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Tribosynthesis of friction films and their influence on the functional properties of copper-based antifriction composites for printing machines

Olaleye Kayode, Roik Tetiana, Kurzawa Adam, Gavrysh Oleg, Pyka Dariusz, Bocian Mirosław, Jamroziak Krzysztof

Materials Science Poland

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2022

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Vol. 40, No. 4

147--157

EN

This article is devoted to research of the tribosynthesis mechanism of antifriction films and their influence on the functional properties of antifriction composites based on copper alloyed with nickel and molybdenum with the CaF2 solid lubricant additions for operation at rotation speeds of 3,000–7,000 rph and increased loads of 3.0–5.0 MPa in air. Studies have shown that antifriction films are complex, dynamically changing formations on the surfaces of the composite and counterface, developing according to the bifurcation mechanism. The antifriction layer is decisive in the formation of the friction pair's tribological high-level properties, which provide the self-lubrication mode of the friction unit. The formation and permanent presence of the anti-seize film is associated with a balanced wear rate of the film and its constant formation again on these worn areas at rotation speeds of up to 7,000 rph and loads of up to 5.0 MPa. Due to the steady self-lubrication mechanism, the copper-based composite has significant advantages over cast bronze CuSn5ZnPb, which can only work with liquid lubrication in the friction units of printing machines. The performed studies make it possible to choose rational modes for operation of new high-speed antifriction Cu-composites based on the friction films analysis, predicting their high functional properties.

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Integration of Technological Cycles of Industrial Waste Processing

Khudoyarova Olga, Ranskiy Anatoliy, Korinenko Bohdan, Gordienko Olga, Sydoruk Tetiana, Didenko Natalia, Kryklyvyi Rostyslav

Journal of Ecological Engineering

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2021

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Vol. 22, nr 6

209--213

EN

Within the framework of the concept of "green chemistry" and cyclic economy (economy of closed technological cycles) the extraction of chemical pollutants Cu2+, S2–, HS––ions from wastewater of various industrial productions was investigated. The research was integrated into a single technological cycle of obtaining new carbon-sulfurcontaining lubricants for special purposes. The loading and antifriction properties of the developed plastic lubricants were investigated. It was established that the antifriction properties (ffr) of the developed plastic lubricants are 1.25–1.45 times higher those of the Konstantin-1 industrial lubricant Konstantin-1 and can be used in the work of friction units of various machines and mechanisms. The tribotechnical results of the developed plastic oils in the "steel-aluminum" friction pair are justified, first of all, by the presence, of technical graphite brand LG-1 plastic oils, its modified forms of "pseudographite" and pyrocarbon, as well as sulfur-containing components CuSx and thiobenzaniline (TBA) in the composition.

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Wpływ siarkowanych olejów roślinnych na właściwości smarne oleju rzepakowego

Rogoś E., Urbański A.

Tribologia

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2005

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nr 6

103-112

PL

Zbadano i porównano właściwości przeciwzużyciowe i przeciwzatarciowe modyfikowanych siarką olejów roślinnych o różnej strukturze chemicznej. Oceniono efektywność ich działania jako dodatków smarnych w oleju rzepakowym. Właściwości przeciwzużyciowe i przeciwzatarciowe siarkowanych olejów i ich kompozycji z olejem rzepakowym oceniono za pomocą aparatu czterokulowego dla skojarzenia stal-stal. Stwierdzono zróżnicowany wpływ siarki na działanie przeciwzużyciowe i bardzo korzystny na działanie przeciwzatarciowe olejów roślinnych. Wykazano, że najkorzystniejszym dodatkiem smarnym jat siarkowany olej słonecznikowy.

EN

Antiwear and antifriction properties of, modified by sulphur, plant oils with different chemical structure were examined. Their effectiveness as lubricating additives in rape oil was assessed. Antiwear and antifriction properties of sulphured oils and their composition with rape oil were assessed by means of Four-Ball-Machine for the steel-steel contact. Diversified impact of sulphur on antiwear effect and very favourable impact on antifriction effect of plant oils was identified. It was proved that the most favourable lubricating additive is sulphured sunflower oil.

4

Tribological properties of polybutoxyglycols dithiophosphates

Mizerski M., Celichowski G.

Tribologia

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2003

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nr 1

81--91

PL

Roztwory pochodnych ditiofosforanów polibutoksyglikoli w oleju mineralnym badano pod kątem ich właściwości tarciowych. Badania tarciowe przeprowadzone na aparatach typu kula-tarcza i aparacie czterokulowym wykazały, iż dodatki te charakteryzują się dobrymi właściwościami przeciwzużyciowymi i przeciwzatarciowymi. Stopień zmian tych własności zależy od stężenia dodatku w oleju mineralnym, szybkości poślizgu i przykładanych obciążeń do węzła tarcia. Obecność grup butoksy - obniża zawartość fosforu w cząsteczce dodatku, jeśli porównamy ją do cząsteczek stosowanych ditiofosforanów cynku.

EN

Polybutoxy- glycol dithiophosphate acid derivatives were found to be effective load carrying additives in mineral base oil. Four ball and ball-on-disk data of some of these additives have shown good AW/EP and antifrictional properties. These properties were dependent upon concentration of additive, sliding speed and load. The presence of polybutoxygroups decrease concentration of phosphorus in additive molecule in comparision to zinc dialkyldithiophosphates.