激光刻痕对取向电工钢磁畴和铁损的影响
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摘要
为了研究激光刻痕工艺参数对取向电工钢表面的磁畴形貌、刻痕线宽度和铁损的影响规律,开展了激光刻痕工艺试验。结果表明,激光刻痕后取向电工钢表面的磁畴宽度明显细化,且随着输入电流的增加,磁畴宽度先减小后增大;刻痕线宽度随着输入电流的增加而增大。对于本次试验样品,通过对比分析,确定最佳激光刻痕工艺参数为电流为12A,激光频率为5kHz,刻痕速度为800mm/s,该参数下铁损改善率可达11.81%。
In order to study the effects of laser scribing parameters on the magnetic domain morphology,the notch width and the iron loss of the grain-oriented electrical steel,laser scribing test was conducted.The results showed that the magnetic domain width on the surface of the grain-oriented electrical steel after laser scribing was significantly refined,and decreased first and then increased with the increase of the input current.The notch width increased with the increase of the input current.Through comparative analysis,the optimal laser scribing parameters were the input current of 12 A,the laser frequency of 5 kHz and the scribing speed of 800 mm/s for the experimental sample,and the improvement rate of the iron loss could reach 11.81%.
In order to study the effects of laser scribing parameters on the magnetic domain morphology,the notch width and the iron loss of the grain-oriented electrical steel,laser scribing test was conducted.The results showed that the magnetic domain width on the surface of the grain-oriented electrical steel after laser scribing was significantly refined,and decreased first and then increased with the increase of the input current.The notch width increased with the increase of the input current.Through comparative analysis,the optimal laser scribing parameters were the input current of 12 A,the laser frequency of 5 kHz and the scribing speed of 800 mm/s for the experimental sample,and the improvement rate of the iron loss could reach 11.81%.
引文
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[3]王良芳.我国电工钢生产现状及发展建议[J].中国冶金,2004,14(7):16.
[4]黎先浩,孟小涛,赵鹏飞,等.高磁感取向硅钢研发现状与展望[J].中国冶金,2019,29(1):1.
[5]夏彬,韩松,张楠,等.硅钢的研究现状及发展趋势[J].中国冶金,2018,28(6):9.
[6] Pfützner H,Zehetbauer M.On the mechanism of domain refinement due to scratching[J].Japanese Journal of Applied Physics,1982,21(9):580.
[7] Chukwuchekwa N,Moses A J,Anderson P.Study of the effects of surface coating on magnetic barkhausen noise in grain-oriented electrical steel[J].IEEE Transactions on Magnetics,2012,48(4):1393.
[8] WANG H,LI C S,MEI R B,et al.Effect of ball scribing on magnetic shielding efficiency of grain-oriented silicon steel[J].Journal of Iron and Steel Research,International,2014,21(7):679.
[9] Lahn L,Wang C Y,Allwardt A,et al.Improved transformer noise behavior by optimized laser domain refinement at ThyssenKrupp electrical steel[J].IEEE Transactions on Magnetics,2012,48(4):1453.
[10]何忠治,赵宇,罗海文.电工钢[M].北京:冶金工业出版社,2012.
[11]李海蛟,杨平,蒋奇武,等.取向硅钢激光刻痕工艺参数优化及相关原理分析[J].金属功能材料,2015,22(1):11.
[12]杨玉玲,孙凤久,齐小龙,等.改进型Fe3O4磁流体的研制及带膜磁畴观察[J].金属学报,2001,37(9):1005.
[13]祁烁,王丽芝.关于激光刻痕处理取向硅钢的时效性质的研究[J].沈阳化工学院学报,2002,16(2):147.
[14] Krause R F,Rauch G C,Kasner W H,et al.Effect of laser scribing on the magnetic properties and domain structure of high-permeability 3%Si-Fe[J].Journal of Applied Physics,1984,55(6):2121.