THE EFFECT OF FILLER CONCENTRATION IN GREASE ON THE EFFICIENCY OF THE LUBRICATION OF STEEL SLIDING PAIRS WORKING IN MIXED LUBRICATION
Journal Title: Tribologia - Year 2012, Vol 244, Issue 4
Abstract
The paper presents the results of preliminary studies into the effect of different fillers (Bi2O3, Sb2O3, CuO, ZnO, TiO2) in calcium grease (Machine Grease 2) on the efficiency of the lubrication of steel sliding pairs. Tribological tests were carried out using a four-ball tester. Grease mixtures containing 4% and 10% by wt. of one of the fillers were tested. For purposes of comparison, the tribological characteristics of Machine 2 grease without any filler were determined. The efficiency of the greases was evaluated according to two criteria: limit seizure load Foz and limit seizure pressure poz. The experimental results were statistically processed at a confidence level of 95% using Student’s t-test. Titanium dioxide, zinc oxide, and bismuth trioxide were found to be poorly effective fillers of Machine Grease 2. Moreover, it was found that a change in the concentration of copper oxide or antimony trioxide from 4% to 10% results in an increase in lubrication efficiency.
Authors and Affiliations
Michał Krawiec, Władysław Czupryk
Keywords
Related Articles
- EP ID EP270457
- DOI -
- Views 37
- Downloads 0
RESEARCH OF ANTIWEAR AND ANTISEIZURE PROPERTIES OF THE GREASES USED IN ROLLING BEARINGS
Rolling bearings exist practically in all machines where elements are interacting. They often determine the machine’s reliability, and the essential role (quite often unappreciated) is played by lubricant. The lubricant...
Badanie zmian lepkości cieczy ferromagnetycznych poddanych działaniu stałego pola magnetycznego
W pracy przestawiono wyniki badań lepkości wybranych cieczy ferromagnetycznych poddanych działaniu stałego pola magnetycznego przy różnych wartościach strumienia indukcji magnetycznej. W badaniach uwzględniono wpływ szyb...
THE INFLUENCE OF LASER HEAD SPEED IN THE PROCESS OF LASER HARDENING ON THE TRIBOLOGICAL PROPERTIES OF SURFACE LAYERS
The paper presents the results of research on the tribological properties of steel 16MnCr5 after laser hardening. The quality of the hardened surface was influenced by laser head speed. The study was conducted on frictio...
THE EFFECT OF FRICTION ON THE EFFICIENCY OF SEWING MACHINES IN THE SHOE INDUSTRY
This paper contains a description of tests and results obtained from the tribological system of a sewing machine with a traditional power transmission system compared with a power transmission system with an additionaly...
WŁAŚCIWOŚCI TRIBOLOGICZNE STALI ŁOŻYSKOWEJ PO OBRÓBCE HYBRYDOWEJ, ŁĄCZĄCEJ DYFUZYJNE CHROMOWANIE Z METODĄ PVD
Przedmiot badań w niniejszej pracy stanowiła modyfikacja budowy warstw chromowanych na stali łożyskowej przez połączenie chromowania dyfuzyjnego z następną obróbką, osadzaniem azotku chromu metodą PVD, przeprowadzana dla...