PTFE Coated O-Ring
Yintoni i-PTFE Coated O-Rings
I-PTFE-coated O-rings yizitywina ezidibeneyo ezibonisa i-rubber yendabuko ye-O-ring core (umz., i-NBR, i-FKM, i-EPDM, i-VMQ) njenge-substrate e-elastiki, phezu kwayo ifilimu ebhityileyo, iyunifomu, kwaye idityaniswe ngokuqinileyo ye-polytetrafluoroethylene (PTFE) isetyenziswa. Esi sakhiwo sidibanisa iingenelo zombini izixhobo, okubangela iimpawu zokusebenza ezizodwa.
IiNdawo zeSicelo esiPhambili
Ngenxa yeepropathi zazo ezibalaseleyo, ii-PTFE-coated O-rings zisetyenziswa ngokubanzi kwiindawo ezibango kunye neemfuno zokutywinwa ezikhethekileyo:
Umzi mveliso weMichiza kunye nePetrokhemikhali:
Iivalvu zokutywina, iimpompo, ii-reactors, kunye neeflange zemibhobho ezibamba imidiya eyingozi kakhulu njengeeasidi ezomeleleyo, iialkali ezomeleleyo, ii-oxidizers ezomeleleyo, kunye nezinyibilikisi eziphilayo.
Ukutywinwa kwiinkqubo zokuhanjiswa kweekhemikhali ezicocekileyo kakhulu ukukhusela ukungcola.
Umzi mveliso woShishino kunye neBiyotechnology:
Ukutywinwa kwezixhobo zokusebenza ezifuna ukucoceka okuphezulu, kungabikho ukuvuza, kunye nokungcola (umzekelo, ii-bioreactors, i-fermenters, iinkqubo zokucoca, imigca yokuzalisa).
Ukutywinwa kokumelana nabacoci beekhemikhali ezinzima kunye ne-steam yobushushu obuphezulu obusetyenziswa kwiinkqubo ze-CIP (Clean-in-Place) kunye ne-SIP (Sterilize-in-Place).
Ishishini lokutya kunye neziselo:
Izitywina zentlanganiso yezixhobo ze-FDA/USDA/EU zoqhagamshelwano lokutya (umzekelo, izixhobo zokusebenza, izigcwalisi, imibhobho).
Ukumelana nezixhobo zokucoca umgangatho wokutya kunye nezicoci.
ISemiconductor & Electronics Industry:
Izitywina zamanzi e-ultrapure (UPW) kunye neekhemikhali ezihlambulukileyo eziphezulu (i-acids, i-alkalis, i-solvents) ukuhanjiswa kunye neenkqubo zokuphatha, ezifuna i-particle ephantsi kakhulu kunye ne-ion leaching yensimbi.
Ukutywinwa kwamagumbi okufunxa kunye nezixhobo zokulungisa iplasma (ezifuna ukuphuma kwegesi okuphantsi).
Umzi mveliso weemoto:
Ukutywinwa kwiindawo ezinobushushu obuphezulu njengeenkqubo ze-turbocharger kunye neenkqubo ze-EGR.
Izitywina ezifuna ukukhuhlana okuphantsi kunye nokumelana neekhemikhali kwiinkqubo zothumelo kunye ne-fuel systems.
Usetyenziso kwiinkqubo ezintsha zokupholisa ibhetri yesithuthi samandla.
I-Aerospace & Defense:
Izitywina ezifuna ukuthembeka okuphezulu, ukumelana nobushushu obugqithisileyo, kunye nokuchasana nombane okhethekileyo / ulwelo lwehydraulic kwiinkqubo ze-hydraulic, iinkqubo zepetroli, kunye neenkqubo zolawulo lokusingqongileyo.
Ishishini ngokubanzi:
Ukutywinwa kweesilinda ze-pneumatic kunye ne-hydraulic ezifuna ukukhuhlana okuphantsi, ubomi obude, kunye nokumelana nokunxiba (ingakumbi kwi-high-speed, i-high-frequency reciprocating motion).
