Problem of the Service Life of Self-Lubricated Friction Couples

Abstract:

In the article one investigation’s results regarding the influence of work parameters of the porous bearings on the process of oil ageing is presented. Firstly stand tests were performed for the porous bearings sintered of iron powder Höganas (Sweden) and impregnated by protection oils, often used by porous bearings manufactures. Stand tests were performed until the seizure of the bearing was achieved – loss of self-lubricating capability. Then oil was extracted from all bearings and the degree of oil ageing was observed by two methods: investigation of IR spectrums and total acid number. After that all results were compared with those achieved for fresh oils.

• Periodical: Solid State Phenomena (Volume 113)
• Pages: 399-404
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.113.399
• Online since: June 2006
• Authors: Bolesław Giemza, Artur Król, Tadeusz Kałdoński
• Keywords: Lubricity, Oil, Permeability, Porosity, Porous Bearings, Selection, Self-Lubrication

References

[1] V. D. Zozulia: Lubricants for self-lubricated bearings (Kiev, Scientific Council, 1976) (in Russian).

[2] Z. Lawrowski: The self-lubricating mechanism of bearings with porous sleeves basing on the steel porous structures (Mechanical Review, No 22, 1962), pp.691-696 (in Polish).

[3] J. Olexa: Investigation of the relations between the permeability and the service life of porous self-lubricated bearings (Wear, No 58, 1980), pp.1-14.

DOI: 10.1016/0043-1648(80)90209-4

[4] A. Król, T. Kałdoński: Permeability of porous sliding bearings (Proceedings of Second International Tribology Conference, SITC 2002, Zielona Góra, August 25-28, International Journal of Applied Mechanics, Special issue: SITC 2002, Vol. 7, 2002), pp.255-262.

[5] K. Krzemiński: Application and selection of self-lubricating porous bearings (Mechanical Review, No 5-6, 1981), pp.5-7 (in Polish).

[6] Z. Lawrowski: Development tendencies of non-service sliding bearings (Tribology, No 4, 1999), pp.521-533 (in Polish).

[7] Z. Lawrowski: The base of material selection for non-service sliding bearings (Tribology, No 5-6, 1997), pp.734-743 (in Polish).

[8] A. Król, T. Kałdoński: Research of ageing process of oils used in porous bearings (Bulletin of Military University of Technology, Vol. LII, No 8-9, 2003), pp.161-180.

[9] A. Król, T. Kałdoński: Selection of oils to porous sliding bearings (Conference Proceedings and Monographs. Tribology: Science and Applications, Vienna 2004, Vol. 4, 2004), pp.325-347.

[10] T. Kałdoński: Complexity of self-lubricating mechanism of porous bearing - two models (Tribology, No 5-6, 1997), pp.653-657 (in Polish).

[11] A. Król, T. Kałdoński: Ageing process preliminary investigations of oils to porous bearings (Conference Proceedings VIII International Symposium of Institute of Motor Vehicles, Military University of Technology, Rynia December 11-13, Part II, 2002), pp.149-158.

[12] PN-C-04011 Petroleum products. Determination of kinematic viscosity and evaluation of dynamic viscosity.

[13] PN-C-04004 Crude petroleum and petroleum products. Determination of density.

[14] PN-C-04015 Petroleum products. Evaluation of viscosity index of oils.

[15] ASTM D 2896 Determination the acid number in petroleum products.

[16] PN-C- 04147 Petroleum products. Test for lubricating properties of oils and greases.