光纤激光切割碳纤维复合材料的工艺试验研究

Experimental Investigation on Fiber Laser Cutting of CFRP

进行了1 kW光纤激光切割碳纤维复合材料的工艺试验,采用单因素法研究了激光功率、切割速度、辅助气体压力对切缝宽度、切口锥度以及热影响区的影响规律。利用正交试验确定了对切缝宽度与热影响区宽度产生影响的因素的主次关系。结果表明,切缝宽度、切口锥度和热影响区宽度均随激光功率的增加而变大;随切割速度的增加,切缝宽度、热影响区宽度均变小,切口锥度先变大后变小;随辅助气体压力的增加,切缝宽度、切口锥度均变大,热影响区宽度变小。当激光功率为100 W,切割速度为1 m/min,辅助气体压力为0.5 MPa时,切割效果较好,切割效率较高。

In this paper, experimental investigation on 1 kW fiber laser cutting carbon fiber composite materials is carried out. The influence of laser power, cutting speed, and assistant gas pressure on the slit width, the heat-affected zone and the slit taper is studied using single factor method. Orthogonal experiments are used to study the main factor that affect the width of the slit and the width of the heat-affected zone. The results show that the slit width, notch taper and heat-affected zone increase with the increasing of laser power. With the cutting speed increasing, the width of the slit and the heat-affected zone decreased, and the notch taper increased first and then decreased. With the increase of the assistant gas pressure, the slit width and the taper of the incision increased, and the width of the heat affected zone decreased. When the laser power, the cutting speed, and the assistant gas pressure is 100 W, 1 m/min, and 0.5 MPa respectively, the cutting quality is better, and the cutting efficiency is higher.