激光清洗7075铝合金轮胎模具表面质量优化分析  

Optimization analysis of surface quality of laser-cleaned 7075 aluminium alloy tire mould

作　　者：王涛[1] 张译之 苗润芃 WANG Tao;ZHANG Yi-zhi;MIAO Run-peng(School of Mechanical Engineering,Hebei University of Technology,Tianjin 300132,China)

机构地区：[1]河北工业大学机械工程学院,天津300132

出　　处：《激光与红外》2022年第5期646-652,共7页Laser & Infrared

摘　　要：使用脉冲光纤激光器对铝合金轮胎模具表面污染物的清除有助于提高轮胎生产的质量,延长轮胎的使用寿命。研究不同能量密度和扫描速度下激光清洗的效果,通过扫描电镜观察每次清洗后材料的表面形貌,使用SHR112便携式粗糙度仪测量每次清洗后试件的表面粗糙度,得到最优参数,通过能谱仪分析最优参数下实验前后材料表面元素变化情况。实验表明,在激光功率为25 W,激光重复频率为50 kHz,激光能量密度为25.5 J/cm^(2),扫描速度为120 cm/s时,可完全清除污渍,最终材料表面粗糙度约为3.17μm,符合行业标准。清洗过后试件表面O、S含量降低,Al含量升高。该实验的完成有效合理地对铝合金表面进行了清洗。The removal of contaminants on the surface of aluminum alloy tire mold by using pulsed fiber laser is helpful to improve the quality of tire production and prolong the service life of tire.To study the effect of laser cleaning at different energy density and scanning speed,the surface morphology of the material after each cleaning is observed by scanning electron microscope,and the surface roughness of the sample after each cleaning is measured by SHR112 portable roughness meter,the optimum parameters are obtained,and the changes of surface elements are analyzed by energy dispersive spectrometer.The experimental results show that when the laser power is 25 W,the laser repetition frequency is 50 kHz,the laser energy density is 25.5 J/cm2,and the scanning speed is 120 cm/s,the stain can be completely removed,and the final material is about 3.17μm,which complies with the industry standard.After cleaning,the content of O and S on the surface of the specimen decreased,while the content of Al increased.The completion of the experiment is effectively and reasonably achieved the cleaning of the aluminum alloy surface.

关 键 词：激光应用 能量密度 扫描速度 

分 类 号：TN249[电子电信—物理电子学]