PTFE Txheej O-Ring
PTFE Coated O-Rings yog dab tsi?
PTFE-coated O-rings yog cov foob sib xyaw ua ke uas muaj cov roj hmab O-ring core (piv txwv li, NBR, FKM, EPDM, VMQ) ua cov khoom siv elastic, uas siv cov zaj duab xis polytetrafluoroethylene (PTFE) nyias, sib xws, thiab sib txuas ruaj khov. Cov qauv no muab cov txiaj ntsig ntawm ob qho tib si, ua rau muaj cov yam ntxwv ua tau zoo tshwj xeeb.
Cov Cheeb Tsam Tseem Ceeb rau Daim Ntawv Thov
Vim lawv cov khoom zoo tshaj plaws, PTFE-coated O-rings siv dav hauv cov chaw xav tau nrog cov kev cai tshwj xeeb sealing:
Kev Lag Luam Tshuaj Lom Zem & Petrochemical:
Cov khoom siv kaw cov qhov dej, cov twj tso kua mis, cov reactors, thiab cov yeeb nkab flanges uas tuav cov xov xwm corrosive heev xws li cov kua qaub muaj zog, cov alkalis muaj zog, cov oxidizers muaj zog, thiab cov organic solvents.
Kev sib khi hauv cov txheej txheem xa tshuaj lom neeg siab kom tiv thaiv kev ua qias tuaj.
Kev Lag Luam Tshuaj thiab Biotechnology:
Kev kaw rau cov khoom siv ua haujlwm uas xav tau kev huv si, tsis muaj kev leaching, thiab tsis muaj kev ua qias tuaj (piv txwv li, bioreactors, fermenters, purification systems, filling lines).
Kev sib khi ua haujlwm tiv taus cov tshuaj ntxuav hnyav thiab cov pa kub siab siv rau hauv CIP (Clean-in-Place) thiab SIP (Sterilize-in-Place) cov txheej txheem.
Kev Lag Luam Khoom Noj & Dej Haus:
Cov ntsaws ruaj ruaj rau cov khoom siv ua raws li FDA/USDA/EU cov cai tiv tauj zaub mov (piv txwv li, cov khoom siv ua khoom noj, cov khoom ntim, cov kav dej).
Tiv taus cov tshuaj ntxuav thiab cov tshuaj tua kab mob hauv qib zaub mov.
Kev Lag Luam Semiconductor & Electronics:
Cov ntsaws ruaj ruaj rau cov dej ntshiab heev (UPW) thiab cov tshuaj lom neeg ntshiab (acids, alkalis, solvents) kev xa khoom thiab kev tuav cov txheej txheem, uas xav tau cov khoom me me thiab cov hlau ion leaching tsawg heev.
Cov ntsaws ruaj ruaj rau cov chaw nqus tsev thiab cov khoom siv ua plasma (xav tau cov pa tawm tsawg).
Kev Lag Luam Tsheb:
Kev kaw rau hauv qhov chaw kub siab xws li turbocharger systems thiab EGR systems.
Cov ntsaws ruaj ruaj uas xav tau kev sib txhuam tsawg thiab kev tiv taus tshuaj lom neeg hauv kev sib kis thiab cov roj systems.
Cov ntawv thov hauv cov tshuab cua txias roj teeb tsheb tshiab.
Kev Ua Haujlwm Huab Cua thiab Kev Tiv Thaiv:
Cov ntsaws ruaj ruaj uas xav tau kev ntseeg siab, tiv taus kub heev, thiab tiv taus roj tshwj xeeb / kua hydraulic hauv cov tshuab hydraulic, cov tshuab roj, thiab cov tshuab tswj ib puag ncig.
Kev Lag Luam Dav Dav:
Cov ntsaws ruaj ruaj rau cov thooj voos kheej kheej pneumatic thiab hydraulic uas xav tau kev sib txhuam tsawg, lub neej ntev, thiab kev tiv thaiv kev hnav (tshwj xeeb tshaj yog rau kev txav mus los ceev ceev, zaus siab).
Cov ntsaws ruaj ruaj rau ntau yam li qub, twj tso kua mis, thiab cov khoom sib txuas uas xav tau kev tiv thaiv tshuaj lom neeg thiab cov khoom tsis lo.
