高温化学辅助激光加工微孔孔貌的优化
Optimization of micro-hole morphology in high-temperature chemical-assisted laser processing
王秦阳 1孙树峰 1王海涛 1张丰云 1王茜 1王雅迪 1魏涛 1刘训欢 1王萍萍2
作者信息
- 1. 青岛理工大学机械与汽车工程学院,山东青岛 266520
- 2. 青岛理工大学机械与汽车工程学院,山东青岛 266520;青岛理工大学信息与控制工程学院,山东青岛 266520
- 折叠
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.
Abstract
This study investigated the manufacturing of micro-holes in Inconel 718 material using high-tempera-ture 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 environ-ments.Additionally,the study compared the morphological differences of micro-holes under ambient air and high-temperature 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-tem-perature 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 micro-pores without recast layer,with a smaller heat-affected zone and better roundness.
关键词
激光材料加工/激光化学/微孔/激光脉冲/脉冲延迟Key words
laser material processing/laser chem-istry/micro-holes/laser pulses/pulse delay引用本文复制引用
基金项目
高等学校学科创新引智计划(D21017)
国家一带一路创新人才交流计划(DL2021025003L)
山东省重大科技创新项目(2019JZZY010402)
青岛西海岸新区科技项目(2021-70)
中国-斯洛伐克交流项目(2022-5-12)
出版年
2024
NETL
NSTL
万方数据