Valve yokhala ndi teflon ndi valve yomwe imagwiritsa ntchito polytetrafluoroethylene (PTFE, yomwe imadziwikanso kuti Teflon) ngati chinthu chosindikizira, ndipo imagwiritsidwa ntchito kwambiri m'madera ambiri chifukwa cha ubwino wake wapadera. Pepalali liwonetsa ubwino wogwirira ntchito ndi magawo ogwiritsira ntchito ma valve okhala ndi fluorine.
Choyamba, ubwino wa machitidwe a PTFE mavavu
1. Kukana kwabwino kwa dzimbiri: kusindikiza pamwamba pa valve ya teflon kumapangidwa ndi zinthu za polytetrafluoroethylene, zomwe zimakhala ndi kukhazikika kwamphamvu kwambiri kwamankhwala ndipo zimatha kukana dzimbiri zama media ambiri, kuphatikiza ma acid amphamvu, alkali, organic solvents, etc. bwino m'munda wa corrosive media transportation.
2. Kuthamanga kwapansi kwapakati: PTFE ili ndi mphamvu yochepa kwambiri (0.05-0.1), yomwe imapangitsa kuti valve ya PTFE ikwanitse kuyenda bwino panthawi yotsegula ndi kutseka, kuchepetsa mphamvu yogwiritsira ntchito komanso kuchepetsa mphamvu yogwiritsira ntchito zipangizo.
3. Anti-viscosity: polytetrafluoroethylene ili ndi anti-viscosity yabwino, yomwe ingalepheretse zinthu kuti zisagwirizane ndi kusindikiza pamwamba ndikuchepetsa ntchito yokonza valve.
4. Kusinthasintha kwa kutentha: zida zosindikizira za valve ya PTFE zimatha kugwira ntchito mu -200 ° C mpaka 260 ° C kwa nthawi yaitali, ndipo zimatha kupirira kutentha kwakukulu mu nthawi yochepa, zomwe zimapangitsa kuti valavu ya PTFE ikhale amagwiritsidwa ntchito kumadera osiyanasiyana a kutentha.
5. Chitetezo chachitetezo: Chifukwa chakuti valavu yokhala ndi fluorine inayi imagwiritsa ntchito zinthu zopanda zitsulo monga malo osindikizira, sizidzatulutsa zinthu zovulaza ngakhale pansi pazifukwa zazikulu monga kutentha ndi kuthamanga kwambiri, kotero zimakhala ndi chitetezo chapamwamba.
Chachiwiri, gawo logwiritsira ntchito mavavu a PTFE okhala ndi mizere
1. Makampani opanga mankhwala: PTFE ma valve opangidwa ndi mzere amagwiritsidwa ntchito kwambiri m'makampani opanga mankhwala, makamaka m'mafakitale owononga, malo amphamvu a asidi ndi alkali, ma valve opangidwa ndi PTFE amatha kuonetsetsa kuti zipangizozi zikuyenda bwino komanso kuchepetsa ndalama zothandizira.
2. Makampani a petroleum: M'makampani a petroleum, ma valve opangidwa ndi PTFE nthawi zambiri amagwiritsidwa ntchito kunyamula mafuta, gasi ndi zinthu zina, ndipo kukana kwake kwa dzimbiri ndi kusindikiza kumapangitsa kuti ma valve a PTFE akhale valavu yomwe amakonda kwambiri pamakampani a petroleum.
3. Makampani opanga mankhwala: Makampani opanga mankhwala ali ndi zofunikira kwambiri paukhondo ndi chitetezo cha zipangizo, ndipo tetrafluorolined valve imangokwaniritsa zofunikirazi, choncho imagwiritsidwa ntchito kwambiri pamakampani opanga mankhwala.
4. Makampani opanga zamagetsi: Kugwiritsa ntchito ma valve opangidwa ndi PTFE muzitsulo zamagetsi kumawonetsedwa makamaka pakutumiza ndi kulamulira mpweya woyeretsa kwambiri ndi zakumwa, ndipo ntchito yake yabwino kwambiri imatha kutsimikizira kuti zipangizo zamagetsi zimagwira ntchito mokhazikika.
6. Makampani a zakudya: Chifukwa cha anti-viscosity ndi anti-corrosion properties za PTFE zomangira ma valve, zakhala zikugwiritsidwa ntchito kwambiri m'makampani a zakudya, monga ntchito yabwino kwambiri yotumizira mauthenga apamwamba a viscosity monga madzi ndi madzi.
Mwachidule, mavavu okhala ndi mizere ya PTFE akhala akugwiritsidwa ntchito kwambiri m'magawo ambiri chifukwa cha zabwino zawo zogwirira ntchito. Ndi chitukuko chosalekeza cha sayansi ndi ukadaulo, gawo logwiritsira ntchito mavavu okhala ndi mizere ya PTFE lidzakulitsidwanso mtsogolo.
Nthawi yotumiza: Sep-08-2023
