INCREASED WEAR RESISTANCE OF PARTS HEAVY-LOADED FRICTION ASSEMBLY OF VEHICLES
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Abstract
The paper shows that in order to increase the service life of parts of heavily loaded friction units of cars, it is recommended to use complex lubricants: lithium grease using a structuring and pre-processing additive in the form of a package of nanoscale diamonds and calcium sulfate with fluoroplast additives and a viscous additive. The tests are modeled on the basis of the operating conditions of the axle – bushing balancer friction pairs operated with contact pressure 1.5–6.0 MPa. It is established that for the bronze–steel friction pair under conditions of boundary friction at the specified contact pressure, the maximum wear resistance of the samples at the stages of run-in and established friction is achieved by using a complex calcium sulfate grease with fluoroplast additives and a viscous additive. The use of a complex lithium lubricant with nanoscale diamonds reduces the run-in period in all these modes and is effective at a specific load not exceeding 3 MPa.
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References
Leontʹyev, L.B., Leontʹyev, A.L. & Makarov, V.N. (2014). Sistemnyy analiz tekhnologii formirovaniya iznosostoykikh pokrytiy na poverkhnostyakh treniya detaley [System analysis of technology for the formation of wear-resistant coatings on friction surfaces of parts]. Fundamentalʹnyye issledovaniya [Fundamental research], (12, part 4), 729–734. (In Russ., abstr. in Engl.).
Vityazʹ, P.A., Zhornik, V.I., Kukareko, V.A., Komarov, A.I. & Senyutʹ, V.T. (2011). Modifitsirovaniye materialov pokrytiy nanorazmernymi almazosoderzhashchimi dobavkami [Modification of coating materials with nanosized diamond-containing additives]. Minsk: Minsk: Bielaruskaja Navuka. (In Russ.).
Vityazʹ, P.A., Ilʹyushchenko, A.F. & Zhornik, V.I. (2013). Nanoalmazy detonatsionnogo sinteza: polucheniye i primeneniye [Nanodiamonds of detonation synthesis: production and application]. In Р.А. Vityazʹ (Eds.). Minsk: Minsk: Bielaruskaja Navuka. (In Russ.).
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