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Tribološke razmere v hidravličnih ventilih = [Tribological properties of hydraulic valves]Pezdirnik, Jože ; Vižintin, JožePogonsko - krmilna hidravlika ima praviloma veliko gostoto moči, kar je posledica visokih tlakov v sestavinah in tokovodnikih hidravličnega fluida. Ker so običajni tlaki v sodobnih hidravličnih ... napravah pogosto v območju 200 do 400 bar, so zato tudi sile delujoče na posamezne elemente v sestavinah sorazmerno velike. Kot posledico delovanja tlaka oziroma razlike tlakov na določene ploskve se, poleg običajnih sil, pojavljajo tudi nezaželene sile, ki nastopajo zaradi netočnosti izdelave elementov hidravličnih sestavin. Elementov idealnih oblik pa seveda ni možno izdelati. V hidravličnih sestavinah sta pogosto dva elementa v oscilatornem drsnem kontaktu. Neka sila se prenaša večinoma z oscilirajočega bata na mirujočo pušo. Ker površine elementov v drsnem kontaktu nimajo idealnih oblik, se prečna sila prenaša le preko nekaj vršičkov, ki iztopajo iz površine. Le-ti so pri večjih prečnih silah lahko plastično deformirani. Na teh stičnih vršičkih, izpostavljenih drsenju, se pojavlja trenje. Ker se večina dela sile trenja pretvarja v toploto, se temperatura na površini in v neposredni bližini mikro-kontaktov zelo hitro dvigne do svoje najvišje vrednosti.Type of material - conference contributionPublish date - 1996Language - slovenianCOBISS.SI-ID - 1997595
Author
Pezdirnik, Jože |
Vižintin, Jože
Topics
tribologija |
ventili hidravlični |
razmere tribološke |
frekvence |
amplitude |
sile bočne |
trenje |
mikro-kontakti površin
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Pezdirnik, Jože | 05573 |
Vižintin, Jože | 00812 |
Source: Personal bibliographies
and: SICRIS
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