The research of oil properties after durability tests of porous bearings

• Autorzy: Król A. , Giemza B. , Kałdoński T.
• Języki publikacji: EN

Abstrakty

EN

Self-lubricating bearings are characterized by sileni-running work, long durability, and high load-carrying capacity at small sliding velocities. Durability of porous sliding bearings is one of the most important parameter determiningfuture implementation. However, during operation loss of self-lubricating capability of the bearing can be caused by aging process of lubricant, what could lead also to decreasing of the durability. Oil aging process could be much deeper than in conventional sliding bearings with solid bushes, because of temperature, catalyst metal - porous stutcture and oxygen accelerating oxidation of oil. It was preliminary confirmed in the previous research that after durability tests of porous bearings high values of total acid number (TAN) of oils samples were achieved. Infrareds (IR) spectrums were also deeply changed. Thus the same investigation was performed for two other different oils (mineral gear oil and perfluorinatedpolyether - PFPE). After the durability test oil samples were unsaturated from the bearings and IR spectrums and TAN were examined. As it appeared change of mineral gear oil properties were not very deep. On the other hand synthetic PFPE oil had high TAN values and significant differences in the IR spectrums were observed.

Słowa kluczowe

EN

porous bearings; mineral oil; synthetic PFPE oil; aging process

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2009
• Tom: Vol. 16, No. 1
• Strony: 289--295
• Opis fizyczny: Bibliogr. 6 poz., rys.

Twórcy

autor

Król A.

autor

Giemza B.

autor

Kałdoński T.

• Military University of Technology, Faculty of Mechanical Engineering Institute of Motor Vehicles and Transportation Gen. Kaliskiego 2, 75-620 Warsaw, Poland tel[phone], fax: [phone],

Bibliografia

• [1] Zozulia, V. D., Lubricants for the porous self-lubricating bearings, Technics Kiev 1976 (in Russian), 1979.
• [2] Krzemiński, K., Application and selection of the porous self-lubricating bearings, Mechanical Review, No. 5-6, pp. 5-7, (in Polish) Warsaw, 1981.
• [3] Glezl, S., Supplementary influences on the load capacity of the sintered bearings, Problems of Friction, Wear and Lubrication. No. 10, Warsaw. 1971.
• [4] Lawrowski, Z., The principles of materials selection for the self-lubricating sliding bearings, Tribology, No. 5–6, pp. 734–743, (in Polish), Radom 1997.
• [5] Olexa, J., Investigation of the relations between the permeability and the service life of porous self-lubricated bearings, Wear, No. 58, pp. 1-14, 1980.
• [6] Giemza, B., Kałdoński, T., Król, A., Problem of the Service Life of Self-lubricated Friction Couples, Solid State Phenomena, 113, pp. 399-404, 2006.