摘要
研究采用高温化学辅助纳秒激光加工方法,在Inconel 718材料上制造微孔。研究了在空气和高温化学两种环境下,不同脉冲数对微孔直径、深度和孔壁特征的影响,并比较了空气和高温化学下微孔的形貌差异,对高温化学辅助纳秒激光加工微孔的材料去除过程进行了深入研究。通过实验发现较低的脉冲频率对改善高温化学下的微孔形态有益。最后,研究了脉冲延迟对高温化学蚀刻辅助激光加工微孔的影响,并探讨了微孔形成的脉冲延迟规律。结果表明,当延迟时间为1 s时,总加工时间为15 s,孔的圆度改善到0.981,孔壁更加光滑,热影响区也随之减小。增大一定的脉冲延迟可以获得无重铸层、热影响区较小且圆度较好的高质量微孔。
This study investigated the manufacturing of micro-holes in Inconel 718 material using high-temperature chemical-assisted nanosecond laser machining.The study examined the effects of various pulse numbers on the diameter,depth,and wall characteristics of micro-holes in both ambient air and high-temperature chemical environments.Additionally,the study compared the morphological differences of micro-holes under ambient air and hightemperature chemical conditions and thoroughly investigated the material removal process involved in fabricating micro-holes using high-temperature chemical-assisted nanosecond laser machining.The experimental results demonstrated that using lower pulse frequencies had a beneficial impact on enhancing the morphology of micro-holes in high-temperature chemical environments.Finally,the study investigated the influence of pulse delay on the laser machining of micro-holes with high-temperature chemical etching assistance and analyzed the patterns of pulse delay in micro-hole formation.The results show that when the delay time is 1 s,the total processing time is 15 s,the roundness of the hole improves to 0.981,the hole wall becomes smoother,and the heat-affected zone decreases accordingly.Increasing a certain pulse delay can achieve high-quality micropores without recast layer,with a smaller heat-affected zone and better roundness.
作者
王秦阳
孙树峰
王海涛
张丰云
王茜
王雅迪
魏涛
刘训欢
王萍萍
WANG Qinyang;SUN Shufeng;WANG Haitao;ZHANG Fengyun;WANG Xi;WANG Yadi;WEI Tao;LIU XunHuan;WANG Pingping(School of Mechanical and Automotive Engineering,Qingdao University of Technology,Qingdao Shandong 266520,China;School of Information and Control Engineering,Qingdao University of Technology,Qingdao Shandong 266520,China)
出处
《激光杂志》
CAS
北大核心
2024年第8期180-188,共9页
Laser Journal
基金
高等学校学科创新引智计划(No.D21017)
国家一带一路创新人才交流计划(No.DL2021025003L)
山东省重大科技创新项目(No.2019JZZY010402)
青岛西海岸新区科技项目(No.2021-70)
中国-斯洛伐克交流项目(No.2022-5-12)。
关键词
激光材料加工
激光化学
微孔
激光脉冲
脉冲延迟
laser material processing
laser chemistry
micro-holes
laser pulses
pulse delay
