Effect of laser scribing on magnetic domain and iron loss #br# of grainoriented electrical steel
KONG Jiawei，YANG Ping，WU Siyu，SHI Jianrui，NIU Feng，WANG Aixing
(1. School of Materials Science and Engineering, University of Science and Technology Beijing,
Beijing 100083, China；2. Shougang Qian′an Iron and Steel Co., Ltd., Qian′an 064400, Hebei, China;
3. School of the Humanities, Gengdan Institute of Beijing University of Technology, Beijing 101300, China)
In order to study the effects of laser scribing parameters on the magnetic domain morphology, the notch width and the iron loss of the grainoriented electrical steel, laser scribing test was conducted. The results showed that the magnetic domain width on the surface of the grainoriented 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%.
孔加伟，杨平，吴思雨，石建锐，牛枫，王爱星. 激光刻痕对取向电工钢磁畴和铁损的影响[J]. 中国冶金, 2019, 29(6): 43-46.
KONG Jiawei，YANG Ping，WU Siyu，SHI Jianrui，NIU Feng，WANG Aixing. Effect of laser scribing on magnetic domain and iron loss #br# of grainoriented electrical steel[J]. China Metallurgy, 2019, 29(6): 43-46.
