流体机械

2011, v.39;No.467(05) 10-12+9

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磨合阶段的机械密封端面形貌特征研究
Characteristic of Surface Topography of Mechanical Seal During Running-in

徐静;涂桥安;孙见君;陶丹萍;刘士国;
XU Jing,TU Qiao-an,SUN Jian-jun,TAO Dan-ping,LIU Shi-guo (Nanjing Forestry University,Nanjing 210037,China)

摘要(Abstract):

表面粗糙度对机械密封性能有着显著影响。利用MMU-2摩擦磨损试验机和表面轮廓仪,对3个不同粗糙程度的密封端面进行了摩擦磨损试验。引入特征粗糙度,研究了3个不同粗糙程度的密封端面在摩擦磨损过程中的特征粗糙度变化规律,并与表面的轮廓算术平均偏差粗糙度变化规律进行了比较。研究表明,不同初始粗糙程度的端面在跑合过程结束后,粗糙度趋于一致。这一结果为利用特征粗糙度正确设计机械密封端面,合理选择端面加工方法提供了依据。
The performance of mechanical seals was influenced significantly by surface roughness.On the MMU-2 friction and wear test machine and the LI-3 type stylus profilometer,three stationary rings with different surface roughness were tested.The law of characteristic roughness change of seal faces with different primary surface roughness was studied during the running-in,and was compared with the law of profile arithmetic average deviation roughness change of surface.The research results show that the roughness of the surface changes from different to consistent.The results provide a basis for the exact designing seal-face roughness of mechanical seals and the reasonable selecting manufacturing method of seal faces by characteristic roughness.

关键词(KeyWords): 机械密封;分形;轮廓算术平均偏差粗糙度;特征粗糙度
mechanical seal;fractal;profile arithmetic average deviation roughness;characteristic roughness

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作者(Authors): 徐静;涂桥安;孙见君;陶丹萍;刘士国;
XU Jing,TU Qiao-an,SUN Jian-jun,TAO Dan-ping,LIU Shi-guo (Nanjing Forestry University,Nanjing 210037,China)

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