PTFE Yokutidwa ndi O-Ring
Kodi PTFE Coated O-Rings ndi chiyani
PTFE- TACHIMATA O-mphete ndi gulu zidindo zokhala ndi miyambo mphira O-mphete pachimake (mwachitsanzo, NBR, FKM, EPDM, VMQ) monga zotanuka gawo lapansi, pomwe filimu woonda, yunifolomu, ndi zolimba omangika wa polytetrafluoroethylene (PTFE) ntchito. Kapangidwe kameneka kamaphatikiza ubwino wa zipangizo zonse ziwiri, zomwe zimapangitsa kuti zikhale ndi machitidwe apadera.
Magawo Ofunika Kwambiri
Chifukwa cha mawonekedwe awo apamwamba, mphete za O-zokutidwa ndi PTFE zimagwiritsidwa ntchito kwambiri m'malo ovuta omwe ali ndi zofunikira zosindikiza:
Makampani a Chemical & Petrochemical:
Ma valve osindikizira, mapampu, ma reactors, ndi mapaipi flange omwe amagwira ntchito zowononga kwambiri monga ma asidi amphamvu, ma alkali amphamvu, oxidizer amphamvu, ndi zosungunulira organic.
Kusindikiza mu machitidwe operekera mankhwala oyeretsedwa kwambiri kuti apewe kuipitsidwa.
Makampani a Pharmaceutical & Biotechnology:
Kusindikiza kwa zida zopangira ntchito zomwe zimafuna ukhondo wambiri, kusatulutsa, komanso kusaipitsidwa (mwachitsanzo, ma bioreactors, fermenters, zoyeretsera, mizere yodzaza).
Kusindikiza kugonjetsedwa ndi zotsukira mankhwala amphamvu ndi nthunzi yotentha kwambiri yomwe imagwiritsidwa ntchito mu njira za CIP (Clean-in-Place) ndi SIP (Sterilize-in-Place).
Makampani a Chakudya & Chakumwa:
Zisindikizo za zida zokumana ndi FDA/USDA/EU malamulo okhudzana ndi chakudya (mwachitsanzo, zida zopangira, zodzaza, mapaipi).
Imalimbana ndi zotsukira zakudya komanso zotsukira.
Semiconductor & Electronics Viwanda:
Zisindikizo zamadzi a ultrapure (UPW) ndi mankhwala oyeretsedwa kwambiri (ma acid, alkalis, zosungunulira) zoperekera ndi zogwirira ntchito, zomwe zimafuna kuti tinthu tating'onoting'ono timene timatulutsa tinthu tating'onoting'ono ndi zitsulo zitsulo ziwonongeke.
Zisindikizo za zipinda zovumbula ndi zida zopangira plasma (zomwe zimafuna kutulutsa mpweya wochepa).
Makampani Agalimoto:
Kusindikiza m'malo otentha kwambiri monga makina a turbocharger ndi machitidwe a EGR.
Zisindikizo zomwe zimafuna kugundana kochepa komanso kukana kwamankhwala pama transmissions ndi mafuta.
Mapulogalamu mu makina atsopano ozizirira mabatire agalimoto.
Zamlengalenga & Chitetezo:
Zisindikizo zomwe zimafuna kudalirika kwakukulu, kukana kutentha kwambiri, komanso kukana mafuta apadera / madzi amadzimadzi amadzimadzi mumagetsi a hydraulic, machitidwe a mafuta, ndi machitidwe olamulira chilengedwe.
Makampani Ambiri:
Zisindikizo za ma silinda a pneumatic ndi hydraulic omwe amafunikira kugundana kochepa, moyo wautali, komanso kukana kuvala (makamaka pamayendedwe othamanga kwambiri, othamanga kwambiri).
Zisindikizo za mavavu osiyanasiyana, mapampu, ndi zolumikizira zomwe zimafuna kukana kwamankhwala komanso zinthu zosamangira.
Zisindikizo za zida za vacuum (zofuna kutulutsa mpweya wochepa).
Ubwino Wapadera ndi Makhalidwe Achitidwe
Ubwino waukulu wa mphete za PTFE-zokutidwa ndi O-rings zagona pakupanga kophatikizana kochokera ku kapangidwe kake:
Mwapadera Chemical Inertness:
Chimodzi mwazinthu zabwino kwambiri. PTFE imasonyeza kukana kwapadera kwa pafupifupi mankhwala onse (kuphatikizapo ma asidi amphamvu, alkalis amphamvu, aqua regia, organic solvents, etc.), omwe magawo ambiri a labala sangathe kukwaniritsa okha. Chophimbacho chimalekanitsa bwino zofalitsa zowononga kuchokera pakatikati pa mphira wamkati, ndikukulitsa kwambiri mawonekedwe a O-ring m'malo opangira mankhwala.
Kutsika Kwambiri Kwambiri kwa Friction (CoF):
Phindu lalikulu. PTFE ili ndi imodzi mwazinthu zotsika kwambiri za CoF pakati pa zida zolimba zodziwika (nthawi zambiri 0.05-0.1). Izi zimapangitsa mphete za O-zokutidwa kuti ziziyenda bwino pamakina osindikizira (mwachitsanzo, ndodo za pisitoni zobwerezabwereza, ma shaft ozungulira):
Amachepetsa kwambiri kuthamanga kwa magazi komanso kuthamanga kwa magazi.
Amachepetsa kutentha koyambitsa mikangano ndi kuvala.
Imakulitsa moyo wa chisindikizo (makamaka pamapulogalamu othamanga kwambiri, othamanga kwambiri).
