PTFE Mafuta Chisindikizo

Cholinga cha zisindikizo zamafuta ndikusindikiza kusindikiza pakati pa crankshaft yozungulira ndi kunja.Zisindikizo zamafuta akale zimakhala ndi nyumba yachitsulo yomwe imanyamula milomo yosindikiza komanso imaperekanso ntchito yosindikiza.Milomo yosindikiza ya zosindikizira zamafuta nthawi zambiri imapangidwa ndi zinthu za elastomer, ndipo imalumikizana ndi pamwamba pa shaft yozungulira.Apa, mlomo umakanikizidwa pamwamba pa shaft pogwiritsa ntchito mphete ya kasupe.Chifukwa cha kayendedwe ka kasinthasintha, pali kusiyana kosindikiza kwa pafupifupi.1 µm m'mphepete mwa milomo.Mafuta amatha kulowa mumpata uwu, womwe umathandizira kudzoza milomo yosindikiza.

Kupititsa patsogolo kamangidwe ka injini kumapangitsa kuti pakhale kufunika kokulirapo pamtundu woterewu wamafuta.Kuthamanga kwa injini yapamwamba ndi kutentha kwa mafuta, nthawi yayitali pakati pa kusintha kwa mafuta ndi mafuta odzola okhala ndi zowonjezera zamakono zomwe zimachita mwaukali ndi zipangizo zosindikizira zimafuna njira zatsopano komanso zokhalitsa.Zinthu zosindikizira mafuta amtsogolo zimatchedwa POLYTETRAFLUOROETHYLENE kapena PTFE.Zopangira izi zimadziwika kwambiri pansi pa dzina la malonda polima.

Kukangana kochepa komanso kugwiritsa ntchito mphamvu pang'ono ndiye zabwino zomwe zimaperekedwa ndi zisindikizo zamafuta za PTFE.Zisindikizozi zitha kugwiritsidwa ntchito popanda zovuta komanso ndi ntchito youma kapena mafuta osakwanira.Zida zotenthetsera, zomwe zimagwira ntchito kuyambira -130 ° C mpaka +200 ° C, ndizosafanana.Kuphatikiza apo, PTFE imadziwika ndi kukana kwamphamvu kwamankhwala komanso torque yocheperako ikayima.

Mukatenthedwa, PTFE imayesa kubwerera ku mawonekedwe ake oyambirira.M'mawu ena: Zolembazo "zimakumbukira" momwe zidalili poyamba.Izi zimadziwika kuti pulasitiki memory effect, ndipo zimalola kuti zisindikizo zimangidwe popanda kasupe wonyezimira.Pakupanga, milomo yosindikiza imapangidwa ngati mphete yathyathyathya, yomwe imapangidwira ku mphete yolimbikitsa.Mukalumikizana pa shaft, milomo yotsekera yotsekerayo imakula ndikupindika kuti ifanane ndi m'mimba mwake.Mlomo wosindikizidwa ukangotentha panthawi yogwira ntchito ya injini, imayesa kubwerera ku mawonekedwe ake oyambirira.

Nyumba yakunja imapangidwa ndi chitsulo chosapanga dzimbiri.Mphete ya O ya fluoroelastomer imatsimikizira kusindikiza koyenera.The m'mimba mwake mwangwiro concentric ndi awiri akunja.Milomo yeniyeni yosindikiza imapangidwa ndi PTFE yosamva kuvala komanso yotsika kwambiri.Chisindikizo chowonjezera cha fumbi (milomo ya rabara kapena chingwe chomverera) chimapereka chotchinga chothandiza polimbana ndi tinthu tating'onoting'ono.