Experimental Research on Femtosecond Laser Polishing of GH4099 Honeycomb Core
CHEN Feng1, LIU Qiaomu2, DU Peng2, HU Zengrong3
(1. State Key Laboratory of Mechanics and Control of Mechanical Structures, College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China; 2. AVIC Gas Turbine Establishment, Chengdu 610500, China; 3. School of Urban Rail Transportation, Soochow University, Suzhou 215131, China)
Abstract：The femtosecond laser “cooling” polishing method was proposed for processing of metallic honeycomb core under air atmosphere. The polishing process parameters were optimized by the two sliding-level method, and process window prediction model of GH4099 sheet was determined firstly. The set of optimal process parameters for least surface roughness combined with processing efficiency is an off-focus distance of 0.2mm, a laser powder of 0.3W, a scanning space of 10μm, and a scanning speed of 2.3m/s. Under this condition, the surface roughness of GH4099 honeycomb core specimen decreased by 65%, and the polishing efficiency is 1.2h/(210mm×210mm).
陈峰，刘巧沐，杜鹏，胡增荣. GH4099蜂窝芯飞秒激光抛光试验研究[J]. 航空制造技术, 2019, 62(23/24): 46-51.
CHEN Feng1, LIU Qiaomu2, DU Peng2, HU Zengrong3. Experimental Research on Femtosecond Laser Polishing of GH4099 Honeycomb Core. Aeronautical Manufacturing Technology, 2019, 62(23/24): 46-51.
2019, 
