摘要
激光冲击强化技术是一种非接触、可控性强、强化效果突出的新型表面改性技术,利用激光冲击强化技术调控齿轮表层分布的残余应力场,对于提高齿轮的使用寿命具有重要意义。基于激光冲击强化齿轮表层残余应力作用机理,讨论分析激光能量、激光光斑直径、激光光斑搭接率以及激光冲击次数等4个工艺参数对齿轮残余应力的影响,归纳现有激光冲击强化复合技术的优势与不足,综述激光冲击-喷丸、激光淬火-激光冲击、超声冲击-激光冲击、脉冲电流辅助激光冲击等4种技术对残余应力的调控作用,最后对激光冲击技术强化齿轮表层残余应力研究进行总结,并对激光冲击发展应用进行展望。
Laser shock strengthening,a non-contact method with superior control and enhancement effects,offers innovative modifications to gear surfaces.By manipulating the residual stress field spread over the gear surface,this technology significantly improves gear lifespan.This study delves into the impact of laser shock strengthening on gear surface′s residual stress,exploring four crucial process parameters:laser energy,laser spot size,laser spot bonding rate,and laser shock frequency.It provides an in-depth discussion of their influence on gear′s residual stress while reviewing the merits and demerits of composite laser shock strengthening techniques currently available.The regulatory impacts of combined methods such as laser shock strengthening-shot peening,laser quenching-laser shock strengthening,ultrasonic impact peening-laser shock strengthening,and electropulsing-assisted laser shock strengthening on residual stress are also assessed.In conclusion,it summarizes research advancements concerning gear surface residual stress reinforcement by laser shock technology and forecasts future developments and applications of laser shock.
作者
王振
崔义龙
孙浩
侯海峰
王国浩
Wang Zhen;Cui Yilong;Sun Hao;Hou Haifeng;Wang Guohao(School of Aerospace Engineering,Zhengzhou University of Aeronautics,Zhengzhou 450046,Henan,China;Henan Aerospace Hydraulic Pneumatic Technology Co.,Ltd.,Zhengzhou 451191,Henan,China)
出处
《应用激光》
CSCD
北大核心
2024年第1期27-44,共18页
Applied Laser
基金
国家自然科学基金(51705471)
河南省高校重点科研项目(21A460026)。
关键词
激光冲击
齿轮残余应力
激光工艺参数
复合强化
laser shock
gear residual stress
laserprocess parameters
compound strengthening
