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当前位置: 首页 > 文章 > 激光表面跨尺度织构化机械密封摩擦性能 排灌机械工程学报 2012,30 (4) 86-90
Position: Home > Articles > Tribological property of mechanical seal with laser-induced multi-scale surface texturing Journal of Drainage and Irrigation Machinery Engineering 2012,30 (4) 86-90

激光表面跨尺度织构化机械密封摩擦性能

作  者：
纪敬虎;符永宏;王祖权;华希俊;符昊
单  位：
江苏大学机械工程学院
关键词：
机械密封;激光表面织构;跨尺度;摩擦性能;碳化硅
摘  要：
采用声光调Q的半导体泵浦Nd:YAG激光器,利用"单脉冲同点间隔多次"激光加工工艺在碳化硅机械密封环端面进行跨尺度织构化处理,制备微凹坑织构和宏观上游泵送槽织构,用表面形貌三维测量仪测量激光加工后的试样.在机械密封计算机辅助试验台上,进行了激光表面跨尺度织构机械密封与无织构机械密封的摩擦性能对比试验,研究了跨尺度表面织构在不同的密封介质压力和转速等工况下对机械密封摩擦转矩的影响.结果表明:激光表面织构化技术能在密封环表面进行微凹坑型及微凹槽型织构的跨尺度加工.在试验的工况参数范围内,无论是在低压低速,还是在高压高速工况下,激光表面跨尺度织构均可以显著地改善机械密封的摩擦性能.与无织构机械密封相比,激光表面跨尺度织构机械密封的摩擦转矩最大可减小65%,并且运转相对较为稳定,受密封介质压力和转速的影响相对较小,这是由于所制备的跨尺度表面织构起到了改善密封端面间润滑状况的作用.
译  名：
Tribological property of mechanical seal with laser-induced multi-scale surface texturing
作  者：
Ji Jinghu,Fu Yonghong,Wang Zuquan,Hua Xijun,Fu Hao(School of Mechanical Engineering,Jiangsu University,Zhenjiang,Jiangsu 212013,China)
关键词：
mechanical seal;laser surface texturing;crossing dimension;tribological property;SiC
摘  要：
The multi-scale surface textures of micro-dimples and macro-grooves were produced with a Q switched light-pumped Nd: YAG laser using the laser processing technique called single pulse at a time,repeated at intervals.The morphology of the laser textured sample was measured with a 3D profiler.The tribological property of the mechanical seal with laser-induced multi-scale surface textures was investigated under different sealing pressures and rotational speeds on a computer-aided mechanical seals experimental device and compared with that without textures.The results showed that the regular micro-dimple and macro-groove textures can be produced on the surfaces of mechanical seal by laser.The tribilogical property of mechanical seal can be improved significantly by the laser-induced multi-scale surface textures under the low pressure,low speed and high pressure,high speed conditions du-ring the experiments.The textured mechanical seals exhibited a lower and stable friction torque compared with one without textures.The friction torque of the textured mechanical seal can be decreased by 65% at most.The reason for this is the surfaces textured significantly improve the lubrication condition of a mechanical seal,and the friction torque is decreased eventually.

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