脉冲光纤激光金属表面放射性物质去污工艺研究  

Research of Decontamination Process of Radioactive Material on Metal Surface by Pulse Fiber Laser

作　　者：李勇[1,2] 秦应雄 杨未茜[3] Li Yong;Qin Yingxiong;Yang Weixi(Wuhan Vocational College of Software And Engineering,Wuhan,Hubei 430205,china;National Engineering Research Center for Laser Processing,Huazhong University of Science and Technology,Wuhan,Hubei 430074,china;School of Optical Information and Energy Engineering,Wuhan Institute of Technology,Wuhan,Hubei 430205,china)

机构地区：[1]武汉软件工程职业学院,湖北武汉430205 [2]华中科技大学激光加工国家工程研究中心,湖北武汉430074 [3]武汉工程大学光电信息与能源工程学院,湖北武汉430205

出　　处：《应用激光》2019年第6期1006-1011,共6页Applied Laser

基　　金：武汉市科技局应用基础前沿专项课题资助(项目编号:2019010701011383)。

摘　　要：利用脉冲光纤激光对金属表面放射性物质去污工艺进行了实验研究,分析了去污工艺实验中若干关键因素对去污深度及粗糙度的影响。研究发现,激光脉冲宽度与单次去除深度及底纹粗糙度成正比,扫描路径主要影响去除效率和底纹的粗糙度,氮气作为辅助气体不能有效加深去污深度和改善底纹粗糙度,在多次扫描去污时,去污深度与扫描次数和去污区域大小有关,在去污区域为5 mm×5 mm时,去污深度与扫描次数成指数增长,在去污区域为50 mm×50 mm时,去污深度与扫描次数近似成倍数增长。By using pulsed fiber laser to study the decontamination process of metal surface radioactive material, The influence of some key factors on decontamination depth and roughness was Analyzed. The results show that the laser pulse width is proportional to the single removal depth and the shading roughness, the scanning path mainly affects the removal efficiency and the roughness of the shading, and the nitrogen as the auxiliary gas can not effectively deepen the decontamination depth and improve the shading roughness, and the decontamination depth is related to the number of scans and the size of the decontamination area during the multiple sweep Decontamination. When the decontamination area is 5 mm*5 mm, the decontamination depth is exponential with the number of scans, and the depth of decontamination and the number of sweeps are approximately doubled when the decontamination area is 50 mm×50 mm.

关 键 词：脉冲激光 放射性 去污工艺 关键因素 

分 类 号：TN248[电子电信—物理电子学]