Page 12 - 《摩擦学学报》2021年第1期

第 41 卷 第 1 期 摩 擦 学 学 报 Vol 41 No 1
2021 年 1 月 Tribology Jan, 2021

DOI: 10.16078/j.tribology.2020045

滑滚条件下定量润滑状态与润滑剂回填

效应试验观察

*
江 楠, 栗心明 , 杨 萍, 郭 峰
(青岛理工大学 机械与汽车工程学院，山东 青岛 266520)

摘 要: 采用球-盘点接触光干涉油膜与摩擦力测量装置观察了滑滚条件下接触区润滑状态与润滑剂回填效应. 结
果显示，在定量供油和恒定滑滚比下，不同供油量使接触区呈现出从边界润滑状态向弹流润滑状态的不同转化趋
势，非接触回填机制是其诱因；在恒定卷吸速度下，随着滑滚比从负值向正值变化，入口距离减小、乏油宽度增加，
接触区两表面润滑剂回填时间的差别是其主要原因；完全乏油条件下，接触回填机制对局部润滑油膜建立发挥明显
作用.
关键词: 滑滚比; 定量润滑; 乏油; 润滑剂回填; 润滑状态
中图分类号: TH117.22 文献标志码: A 文章编号: 1004-0595(2021)01–0009–08

Observation of Lubrication State and Lubricant Replenishment

under Sliding-Rolling Motions with Single-Charging Amount

*
JIANG Nan, LI Xinming , YANG Ping, GUO Feng
(School of Mechanical and Automotive Engineering, Qingdao University of Technology,
Shandong Qingdao 266520, China)
Abstract: Using a ball-on-disc film and friction measurement apparatus, the lubrication states, and lubricant
replenishment behaviors were experimentally observed under sliding-rolling conditions with single-charging amount.
The results showed that for a fixed sliding-rolling-ratio (SRR), the transitions of contacts from boundary lubrication to
elastohydrodynamic lubrication (EHL) were found, the trends of which were highly dependent on the lubricant charging
amount. The out-of-contact replenishment mechanism was responsible for the transitions. Given entrainment velocity,
the inlet distance decreased and starvation width broadened with variations of SRR from a negative value to a positive
value, which was attributed to the large differences of replenishment time. Under fully starvation states, the contact
replenishment mechanism played a significant role in the establishment of local EHL films.
Key words: sliding-rolling-ratio; single-charging lubrication; starvation; lubricant replenishment; lubrication states

入口区润滑剂特性(如黏度、黏压系数)、运动工况 下的诸多零部件，往往因入口区供油不足而处于乏油
(如速度、载荷)、接触副材料及几何外形，共同决定了 润滑状态下，即入口区供油量是润滑油膜建立另一关
[1]
弹性流体动力润滑(弹流润滑)的油膜厚度 . 但上述因 键因素. Wedeven等 首次用光干涉技术对乏油润滑
[4]
素与油膜厚度之间的关系建立在充分供油条件下. 事 进行了观察，以入口距离来量化入口供油状态，建立
[2]
实上，运行于高速 、高温等苛刻工况及脂润滑方式 [3] 了入口距离与润滑油膜减小之间的关系. 此后，乏油

Received 25 March 2020, revised 31 May 2020, accepted 24 June 2020, available online 28 January 2021.
*Corresponding author. E-mail: mexinmingli@163.com, Tel: +86-18660261702.
The project was supported by the National Natural Science Foundation of China (51875299，51775286) and the Natural science
foundation of Shandong province (ZR2019MEE044).
国家自然科学基金面上项目(51875299, 51775286)和山东省自然科学基金面上项目(ZR2019MEE044)资助.