BADANIA ZUŻYCIA SŁUPKÓW W KORONKACH WIERTNICZYCH DO WIERCENIA OTWORÓW STRZAŁOWYCH

W artykule przedstawiono rezultaty badań zużycia słupków w wybranych typach koronek wiertniczych o średnicy 95 mm stosowanych do wierceń otworów strzałowych w górnictwie skalnym. Celem badań było ustalenie rodzaju zużyci...

THE EFFECT OF HELICAL GROOVE PRESENCE ON THE TRIBOLOGICAL PERFORMANCE OF JOURNAL BEARINGS

The hydrodynamic bearings could suffer critical damages operating in contaminated environments that cause machine breakdown. In such hard operating conditions, hydrodynamic bearings with grooved journals are less sensiti...

Analysis of phenomena in real contact spots due to dynamic force under tangential micromotion

INFLUENCE OF THE TYPE OF FILLER IN GREASE– –THICKENER COMPOSITION ON LUBRICATION EFFICIENCY

These investigations concern the influence of the type of filler in grease modified with solid oils on lubrication efficiency in steel sliding nodes working in mixed lubrication. Based on preliminary works, two commercia...

THE INFLUENCE OF ISOTHERMAL OXIDATION PARAMETERS ON THE TRIBOLOGICAL PROPERTIES OF TITANIUM

The paper presents the results of tests concerning the tribological properties of titanium Grade 2 subjected to thermal oxidation at a temperature of 600°C and 700°C for 72 hours. Morphology of the obtained oxide scale w...