乏油对反向滑动条件下45号钢磨损性能的影响  

Wear Behavior of 45 Steel under Oil Starved in the Opposite-Sliding Condition

作　　者：韩一鸣 孟祥华[1] 王静[1] 

机构地区：[1]青岛理工大学机械工程学院,山东青岛266520

出　　处：《润滑与密封》2018年第1期67-75,共9页Lubrication Engineering

基　　金：国家自然科学基金项目(51275253)

摘　　要：使用光干涉技术,在球盘点接触试验台上,在零卷吸速度条件下,观察不同乏油程度下,接触区凹陷的变化情况;通过球-盘磨损试验机,研究反向滑动工况下45#钢在干接触和不同乏油程度条件下的表面损伤行为以及时间、速度和载荷对磨损的影响。结果表明:零卷吸速度条件下,乏油会导致"温度-黏度楔"作用的减弱,以及油膜凹陷的消失,因此会增加金属表面接触和磨损的发生;在反向滑动工况下,金属表面的损伤随乏油程度的增加而加剧,干接触对钢盘和钢球表面造成的磨损最为严重;在乏油工况时,工作时间、表面相对速度以及载荷的增大都会加剧磨损,磨损机制主要表现为疲劳磨损和黏着磨损。The optical interference technology was used to observe the changes of the surface dimple under zero entrain- ment velocity condition and different starvation.A ball＇disk wear testing machine was used to study the damage behaviors of 45 steel in the opposite-sliding condition and the effect of working time, surface velocity and load on the wear of 45 steel. The results show that under zero entrainment velocity condition, the oil starvation will lead to the disappearance of the oil film dimple ,which will increase the contact and wear of the metal surface. In the opposite-sliding condition, the contact condition is aggravated with the increase of the oil starvation, and the wear in dry contact is the severest for the same work- ing time.The increase of working time, load and surface velocity will aggravate the wear. The main wear mechanism is fatigue wear and adhesive wear.

关 键 词：反向滑动磨损 乏油 疲劳磨损 

分 类 号：TH117.1[机械工程—机械设计及理论]