水下纳秒激光微孔加工实验研究  

Experimental study on laser machining hole in water

作　　者：邓宇[1] 郭钟宁[1] 连海山[1] 黄志刚[1] 

机构地区：[1]广东工业大学机电工程学院,广州510006

出　　处：《现代制造工程》2016年第7期1-5,共5页Modern Manufacturing Engineering

基　　金：国家自然科学基金面上项目(51175901)

摘　　要：为了分析激光功率与水深对激光水下微孔加工质量的影响,利用纳米激光器进行了全面的实验研究。在黄铜(T1)、钢(S304L)和铝合金(1050)上进行了孔径为96μm的微孔加工,并对其加工质量指标:如孔径、孔深以及粗糙度等进行测量分析。实验表明,水环境可以有效调整激光对工件材料的作用,约束激光等离子体,防止材料的熔融涂覆,从而提高加工精度。最后,基于热力学及空化现象的研究,分析了水环境对加工质量的影响机制,提供了工艺编制的理论基础。With application of nano-second laser machine, the impact of laser power and the depth of water on the quality of mi- cro-hole machining was comprehensive investigated via experiments. The experiments were carried out on Copper （ T1 ） , Steel （S304L） and Aluminum alloy （ 1050 ）. The quality of the micro-hole, like diameter, depth, roundness, roughness and taper, are measured. It is found out that, in water, the laser induced ionization is better refined, the thermal effect zone is limited and the ma- terial removed is prevented from recoating. And there all helps to improve the quality. Based on the experimental result, the thermal dynamic theory and the bubble dynamic ,the mechanism of interaction between water and laser machining was investigated, and finally provide a theoretical reference for the process.

关 键 词：激光 激光加工 空化 激光钻孔 

分 类 号：TN24[电子电信—物理电子学]