激光加工多孔端面机械密封的摩擦性能分析  

Analysis on Friction Performance of Mechanical Seals with a Laser-Textured Face

作　　者：于新奇[1] 王振辉[1] 高慧琴[1] 崔海亭[1] 

机构地区：[1]河北科技大学机械电子工程学院,河北石家庄050054

出　　处：《润滑与密封》2007年第7期90-93,共4页Lubrication Engineering

基　　金：河北省教育厅资助项目(2006419);河北科技大学基金项目(XL2005030);河北科技大学杰出青年基金资助项目.

摘　　要：分析了工况参数和结构参数对激光加工多孔端面机械密封摩擦性能的影响。建立了激光加工多孔端面机械密封的计算模型和边界条件,采用有限差分法求解液膜控制方程,获得在不同操作工况和表面微孔结构参数下的密封开启力。理论推导得到了激光加工多孔端面机械密封的摩擦扭矩表达式,并对其进行了分析。结果表明,密封端面间的摩擦扭矩随着密封环转速的增加而增大;微孔深度和微孔密度有最佳参数,使密封端面间的摩擦扭矩最小,且与试验结果吻合。Effects of operation conditions and micro-pore geometry parameters on friction performance of mechanical seals with a laser-textured porous face were analyzed. A calculation model and boundary conditions were developed for mechanical seals with a laser-textured micro-pore face. Seal opening forces at various operation conditions and micro-pore geometry parameters were obtained from the solution of the liquid film control equation by finite difference method. A derivative expression of friction torque of mechanical seals with a laser-textured porous face was calculated and contributing factors of friction torque were analyzed. It is shown that fiction torque increases with the increase of rotation rate. An optimum pore size for pore depth and pore density was found that corresponds to minimum friction torque and it is consistent with experimental result.

关 键 词：机械密封 激光加工 微孔 摩擦性能 

分 类 号：TH136[机械工程—机械制造及自动化]