Cov ntsaws ruaj ruaj rau cov khoom siv nqus tsev (xav tau cov pa tawm tsawg).
Cov Kev Zoo Tshwj Xeeb thiab Cov Yam Ntxwv Ua Tau Zoo
Qhov zoo ntawm PTFE-coated O-rings yog nyob rau hauv kev ua tau zoo dua los ntawm lawv cov qauv:
Kev Tsis Muaj Tshuaj Lom Zem Tshwj Xeeb:
Ib qho ntawm cov txiaj ntsig tseem ceeb. PTFE ua pov thawj tias nws tiv taus txhua yam tshuaj lom neeg (xws li cov kua qaub muaj zog, cov alkali muaj zog, aqua regia, cov kuab tshuaj organic, thiab lwm yam), uas feem ntau cov roj hmab tsis tuaj yeem ua tiav ib leeg. Cov txheej txheem no cais cov tshuaj corrosive tawm ntawm cov roj hmab sab hauv, ua rau O-ring siv tau ntau dua hauv cov chaw muaj tshuaj lom neeg heev.
Qhov Sib Txhuam Tsis Tshua Muaj (CoF):
Ib qho txiaj ntsig tseem ceeb. PTFE muaj ib qho ntawm cov nqi CoF qis tshaj plaws ntawm cov ntaub ntawv khoom khov kho (feem ntau yog 0.05-0.1). Qhov no ua rau cov O-rings coated zoo heev hauv cov ntawv thov dynamic sealing (piv txwv li, reciprocating piston rods, rotating shafts):
Txo qhov kev sib txhuam ntawm txoj kev tawg thiab kev khiav.
Txo qhov kub thiab kev hnav uas tshwm sim los ntawm kev sib txhuam.
Ua kom lub neej ntawm lub foob ntev dua (tshwj xeeb tshaj yog nyob rau hauv kev siv ceev ceev, kev siv zaus siab).
Txhim kho kev siv hluav taws xob ntawm lub cev.
Kev Ua Haujlwm Kub Dav Dav:
Lub PTFE txheej nws tus kheej tswj tau qhov kev ua tau zoo thoob plaws qhov kub thiab txias dav heev ntawm -200 ° C txog + 260 ° C (lub sijhawm luv luv txog + 300 ° C). Qhov no nthuav dav qhov txwv kub siab tshaj plaws ntawm lub hauv paus roj hmab O-ring (piv txwv li, NBR lub hauv paus feem ntau txwv rau ~ 120 ° C, tab sis nrog PTFE txheej tuaj yeem siv rau qhov kub siab dua, nyob ntawm cov roj hmab xaiv). Kev ua haujlwm kub qis kuj tau lees paub.
Cov Khoom Zoo Tsis-Nplaum thiab Tsis-Wetability:
PTFE muaj lub zog ntawm qhov chaw qis heev, ua rau nws tiv taus kev nplaum thiab tsis ntub los ntawm cov dej thiab cov roj-raws li kua. Qhov no ua rau:
Txo qhov fouling, coking, lossis adhesion ntawm cov khoom seem ntawm cov khoom siv sib khi.
Kev ntxuav yooj yim, tshwj xeeb tshaj yog rau cov chaw ua haujlwm huv si xws li zaub mov thiab tshuaj.
Tswj tau qhov kev ua haujlwm sealing txawm tias muaj cov xov xwm nplaum.
Kev Huv Si Siab thiab Cov Leachables Tsawg:
Qhov nto PTFE txheej du thiab ntom ntom txo qhov leaching ntawm cov khoom me me, cov khoom ntxiv, lossis cov tshuaj uas tsis muaj molecular hnyav. Qhov no yog qhov tseem ceeb rau kev siv cov khoom siv purity siab heev hauv semiconductors, pharma, biotech, thiab zaub mov & dej haus, zoo tiv thaiv kev ua qias tuaj ntawm cov khoom.
