Influence of PolytronTMC Composition on the Tribological State of the System of materials “40Ch-Transmission Oil-HCh15” when Simulating Friction Modes and Lubrication Conditions
Kubich V.I. Cherneta O.G. Yurov V.M. Portnov V.S. Amangeldikyzy A. Kopobayeva A.N. Madisheva R.K. Askarova N.S.
2024Abylkas Saginov Karaganda Technical University
Material and Mechanical Engineering Technology
2024#2024Issue 28 - 17 pp.
In this work, definitive tribological tests were carried out on the material system “40Ch-gear oil-HCh15” to assess the nature of the action of the additional composition POLYTRONMTC for its adaptability to high-speed, power loading conditions and the ability to form reliable lubricating formations in conditions of insufficient lubrication. Physical modeling of the manifestation of friction in the upper boundary of boundary lubrication with a friction coefficient of 0.12 ≤ μg≤ 0.2, as well as semi-dry and dry friction was performed. It was established that high contact pressures in the range from 4.2 MPa to 8.6 MPa at the beginning of running-in created features of resistance to the flow of oil components into the zones of the contour areas of friction interaction, which determined to a greater extent mechanical metal connections when sliding with a sufficiently high coefficient of friction μс = 0.3-0.7. In this case, the conditional point contact at sliding speeds determined the number of oil molecules that were directed to the diffuser contact zone, i.e. behind the ball along the friction path on the surface of the rotating disk. A fundamental difference in the manifestation of POLYTRONMTС was revealed when it is added to Opet Fullgear FRM 75W-80, CastrolSyntraxUniversal 80W-90 oils, which have a synthetic base, and Castrol ATF MultiVehicle 75W-80 oil, which has a mineral base. Graphic patterns of changes in friction and wear characteristics have been constructed for the model conjugation “moving disk-fixed ball”.
ball , disk , dynamic coefficient of friction , lubricant formations , pressure , temperature , test time , transmission oil
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National University “Zaporozhye Polytechnic”, Zaporozhye, Ukraine
Dnieper State Technical University, Kamenskoye, Ukraine
Vostok LLP, Karaganda, Kazakhstan
Abylkas Saginov Karaganda Technical University, Karaganda, Kazakhstan
National University “Zaporozhye Polytechnic”
Dnieper State Technical University
Vostok LLP
Abylkas Saginov Karaganda Technical University
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