Kupititsa patsogolo mphamvu zamagetsi zamagetsi.
Kutentha Kwambiri Kwambiri:
Kupaka kwa PTFE kumasungabe magwiridwe antchito pa kutentha kwakukulu koyambira -200 ° C mpaka +260 ° C (kwakanthawi kochepa mpaka +300 ° C). Izi zimawonjezera kutentha kwapamwamba kwa mphira wa O-ring (mwachitsanzo, NBR maziko amakhala ochepa ~ 120 ° C, koma ndi PTFE zokutira zitha kugwiritsidwa ntchito pa kutentha kwakukulu, kutengera mphira wosankhidwa). Kuchita kwa kutentha kochepa kumatsimikiziridwa.
Katundu Wabwino Wopanda Ndodo ndi Kusanyowa:
PTFE ili ndi mphamvu yotsika kwambiri padziko lapansi, ndikupangitsa kuti ikhale yosagwirizana ndi kumamatira komanso osanyowetsa ndi madzi ndi zakumwa zamafuta. Izi zimabweretsa:
Kuchepetsa kuipitsa, kuphika, kapena kumatira zotsalira za media pamalo osindikizira.
Kuyeretsa kosavuta, makamaka koyenera magawo aukhondo kwambiri monga chakudya ndi pharma.
Kusungidwa kosindikiza ngakhale ndi viscous media.
Ukhondo Wapamwamba ndi Zochepa Zothekera:
Pamwamba, wandiweyani wa PTFE wokutira amachepetsa kutsika kwa tinthu tating'onoting'ono, towonjezera, kapena zinthu zochepa zolemera mamolekyulu. Izi ndizofunikira kwambiri pakuyeretsa kopitilira muyeso mu semiconductors, pharma, biotech, ndi chakudya & chakumwa, kuletsa kuipitsidwa kwazinthu.
Good Wear Resistance:
Ngakhale kukana kwa PTFE kwachilengedwe sikuli koyenera, CoF yake yotsika kwambiri imachepetsa mavalidwe. Zikaphatikizidwa ndi gawo lapansi loyenera la rabara (lopereka chithandizo ndi kulimba) komanso kumalizidwa koyenera kwa pamwamba / kudzoza, mphete za O-zokutidwa nthawi zambiri zimawonetsa kukana kuvala kuposa mphete za O-ring za rabara zomwe zimagwiritsidwa ntchito mwamphamvu.
Kukaniza kwa Chemical Resistance ya Rubber Substrate:
Chophimbacho chimateteza mkati mwa mphira wamkati kuti zisawukidwe ndi media, kulola kugwiritsa ntchito zida za rabala zomwe zili ndi zinthu zabwinoko (monga kukhazikika kapena mtengo, mwachitsanzo, NBR) pama media omwe nthawi zambiri amatha kutupa, kuumitsa, kapena kutsitsa mphira. Iwo bwino "zida" mphira elasticity ndi PTFE a mankhwala kukana.
Kugwirizana Kwabwino kwa Vacuum:
Zovala zapamwamba za PTFE zimakhala ndi kachulukidwe kabwino komanso kutsika pang'ono, kuphatikizika ndi kukhazikika kwapakati pa mphira, kusindikiza bwino kwa vacuum.
3.Kuganizira Zofunika
Mtengo: Wokwera kuposa mphete za O-mphete za rabara.
Zofunikira pakuyika: Pamafunika kusamalira mosamala kuti musawononge zokutira ndi zida zakuthwa. Ma grooves oyikapo ayenera kukhala ndi ma chamfer okwanira otsogolera komanso zomaliza zosalala.
Kupaka Kukhulupirika: Ubwino wa zokutira (kumatira, kufanana, kusapezeka kwa mapini) ndikofunikira. Ngati zokutira zathyoledwa, mphira wowonekerawo amataya mphamvu yake yowonjezereka ya mankhwala.
Compression Set: Zimatengera gawo lapansi la rabara lomwe lasankhidwa. Chophimbacho chokha sichimapereka mphamvu yolimba.
Moyo Wautumiki Wamphamvu: Ngakhale kuti zokutirazo ndizopambana kwambiri kuposa mphira wopanda kanthu, zokutirazo pamapeto pake zimatha chifukwa chakuyenda kwanthawi yayitali, kobwerezabwereza kapena kozungulira. Kusankha ma raba oyambira osamva kuvala (mwachitsanzo, FKM) ndi mapangidwe okhathamiritsa amatha kukulitsa moyo.
Chidule
Phindu lalikulu la mphete za PTFE-zokutidwa ndi O-rings zagona momwe zokutira za PTFE zimaperekera kusakhazikika kwamphamvu kwamankhwala, kugundana kotsika kwambiri, kutentha kwakukulu, zinthu zopanda ndodo, ukhondo wapamwamba, ndi chitetezo cha gawo lapansi ku mphete zamba za O-rings. Ndiwo njira yabwino yothetsera zovuta zomata zomwe zimakhala ndi dzimbiri lamphamvu, ukhondo wambiri, kukangana kochepa, komanso kutentha kwakukulu. Posankha, ndikofunikira kuti musankhe zida zoyenera za mphira ndi zokutira kutengera momwe mukugwiritsidwira ntchito (zowulutsa, kutentha, kupanikizika, zosunthika / zokhazikika), ndikuwonetsetsa kuyika ndi kukonza moyenera kuti musunge kukhulupirika kwa zokutira ndi kusindikiza.
Gome ili m'munsili likufotokozera mwachidule za zofunikira ndi ntchito za PTFE-zokutidwa ndi O-rings:
