激光精密加工,点亮智能制造  

Laser Precision Processing Lightens Intelligent Manufacturing

作　　者：李欣欣 李兴 王翼猛 管迎春[1,2,3] 王华明 Li Xinxin;Li Xing;Wang Yimeng;Guan Yingchun;Wang Huaming(School of Mechanical Engineering and Automation,Beihang University,Beijing 100083,China;National Engineering Laboratory of Additive Manufacturing for Large Metallic Components,Beihang University,Beijing 100083,China;International Research Institute for Multidisciplinary Science,Beihang University,Beijing 100083,China)

机构地区：[1]北京航空航天大学机械工程与自动化学院,北京100083 [2]北京航空航天大学大型金属构件增材制造国家工程实验室,北京100083 [3]北京航空航天大学国际交叉科学研究院,北京100083

出　　处：《中国激光》2022年第19期120-136,共17页Chinese Journal of Lasers

基　　金：北京市自然科学基金-海淀原始创新联合基金(L202006)。

摘　　要：激光精密加工技术在航空航天、集成电路、医疗器械等战略新兴产业领域展现出了巨大优势。本文重点介绍了北京航空航天大学激光团队近年来在激光精密抛光、金属-复合材料高强连接、一站式功能表面制备、超快激光刀钻骨、超快激光助力硅晶圆制造等方面的研究进展,对相关结果进行分析与总结,并展望了激光精密加工技术的未来发展方向和应用前景。Significance Laser precision processing exhibits an accuracy that ranges from microns to tens of microns and provides advantages such as high processing accuracy,application to a wide range of materials,and minor thermal damage.In 1986,Dr.Mourou and Strickland used microwave amplification technology to amplify and compress laser-chirped pulses and achieved results better than those of traditional methods such as Q-switching and mode-locking,leading to the rapid development of laser precision processing technology.Because of the increasing demand for lightweight components and high-value-added products in critical industries such as aerospace,automobile,electronics,and medical devices,laser precision processing technology has become essential in precise machining,surface finishing,high-performance joining,and functional surfaces for drag reduction,stealth,and anti-icing.In this paper,we summarize our current work on laser precision processing in recent years.The work includes laser precision polishing,metal-composite high-strength joining,one-stop fabrication of functional surfaces,ultrafast laser drilling on bones,and ultrafast laser-assisted silicon wafer manufacturing.Progress The laser precision polishing technique offers an adaptable,accurate,and environmentally friendly solution for enhancing the surface quality of additive-manufactured metallic components.The technique can considerably reduce the surface roughness and average grain size of the original laser-additive-manufactured metallic alloys.Moreover,porosity can be reduced in the laser-polished layer.Laser precision polishing can substantially improve mechanical properties,such as microhardness,residual stress,tensile strength,and fatigue performance,and reduce corrosion resistance.Magneticfield-assisted polishing methods are also proposed to improve the uniformity in surface quality and performance.The high-strength laser-joining method is proposed to produce hybrid joints of titanium alloys and carbon-fiberreinforced polymers(CFRPs).Before the laser-

关 键 词：激光技术 激光精密加工 激光抛光 异质材料连接 功能微纳结构 骨钻孔 智能制造 

分 类 号：V261.8[航空宇航科学与技术—航空宇航制造工程]