碳纤维增强树脂基复合材料飞秒激光精密切割工艺研究  

Study on Precision Cutting of Carbon Fiber Reinforced Composites Using Femtosecond Laser

作　　者：薛博 徐洁洁[1] 张寰臻 崔梦雅 黄婷[1] 肖荣诗[1] XUE Bo;XU Jiejie;ZHANG Huanzhen;CUI Mengya;HUANG Ting;XIAO Rongshi(Faculty of Materials and Manufacturing,Beijing University of Technology,Beijing 100124,China;School of Mathematics and Physics Science and Engineering,Hebei University of Engineering,Handan 056038,China)

机构地区：[1]北京工业大学材料与制造学部,北京100124 [2]河北工程大学数理科学与工程学院,河北邯郸056038

出　　处：《电加工与模具》2022年第5期35-40,共6页Electromachining & Mould

基　　金：北京市教委科技重点项目(KZ202010005011)。

摘　　要：针对碳纤维增强树脂基复合材料的切割问题,采用515 nm波长飞秒激光进行切割工艺研究,分别用热影响区宽度、切缝锥角、切割表面粗糙度表征切割质量,用等效切割速度表征切割效率,研究了激光功率、扫描速度、脉冲频率对切割质量和效率的影响规律,并进行最终的工艺优化。结果表明:在激光功率20 W、扫描速度2500 mm/s、脉冲频率50 kHz的条件下,可以获得较优的切割质量与效率,得到的切缝周围热影响区宽度约2μm、切缝锥角约1.5°、切割表面粗糙度约Ra1.6μm。Laser cutting of carbon fiber reinforced composites was conducted using a femtosecond laser with a wavelength of 515 nm.The cutting quality was characterized by the width of heat affected zone,taper angle of slit and the cutting surface roughness,and the cutting efficiency was characterized by the equivalent cutting speed.The effects of laser power,scanning speed and pulse frequency on the cutting quality and efficiency were studied,and the final process optimization was carried out.The result showed that better cutting quality and efficiency could be obtained under the conditions of laser power 20 W,scanning speed 2500 mm/s and pulse frequency 50 kHz.In result,The width of heat affected zone around the slit,the cutting taper angle and cutting surface roughness is about 2μm,1.5°and Ra1.6μm,respectively.

关 键 词：飞秒激光 激光切割 碳纤维增强树脂基复合材料 

分 类 号：TG665[金属学及工艺—金属切削加工及机床]