Evaluation of tribological properties of seals running in contact with vegetable oil

• Autorzy: Szczypiński-Sala W. , Lubas J.

Warianty tytułu

PL

Ocena właściwości tribologicznych uszczelnień pracujących w kontakcie z olejami roślinnymi

• Języki publikacji: EN

Abstrakty

EN

The article describes the results of the measurement to evaluate the operation characteristic of o-ring seals in case of the operation with vegetable oils. The measurements were made on the model of a sealing node in hydraulic cylinder, where the round cross section seal cooperated with the piston rod. The changes of the friction force during rod movement resulting from the friction between the seal and the rod were analysed. The tests were carried out with two vegetable oils mostly used in industry: rape oil and soybean oil. The products based on vegetable oils can be an alternative to products made on the basis of petroleum. However, vegetable oils are characterized by other properties than mineral oils. The physical and chemical properties of vegetable oils depend on the composition of the fatty acid mixture. The observation of the influence of the occurrence of oxidative gelation on friction force was also conducted. In case of vegetable oils, oxypolymerization tendencies of these fluids are a very significant factor, which can influence the characteristics of friction nodes operation.

PL

W artykule omówiono wyniki przeprowadzonych badań, których celem była ocena charakterystyki pracy uszczelnienia w ruchu posuwisto-zwrotnym działającego w kontakcie z olejami roślinnymi. Pomiary wykonano na modelu węzła uszczelniającego w cylindrze hydraulicznym. Badaną parą uszczelniającą było tłoczysko i pierścień uszczelniający typu o-ring. Analizie poddano zmiany siły tarcia podczas roboczego suwu tłoczyska oraz wpływ na ich wartość prędkości przesuwu tłoczyska. Podczas testów w celu porównania wykorzystano dwa szeroko rozpowszechnione oleje roślinne: olej rzepakowy i olej sojowy. Produkty oparte na olejach roślinnych stanowić mogą alternatywę dla tych pochodzenia mineralnego. Oleje roślinne charakteryzują się jednak odmiennymi właściwościami w porównaniu z olejami mineralnymi. W ich przypadku obserwuje się tendencję do przebiegających z czasem reakcji polimeryzacji prowadzących do zmian lepkości i żelowania oleju. Wpływ tych zjawisk na prace węzła uszczelniającego również był przedmiotem obserwacji.

Słowa kluczowe

EN

mechanical seals; vegetable oils; friction

PL

uszczelnienia; oleje roślinne; tarcie

• Wydawca: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
• Czasopismo: Tribologia
• Rocznik: 2017
• Tom: nr 6
• Strony: 95--103
• Opis fizyczny: Bibliogr. 32 poz., rys., wykr.

Twórcy

autor

Szczypiński-Sala W.

• Cracow University of Technology, Faculty of Mechanical Engineering, Jana Pawla II 37, 31-864 Cracow, Poland

autor

Lubas J.

• Rzeszow University of Technology, Dept of Combustion Engines and Transport, Powstańców Warszawy 8; 35-959 Rzeszow, Poland.

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Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).