杂质颗粒对油水两相润滑轧机油膜轴承弹流润滑的影响  

The Effect of Rust Particles Under Water Contamination Elastohydrodynamic Lubrication of Rolling Mill Oil Film Bearing

作　　者：王涛[1] 王优强[1] 王建[1] 范晓梦 

机构地区：[1]青岛理工大学机械工程学院,山东青岛266520

出　　处：《机械设计与制造》2017年第12期40-44,共5页Machinery Design & Manufacture

基　　金：国家自然科学基金(51175275);国家自然科学基金(51575289)

摘　　要：以轧机油膜轴承为研究对象,建立了油水两相流的弹流润滑模型,分析了润滑液中杂质颗粒对轧机油膜轴承润滑性能的影响。结果表明:存在杂质颗粒时,杂质颗粒接触区压力增大,入口区压力及最大压力变化不大,膜厚减小;随着杂质颗粒半径的增大,入口区压力增大,颗粒接触区压力增大,最大压力减小,膜厚减小;随着杂质颗粒浓度的增加,入口区压力减小,杂质颗粒接触区压力增大,最大压力增大,膜厚减小;随着杂质颗粒流速的增加,入口区压力及最大压力变化不大,而颗粒接触区域压力增大,膜厚减小;随着油水两相流体中含水量的增加,入口区压力减小,最大压力增大,杂质颗粒接触区压力增大,膜厚增大。The rolling mill oil film bearing as the research object in this paper is established oil-water two-phase flow of elastohydrodynamic lubrication model to analyze the effect of rust particles within lubrication elastohydrodynamic lubrication （EHL） of roUing mill oil film bearing The results show that rust particles contacting zone pressure is increased, the inlet zone pressure and the maximum pressure are changed little and the film thickness is decreased with presence of rust particles. With the increasing of rust particles size, the inlet zone pressure and particle contact zone pressure is increased, the maximum pressure and the film thickness is decreased, With the increasing of rust particles concentration, rust particles contacting zone pressure and the maximum pressure is increased, the inlet zone pressure and the film thickness is decreased. With the increasing of rust particles velocity, the inlet zone pressure and the maximum pressure is changed little, while the particle contact area pressure is increased and the film thickness is decreased With the increasing of water content in the oil-water two-phase fluid, the inlet zone pressure is decreased, the maximum pressure , rust particle contact zone pressure and the film thickness is increased.

关 键 词：杂质颗粒 油水两相流 轧机油膜轴承 弹流润滑 

分 类 号：TH16[机械工程—机械制造及自动化]