激光刻痕对取向硅钢铁损和磁畴的影响规律研究

功能材料, 2016, 47(2): 2160-2170. doi: 10.3969/j.issn.1001-9731.2016.02.032

激光刻痕对取向硅钢铁损和磁畴的影响规律研究

杨富尧 ^1, , 古凌云 ^2, , 马光 ^3, , 陈新 ^4, , 任宇 ^5, , 薛志勇 ^6,

1.北京科技大学材料科学与工程学院,北京100083;国网智能电网研究院电工新材料研究所,北京100052

2.华北电力大学能源动力与机械工程学院,北京,102206

3.国网智能电网研究院电工新材料研究所,北京,100052

4.国网智能电网研究院电工新材料研究所,北京,100052

5.华北电力大学能源动力与机械工程学院,北京,102206

6.华北电力大学能源动力与机械工程学院,北京,102206

基金项目: 国家电网公司科技资助项目(SGRI-WD-71-13-002,SGRI-WD-71-14-002)

关键词：取向硅钢 , 激光刻痕 , 铁损 , 细化磁畴

Effect of laser scribing on core loss and magnetic domain of grain-oriented silicon steel

Keywords： grain-oriented silicon steel , laser scribing , core loss , domain refinement

激光刻痕是一种降低取向硅钢片铁损的有效方法.选取激光功率、扫描速度、激光频率、刻痕间距作为工艺变量,对取向硅钢片进行刻痕实验,并利用磁性能测试系统和磁畴观测仪研究了不同工艺参数对激光刻痕后取向硅钢铁损和磁畴的改善效果.结果表明,取向硅钢片的平均铁损降低率随激光功率和刻痕间距增大而先增大后减小,随激光频率和扫描速度增大而减小.经不同工艺参数刻痕后,硅钢片的磁畴宽度均有所减小,且磁畴宽度的变化规律与铁损降低率的变化规律相吻合.优化了取向硅钢片的激光刻痕工艺参数,利用此工艺刻痕后,取向硅钢片的平均铁损降低率达8％.

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