Izitywina kwiivalvu ezahlukeneyo, iimpompo, kunye nezihlanganisi ezifuna ukuxhathisa iikhemikhali kunye neempawu ezingezizo.
Izitywina zezixhobo zokufunxa (ezifuna ukuphuma kwegesi okuphantsi).
Izinto eziluncedo eziZodwa kunye neempawu zokuSebenza
Eyona nto iluncedo ye-PTFE-coated O-rings ilele kuphuculo lwentsebenzo edityanisiweyo evela kulwakhiwo lwazo:
Ukungazenzi okuKhethekileyo kweMichiza:
Enye yeenzuzo eziphambili. I-PTFE ibonisa ukuxhathisa okubalaseleyo kuzo zonke iikhemikhali (kubandakanya ii-asidi ezomeleleyo, i-alkalis eyomeleleyo, i-aqua regia, izinyibilikisi ze-organic, njl.), apho uninzi lwee-substrates zerabha azikwazi ukuzifumana zodwa. I-coating ihlula ngokufanelekileyo imidiya ebolileyo kwi-rubber yangaphakathi, ukwandisa kakhulu uluhlu lwesicelo se-O-ring kwiindawo eziyingozi kakhulu zeekhemikhali.
I-Coefficient ephantsi kakhulu ye-Friction (CoF):
Inzuzo ebalulekileyo. I-PTFE inelinye lawona maxabiso asezantsi e-CoF phakathi kwezinto eziqinileyo ezaziwayo (ngokuqhelekileyo yi-0.05-0.1). Oku kwenza i-O-rings egqunyiweyo igqwese kusetyenziso oluguquguqukayo lokutywina (umzekelo, iirodi zepiston eziphindaphindayo, iishafti ezijikelezayo):
Kuyanciphisa kakhulu ukuqhekeka kunye nokuqhuba ingxabano.
Inciphisa ubushushu obubangelwa kukungqubana kunye nokunxiba.
Yandisa ubomi betywina (ingakumbi kwi-high-speed, high-frequency applications).
Ukuphucula ukusebenza kakuhle kwamandla enkqubo.
Uluhlu olubanzi lobushushu bokusebenza:
I-PTFE yokwambathisa ngokwayo igcina ukusebenza kuluhlu olubanzi kakhulu lobushushu ukusuka -200 °C ukuya +260°C (ixesha elifutshane ukuya kuthi ga +300°C). Oku kwandisa kakhulu umda wobushushu obuphezulu besiseko serabha ye-O-ring (umzekelo, isiseko se-NBR siqhelekile ukuya ku- ~ 120°C, kodwa nge-PTFE yokwambathisa ingasetyenziswa kumaqondo obushushu aphezulu, ngokuxhomekeke kwirabha ekhethiweyo). Ukusebenza kobushushu obuphantsi kwakhona kuqinisekisiwe.
IiPropathi ezigqwesileyo eziNgenantonga kunye nokuNgamanzi:
I-PTFE inamandla asezantsi kakhulu, iyenza ixhathise kakhulu ukuncamatheliswa nokungamanzisi ngawo omabini amanzi kunye nolwelo olusekwe kwi-oyile. Oku kubangela ukuba:
Ukwehliswa kokungcola, ukupheka, okanye ukuncamathela kweentsalela zemidiya kwindawo yokutywina.
Ukucoca ngokulula, ngakumbi kufanelekile kumacandelo ococeko oluphezulu njengokutya kunye ne-pharma.
Ukugcinwa kokutywinwa kokusebenza kunye nemidiya ye-viscous.
Ukucoceka okuPhakamileyo kunye nokuNgavuleleke kancinci:
Umphezulu ogudileyo, oshinyeneyo wokugquma wePTFE unciphisa ukuvuza kwamasuntswana, izongezo, okanye izinto ezinobunzima obuphantsi bemolekyuli. Oku kubalulekile kwizicelo zokucoceka okuphezulu kakhulu kwi-semiconductors, i-pharma, i-biotech, kunye nokutya kunye nesiselo, ukuthintela ngokufanelekileyo ukungcoliseka kwemveliso.
