烟草切丝机铜排链激光清洗试验研究  

Experimental Study on Laser Cleaning of Copper Row Chain of Tobacco Shredding Machine

作　　者：刘可欣 陈青欣 周萍芳 俞大祥[2] 王宽 何宗泰 许万[1] 杨奇彪[1] 刘顿[1] Liu Kexin;Chen Qingxin;Zhou Pingfang;Yu Daxiang;Wang Kuan;He Zongtai;Xu Wan;Yang Qibiao;Liu Dun(Ultrafast laser Processing Research Centre,School of Engineering,Hubei University of Technology,Wuhan 430068,Hubei,China;Wuhan Cigarette Factory,China Tobacco Hubei Industrial Co.,Ltd.,Wuhan 430000,Hubei,China)

机构地区：[1]湖北工业大学机械工程学院超快激光加工研究中心,湖北武汉430068 [2]湖北中烟工业有限责任公司武汉卷烟厂,湖北武汉430000

出　　处：《应用激光》2024年第11期92-101,共10页Applied Laser

基　　金：湖北省重点研发计划项目(2021BAA172)。

摘　　要：采用纳秒脉冲光纤激光器对烟草切丝机铜排链表面的污染物进行激光清洗,研究激光能量密度、扫描次数、光斑搭接率和脉冲宽度对清洗效果及表面形貌的影响规律,测量并分析激光清洗前后材料表面粗糙度、元素含量、维氏硬度与浸润性。试验结果表明,激光弹性振动剥离与热膨胀效应是去除铜链表面污染物的主要机制。在脉冲宽度为30 ns、重复频率为20 kHz、能量密度为2.66 J/cm^(2)、搭接率为65%且扫描一次的激光参数下对其表面污染物进行清洗,清洗后的材料表面粗糙度为2.5μm,表面元素C、O含量分别由46.99%和31.76%下降至14.44%和4.38%,而Cu含量由8.41%提高至54.37%。通过采用上述激光工艺参数,可在不损伤铜排链基体的条件下对表面污染物进行有效去除,并且在不降低表面硬度的条件下提高了其抗油污附着的能力。The nanosecond pulsed fiber laser was used for laser cleaning of contaminants on the surface of copper row chain of tobacco wire cutting machine.The effects of laser energy density,number of scans,spot lap rate and pulse width on the cleaning effect and surface morphology were studied,and the surface roughness,elemental content,Vickers hardness and wettability of the material before and after laser cleaning were measured and analyzed.The experimental results show that laser elastic vibration stripping and thermal expansion effect are the main mechanisms to remove contaminants on the surface of copper chains.The surface contaminants were cleaned under laser parameters with a pulse width of 30 ns,a repetition frequency of 20 kHz,an energy density of 2.66 J/cm^(2),a lap rate of 65%and a single scan,and the surface roughness of the cleaned material was 2.5μm,and the surface elemental C and O contents decreased from 46.99%and 31.76%to 14.44%and 4.38%,respectively,while the Cu content increased from 8.41%to 54.37%.By using the above-mentioned laser process parameters,the surface contaminants can be effectively removed without damaging the copper row chain matrix and their resistance to oil adhesion can be improved without reducing the surface hardness.

关 键 词：激光清洗 铜排链 能量密度 光斑搭接率 

分 类 号：TS432[农业科学—烟草工业]