Kev Tiv Thaiv Kev Hnav Zoo:
Txawm hais tias PTFE qhov kev tiv thaiv hnav tsis zoo tshaj plaws, nws cov CoF qis heev ua rau txo qis kev hnav. Thaum ua ke nrog cov roj hmab tsim nyog (muab kev txhawb nqa thiab kev ua kom muaj zog) thiab qhov chaw tiav / lubrication tsim nyog, coated O-rings feem ntau qhia tau tias muaj kev tiv thaiv hnav zoo dua li cov roj hmab liab qab O-rings hauv cov ntawv thov dynamic.
Kev Tiv Thaiv Tshuaj Lom Zem ntawm Cov Roj Hmab Substrate:
Cov txheej txheej no tiv thaiv cov roj hmab sab hauv los ntawm kev tawm tsam ntawm cov xov xwm, ua rau siv cov khoom siv roj hmab uas muaj cov yam ntxwv zoo dua (xws li elasticity lossis tus nqi, piv txwv li, NBR) hauv cov xov xwm uas feem ntau yuav o, tawv, lossis lwj cov roj hmab. Nws ua tau zoo "ua kom" cov roj hmab elasticity nrog PTFE txoj kev tiv thaiv tshuaj lom neeg.
Kev Sib Txuas Zoo ntawm Lub Tshuab Nqus Tsev:
Cov txheej PTFE zoo muaj qhov ceev zoo thiab tsis tshua muaj pa tawm, ua ke nrog lub elasticity ntawm cov roj hmab, muab kev kaw lub tshuab nqus tsev zoo.
3. Tej Yam Tseem Ceeb Yuav Tsum Xav Txog
Tus nqi: Siab dua li cov roj hmab O-rings txheem.
Cov Kev Cai Rau Kev Teeb Tsa: Yuav tsum tau ua tib zoo tuav kom tsis txhob ua rau lub txheej puas tsuaj nrog cov cuab yeej ntse. Cov grooves teeb tsa yuav tsum muaj cov hlau txhuas txaus thiab cov nto du.
Kev Ncaj Ncees ntawm Cov Txheej: Qhov zoo ntawm cov txheej (kev nplaum, kev sib xws, tsis muaj qhov) yog qhov tseem ceeb. Yog tias cov txheej raug tawg, cov roj hmab uas raug nthuav tawm poob nws qhov kev tiv thaiv tshuaj lom neeg zoo dua.
Kev Sib Txuas: Feem ntau nyob ntawm cov roj hmab uas xaiv. Lub txheej nws tus kheej tsis muab kev ywj pheej.
Kev Siv Tau Ntev: Txawm hais tias nws zoo dua li roj hmab liab qab, thaum kawg cov txheej yuav lwj thaum lub sijhawm ntev, kev sib hloov pauv hnyav lossis kev sib hloov. Kev xaiv cov roj hmab uas tsis yooj yim hnav (piv txwv li, FKM) thiab kev tsim qauv zoo tuaj yeem ua rau lub neej ntev dua.
Kev Txheeb Xyuas
Qhov tseem ceeb ntawm PTFE-coated O-rings yog nyob rau hauv yuav ua li cas PTFE txheej muab cov tshuaj inertness zoo tshaj plaws, qhov coefficient qis heev ntawm kev sib txhuam, ntau qhov kub thiab txias, cov khoom tsis lo, kev huv siab, thiab kev tiv thaiv substrate rau cov roj hmab O-rings ib txwm muaj. Lawv yog cov kev daws teeb meem zoo tshaj plaws rau cov teeb meem sealing uas muaj kev xeb muaj zog, kev huv siab, kev sib txhuam qis, thiab ntau qhov kub thiab txias. Thaum xaiv, nws yog ib qho tseem ceeb kom xaiv cov khoom siv roj hmab substrate thiab cov lus qhia txheej txheem raws li daim ntawv thov tshwj xeeb (media, kub, siab, dynamic / static), thiab xyuas kom meej tias kev teeb tsa thiab kev saib xyuas kom raug kom khaws cia kev ncaj ncees ntawm txheej txheem thiab kev ua haujlwm sealing.
Cov lus hauv qab no piav qhia txog cov yam ntxwv tseem ceeb thiab daim ntawv thov ntawm PTFE-coated O-rings:
