为了研究100W皮秒激光对碳纤维复合材料(CFRP)切割工艺, 采用单因素实验方法, 进行了理论分析和实验验证, 得到了平均功率、重复频率、扫描速率、扫描次数对热影响区及扫描深度的影响规律, 并对1.5mm厚碳纤维复合材料板进行了切割实验。结果表明, 选取平均功率为60W、重复频率为0.4MHz、扫描速率为10m/s、轨迹重复扫描20次、切缝上表面宽为350μm等适当参量时, 得到的直线切缝和圆形切孔的热影响区极小。这为皮秒激光切割CFRP的进一步研究与工业应用提供了参考。

In order to study the process of cutting carbon fiber reinforced plastics (CFRP) with 100W picosecond laser, theoretical analysis and experimental verivication were carried out by vaying a single affeting factor. Effect of average power, pulse repetition rate, scanning speed and number of repeat on the heat affected zone and scanning depth were studied. A piece of 1.5mm thick CFRP was cut in experiments. The results show that the cutting line and circular hole with almost no heat affected zone were obtained under the conditions of average power 60W, repetition rate 0.4MHz, scanning speed 10m/s, number of repeat 20 and upper surface width of the kerf 350μm. The study provides some reference for further academic research and industrial application of picosecond laser cutting CFRP.