摘要
应用双镀层高温高频光栅和云纹干涉法对激光加工硅钢片降低铁损的残余变形进行了测量研究。分别对采用ＣＯ２连续激光和ＹＡＧ脉冲激光不同参数处理后硅钢片表面的残余变形进行了测量，对双镀层Ｃｒ－Ｃｒ光栅的制作方法、云纹干涉法测量残余变形的原理进行了讨论。实验结果表明，硅钢片在激光加工后，试件表面产生负性残余应变是细化磁畴。
In combination of two deposited layers grating for high temperature and moire interferometry, the residual deformations of silicon steel sheets with lowered core loss by strong power laser were measured. The silicon sheets were processed with different parameters of power under YAG and CO 2 laser. The residual deformation rules along x and y axes were obtained. The experimental results verified that the specimen surface was under the state of compression after processed with strong power laser. And thus the ferromagnetic domain was finde, the core loss was lowered.
出处
《光学技术》
CAS
CSCD
1999年第3期19-21,共3页
Optical Technique
关键词
云纹干涉法
硅钢片
铁损
测量
激光加工
high temperature grating
moire interferometry
silicon sheet
core loss
