ASSESSMENT AND ANALYSIS OF IMPREGNATED TRIBOLOGICAL SYSTEMS WORKING AT ELEVATED TEMPERATURES
Journal Title: Tribologia - Year 2014, Vol 256, Issue 4
Abstract
With emphasis on the reduction of frictional resistance and tribological wear of machine component parts, it becomes more and more important, in order to improve their efficiency, durability and reliability. Friction causes mostly negative effects, because the immediate consequence is tribological wear, leading to a gradual loss of reliability. This paper presents the results of tribological friction pairs working at temperatures of 300 and 500°C. The objects of the study were bearing sleeves with a density of 6.7 g/cm3 that had previously undergone a process of pressure impregnation by submicrometer MoS2 and WS2 solid lubricant particles. Friction and wear tests were conducted with the use of a ring-on-shaft TWT-500N testing machine. Analysis of the obtained results led to the conclusion that the application of MoS2 at 300°C and WS2 at 500°C reduces friction coefficient, respectively, to less than 0.08 and 0.05.
Authors and Affiliations
Joanna SULEJ-CHOJNACKA, Volf LESHCHYNSKY, Marcin LIJEWSKI, Stanisław ZIÓŁKIEWICZ
Keywords
Related Articles
- EP ID EP262719
- DOI -
- Views 49
- Downloads 0
FRICTION TORQUE IN ROLLING BEARINGS – METHODS AND TEST FACILITIES
The paper presents theoretical and empirical equations to calculate friction torque of a rolling bearing and the results of an estimate of torque coming from these equations. It describes the evaluation of torque testers...
AN EXAMINATION OF THE CONDITION OF WORKING SURFACES OF CRANKSHAFT CRANKPINS AND JOURNALS BASED ON THE MATERIAL FRACTION CURVES
The paper focuses on the significance of the microgeometry of the working surfaces of crankpins and the main bearing journals on the durability and reliability of farm tractor engines. Alternative surface roughness param...
WEAR OF Si OR B DOPED AMORPHOUS CARBON COATINGS
The paper describes a complex wear research on DLC (amorphous carbon) doped with boron (B) and silicone (Si). The tests were carried out in two different sliding systems: flat–on–flat (ring contact, unidirectional slidin...
WYZWANIA I METODY W ANALIZACH PRZEPŁYWU CIEPŁA W BEZSMAROWYCH ŁOŻYSKACH POLIMEROWYCH
Generacja ciepła i jego rozprowadzenie stanowi ważny element przy projektowaniu i użytkowaniu suchych łożysk polimerowych, ponieważ wysoka temperatura może prowadzić do szybszego zużycia materiału i uszkodzenia łożyska....
PROPERTIES OF PLASMA AND HVOF SPRAYED COATINGS
Nowadays plasma spraying and supersonic spraying processes are widely applied in many branches of industry. This paper presents current achievements in this area and the results of investigations of plasma and supersonic...