纳秒脉冲激光在Q235表面污染漆层的清洗工艺研究  

Study on Cleaning Process of Q235 Surface Contaminated Paint by Nanosecond Pulse Laser

作　　者：招观荣 雷泽勇[1] 邓健[1] 黄灿裕 Zhao Guanrong;Lei Zeyong;Deng Jian;Huang Canyu(School of Mechanical Engineering,Nanhua University,Hengyang,Hunan 421001,China)

机构地区：[1]南华大学机械工程学院,湖南衡阳421001

出　　处：《机电工程技术》2023年第2期38-41,共4页Mechanical & Electrical Engineering Technology

基　　金：湖南省研究生科研创新项目资助(编号:QL20210220)。

摘　　要：为研究纳秒脉冲激光清洗在Q235钢表面污染漆层的清洗效果,探究激光工艺参数对去污效果的影响。在对样品预处理后均匀喷涂一层50μm厚的丙烯酸树脂漆并在其表面均匀涂上一层1 g/L的硝酸钴,采用纳秒脉冲激光器在不同的工艺参数下对样品进行除漆试验。采用3D电子显微镜、扫描电镜对样品表面进行二维形貌观察以及进行能谱仪EDS分析。结果表明:纳秒脉冲激光能有效去除样品表面污染层,随着激光能量密度的升高、激光扫描速度的降低以及清洗速度的降低,表面污染漆层去除得更为彻底。在激光能量密度为4.445 J/cm^(2),激光扫描速度为3000 mm/s,清洗速度为10 mm/s时,清洗效果较优。激光清洗通过选取合适的工艺参数,不仅可去除表面污染漆层,还能在很大程度上不损伤基材。In order to study the cleaning effect of nanosecond pulse laser cleaning on Q235 steel surface contaminated paint layer.To explore the effect of laser process parameters on decontamination.After pretreatment,the sample was uniformly sprayed with a layer of 50μm thick acrylic resin paint and coated with a layer of 1 g/L cobalt nitrate on its surface.Nanosecond pulsed laser was used to conduct paint removal tests on the sample under different process parameters.3D electron microscope and scanning electron microscope were used to observe the twodimensional morphology of the sample surface and EDS analysis was performed.The results show that the nanosecond pulse laser can effectively remove the contamination layer on the surface of the sample.With the increase of laser energy density,the decrease of laser scanning speed and the decrease of cleaning speed,the surface contamination layer can be removed more thoroughly.When the laser energy density is 4.445 J/cm^(2),the laser scanning speed is 3000 mm/s,and the cleaning speed is 10 mm/s,the cleaning effect is better.By selecting appropriate process parameters,laser cleaning can not only remove the surface contaminating paint layer,but also do not damage the substrate to a large extent.

关 键 词：激光清洗 Q235钢 纳秒脉冲激光 表面形貌 

分 类 号：TG665[金属学及工艺—金属切削加工及机床]