Influence of Lubricants Degradation Level over Tribological Properties

The paper presents the tribological aspects of the solid-fluid interaction, in order to develop an easy to use fast diagnoses method for the liquid lubricants, with minimal investments and a high precision level. The test program, using a TIMKEN equipment, analyzed the influence of the lubricant sta...

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Bibliographic Details
Published in:INCAS bulletin 2022, Vol.14 (1), p.125-136
Main Authors: RADULESCU, Alexandru Valentin, RADULESCU, Irina, PETRESCU, Florin
Format: Article
Language:English
Subjects:
Degradation
Friction
Geometry
lubricant
Lubricants
Lubricants & lubrication
Mechanical properties
Microscopy
Rheology
Spectrometry
Tribology
Viscosity
wear
Wear particles
Working hours
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Summary:The paper presents the tribological aspects of the solid-fluid interaction, in order to develop an easy to use fast diagnoses method for the liquid lubricants, with minimal investments and a high precision level. The test program, using a TIMKEN equipment, analyzed the influence of the lubricant state of degradation, considering the tribological behavior of the friction couple during the working time. Two different lubricants (15W-40 and H46-EPS/1) were tested, in both fresh and used state. Tests were performed using three values of the normal load and two sliding velocities. During the tests, the wear trace (width and depth) was measured. Finally, pictures of the damage area were obtained with NEOPHOT 21 metallographic microscope. Spectrometric analysis was performed to identify the geometry, shape and concentration of the wear particles for fresh and used lubricants. The main result of this research is an altenative method of evaluating and quantifying the wear degree and lubricants durability.
ISSN:2066-8201
2247-4528
DOI:10.13111/2066-8201.2022.14.1.11