not be obtained if the notch spacing is too large or too small.The magnetic induction of grain oriented silicon steel reduces overall after laser scribing,and the reduction expands with greater laser power.However,the reduction of magnetic insulation can be controlled within 0.01 T when the laser power is in the range of 3.54.3 kW.Within the scope of the process examined in this study,the optimal laser scribing parameters are laser power of 4.3 kW and notch spacing of 5 mm,which can reduce the iron loss of grain-oriented silicon steel by 13.43%,with hardly noticeable damage of insulation coating.

关 键 词：激光刻痕 取向硅钢 磁畴细化 磁性能 绝缘涂层 

分 类 号：TM275[一般工业技术—材料科学与工程] TN249[电气工程—电工理论与新技术]