取向硅钢激光刻痕工艺参数优化及相关原理分析

Optimization of laser scribing parameters and the analysis of underlyingmechanism in a grain-oriented silicon steel

对120牌号取向硅钢成品板进行激光刻痕,研究工作电流、激光频率、刻痕速率等参数对细化磁畴及铁损值的影响规律。在此基础上分析了不同工艺下的刻痕表面形貌及磁畴细化的程度。结果表明,该样品优化的刻痕参数:工作电流12A、激光频率3 500Hz、刻痕速率800mm/s,该参数下P1.7可降低9.45%。不同参数下样品表面刻痕形貌差异较大,刻痕蚀点刚好连续时磁畴细化效果最好;激光刻痕后,磁畴宽度明显减小,但显著细化区分布很不均匀。

A 120-brand grain-oriented silicon steel was scribed using laser beam.The parameters such as working current,frequency and scribing rate and the corresponding iron loss were examined to reveal the effect on domain refinement.Then the surface morphologies of scribed samples by different parameters and the effect of domain refinement were analyzed.The results show that the reduction in iron loss is most significant under the parameters of 12 A working current,3 500 Hz in frequency and 800mm/s of scribing rate.The surface morphologies of scribed samples under different parameters exhibit great diversity,and the effect of domain refinement is best when the scribing pots build a continuous band.After laser scribing,the width of domain obviously reduced,but the refinement is ununiform.