Ukuxhathisa Okulungileyo:
Ngelixa i-PTFE indalo yokunganyangeki ayilunganga, i-CoF yayo ephantsi kakhulu iwanciphisa kakhulu amazinga okunxiba. Xa idityaniswe ne-rubber substrate efanelekileyo (ukubonelela ngenkxaso kunye nokomelela) kunye nokugqitywa kwendawo efanelekileyo / ukuthambisa, ii-O-rings ezigqunyiweyo ngokuqhelekileyo zibonisa ukuxhathisa okungcono ukunxiba kune-rubber e-O-rings kwizicelo ezinamandla.
Ukomelezwa koKuxhathisa kwiMichiza yeSubstrate yeRubha:
I-coating ikhusela undoqo werabha ongaphakathi kuhlaselo lwamajelo eendaba, ivumela ukusetyenziswa kwemathiriyeli yerabha eneempawu ezingcono zendalo (ezifana nokunwebeka okanye ixabiso, umzekelo, i-NBR) kumajelo osasazo anokuthi adumbe, aqine, okanye athobe irabha. Isebenza ngokufanelekileyo "izixhobo" ukunwebeka kwerabha kunye nokumelana nemichiza ye-PTFE.
Ukuhambelana kakuhle kweVacuum:
Iingubo ezikumgangatho ophezulu ze-PTFE zinoxinano olulungileyo kunye nokuphuma okuphantsi ngokwendalo, kudityaniswe nokunyameka kombindi werabha, ukubonelela ngokutywinwa kwevacuum okusebenzayo.
3.Iingqwalasela ezibalulekileyo
Iindleko: Iphezulu kune-rubber eqhelekileyo ye-O-rings.
IiMfuno zokuFakela: Funa ukuphatha ngokucophelela ukuphepha ukonakalisa isambatho ngezixhobo ezibukhali. Iigrooves zokufakela kufuneka zibe ne-chamfers ezoneleyo zokukhokela kunye nemigangatho egudileyo.
I-Coating Integrity: Umgangatho wengubo (ukubambelela, ukufana, ukungabikho kweepinhole) kubalulekile. Ukuba i-coat iyaphulwa, i-rubber evezwayo ilahlekelwa ukuchasana kweekhemikhali okuphuculweyo.
Iseti yoxinzelelo: Ngokuyintloko ixhomekeke kwi-rubber substrate ekhethiweyo. I-coating ngokwayo ayinikezeli ukuqina koxinzelelo.
UBomi beNkonzo obuNgqongileyo: Ngelixa iphezulu kakhulu kunerabha engenanto, i-coating iya kuthi ekugqibeleni iguge phantsi kwexesha elide, eliphindaphindayo okanye ukunyakaza okujikelezayo. Ukukhetha iirubha ezisisiseko ezixhathisayo (umzekelo, i-FKM) kunye noyilo oluphuculweyo kunokwandisa ubomi.
Isishwankathelo
Ixabiso elingundoqo le-PTFE-coated O-rings lilele kwindlela i-PTFE yokugquma inikezela ngayo ukungazenzisi kweekhemikhali eziphezulu, i-coefficient ephantsi kakhulu ye-friction, uluhlu olubanzi lobushushu, iipropati ezingenakukhuni, ukucoceka okuphezulu, kunye nokukhuselwa kwe-substrate kwi-O-ring ye-rubber yendabuko. Zisisisombululo esifanelekileyo sokufuna imiceli mngeni yokutywina ebandakanya umhlwa owomeleleyo, ukucoceka okuphezulu, ukukhuhlane okuphantsi, kunye noluhlu olubanzi lobushushu. Xa ukhetha, kubalulekile ukukhetha imathiriyeli efanelekileyo yerubha kunye neenkcukacha zokugquma ngokusekwe kwisicelo esithile (imidiya, ubushushu, uxinzelelo, i-dynamic/static), kunye nokuqinisekisa ukufakela okuchanekileyo kunye nokugcinwa kokugcina ingqibelelo yokwambathisa kunye nokusebenza kokutywinwa.
Itheyibhile engezantsi ishwankathela iimpawu eziphambili kunye nokusetyenziswa kwe-PTFE-coated O-rings:
