LUBRICATION MECHANISM OF SOLID LUBRICANTS PARTICLES ADDED INTO LUBRICATING PILS

润滑丸中添加固体润滑剂颗粒的润滑机理

基本信息

批准号：
08650175
负责人：
IZUMI Naoshi
金额：
$ 1.47万
依托单位：
KYUSHU UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1996
资助国家：
日本
起止时间：
1996 至 1997
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08650175/
关键词：
SOLID LUBRICANT SCORING ROLLING CONTACT FATIGUE FALSE BRINELLING FRETTING ROLLING BEARING 転がり滑り接触

项目摘要

Scoring proof capability and fretting proof capability of lubricating oils or grease containing solid lubricantsparticles have been investigated by roliing-sliding contact of two rollers and rolling bearings in oscillatory motion. As a reference of fretting proof capability, the effect of operatlng condition such as racial load, oscillationangle and frequency on fretting llfe of osciallatory bearing was studied. And a new test methcd to evaluate antipittinvg performance of lubricating oiis in rolling-sllding contact. th findings are as foll0ws :1.Scoring proof capability of lubricating oils containing particles of molybdenum disulfide, graptdte, carbonfluoride or boron nitride were investigated. (1) Carbon fiuoride and boron nitride added together with a dispers-ant have good scoring proof capability and decrease the coefficient of friction. (2) Addition of molybdenum disfilnde or graphite neither improved scoring proof cability nor modified the frictional characteristics.2.Because the effect of surface roughness of test rollers has decisive effect on pitting life, a new test method in wich the harder roller is not replaced for test oils to be evaluated was phned and proved effective by experiments.3.As for the quite heavy wear in rolling bearings in oscillatory motion due to fretting, which is called as false brinelling, the fretting life was defined with the oscillation number until the relative displacement of the innerring to the outer ring due to wear reached to a threshold. (1) In the case of grease lubrication, as temperature rises, the state of oil-film formation (measured by the electric reslstancc methcd) becomes beetter and the fretting llfe increases. (2) the effect of the oscillation angle and frequency on fretting life can be correlated with thestate of oil-filn formation. (3) A grease containing molydenum disulfide exhibited the pcxssibillty of frettingproof capabillty in the condition in which oil-fiim did not formed.

通过两个滚子和滚动轴承在振荡运动中的滚动-滑动接触，研究了含有固体润滑剂颗粒的润滑油或润滑脂的防划伤能力和防微动磨损能力。作为抗微动性能的参考，研究了运动载荷、摆动角度和频率等工作条件对振动轴承微动寿命的影响。以及评价滚动滑动接触润滑油抗点蚀性能的新测试方法。研究结果如下： 1.研究了含有二硫化钼、石墨、氟化碳或氮化硼颗粒的润滑油的防划伤能力。 (1)氟化碳、氮化硼与分散剂一起添加，具有良好的防划伤能力，并降低摩擦系数。 (2)添加钼或石墨既不提高耐划伤能力，也不改变摩擦特性。2.由于试验辊表面粗糙度的影响对点蚀寿命有决定性影响，不更换较硬辊的新试验方法3、对于滚动轴承在振荡运动中由于微动而产生的相当严重的磨损，即所谓的假布氏压痕，微动寿命定义为直到内圈与外圈由于磨损而产生的相对位移达到阈值为止的振荡次数。 (1) 在脂润滑的情况下，随着温度升高，油膜形成状态（通过电阻法测量）变得更好，微动寿命增加。 (2)振荡角度和频率对微动寿命的影响可以与油膜形成状态相关。 (3)含有二硫化钼的润滑脂在不形成油膜的条件下表现出耐微动磨损性能。