%A JI Jing-Hu, FU Yong-Hong, WANG Zu-Quan, HUA Xi-Jun, FU Hao %T Tribological property of mechanical seal with laser޲induced  multi޲scale surface texturing %0 Journal Article %D 2012 %J Journal of Drainage and Irrigation Machinery Engin %R 10.3969/j.issn.1674-8530.2012.04.015 %P 452-456 %V 30 %N 4 %U {http://zzs.ujs.edu.cn/pgjx/CN/abstract/article_427.shtml} %8 2012-07-30 %X 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.