PTFE daim kab xev tuaj yeem tiv taus qhov kub li ntawm -400 degree F txog 500 degree F (-240 degree rau 260 degree ). PTFE muaj lub siab melting point txog 327 degree, tab sis nws pib deteriorate thaum kub nce siab tshaj 200 degree mus rau 260 degree. Qhov tsawg kawg nkaus kev nyab xeeb kev khiav hauj lwm kub ntawm PTFE daim kab xev yog hais txog -200 degree, thaum lub sab sauv txwv ntawm tshav kub kuj yog feem ntau nyob ib ncig ntawm +260 degree . High-density PTFE tapes tuaj yeem tiv taus qhov kub thiab txias li ntawm -200 degree mus rau +260 degree, thaum qis-density tapes tsis tuaj yeem tiv taus qhov kub siab.
Yuav ua li cas thov PTFE daim kab xev
Thaum ua hauj lwm nrog PTFE daim kab xev, thawj thiab tseem ceeb tshaj plaws txoj hauj lwm yog ib txwm ua kom paub tseeb tias koj siv hom kab xev kom raug rau daim ntawv thov. Thaum paub meej, koj yuav tsum tau ua tib zoo ua raws li cov kauj ruam yooj yim hauv kev txiav txim:
1. Ua ntej, ntxuav cov xov ntawm cov yeeb nkab sib koom ua ke qhov twg PTFE daim kab xev yuav raug siv. Cov kav dej uas twb muaj lawm yuav muaj cov av, xeb, roj, lossis lwm cov yeeb nkab sealants los ntawm kev siv yav dhau los. Nrog rau qhov ntev ntawm cov kav dej tshiab, cov xov yuav tsis tau raug ntxuav kom huv si tom qab ua haujlwm, uas txhais tau tias tej zaum yuav muaj hlau shavings los yog lub Hoobkas roj tam sim no uas yuav cuam tshuam tsis zoo rau kev ncaj ncees ntawm lub foob tsim. Tej zaum koj yuav xav tau cov khoom tshwj xeeb, xws li cov khoom siv hluav taws xob muaj zog, kom tshem tawm qee qhov tawv ncauj lossis hnyav hnyav thiab roj.
2. Tso cai rau cov xov hlau uas huv si kom qhuav kom huv si ua ntej sim ua lwm yam ntxiv. Qhov no feem ntau tuaj yeem ua tiav nrog ceev faj siv cov ntaub so ntswg, tab sis yog tias ua tau, nws yog ib qho tsim nyog kom lawv tawm sab nraud kom huab cua qhuav tag. Txawm li cas los xij, koj yuav tsum xyuas kom meej tias tsis muaj cov hlaws dej daig hauv cov kab nruj tshaj plaws ntawm lossis ib ncig ntawm cov xov uas yuav haum ua ke.
3. Thaum lub fittings qhuav tag, koj tuaj yeem pib qhwv cov xov nrog PTFE sealing daim kab xev. Pib ib kab los ntawm qhov qhib kawg, qhov no yuav tiv thaiv cov khoom seem ntawm cov khoom txiav los ntawm kev nkag mus rau hauv cov yeeb nkab. qhwv nyob rau hauv tib txoj kev ntawm qhovntsej thiaj tsis mob raws li cov xov, rov qab mus rau lub yeeb nkab. Qhov no yog qhov tseem ceeb rau kev tiv thaiv kev sib tw tsis xav tau, xws li daim kab xev bunching lossis unraveling thaum rov qab kawg ntawm kev sib koom ua ke.
4. Thaum koj ua hauj lwm koj txoj hauv txoj kab, koj yuav tsum sib tshooj ntawm cov kab xev los ntawm ib nrab ntawm qhov dav kom ntseeg tau tias muaj kev tiv thaiv tag nrho. Txawm hais tias qee qhov deformation ntawm cov khoom nruab nrab ntawm cov xov yuav pab tsim kom muaj kev sib khi nruj dua, ceev faj kom tsis txhob siv ntau dhau, vim tias deformation ntau dhau tuaj yeem ua rau muaj teeb meem. Thaum qhwv, rub kom nruj kom muaj qhov nro txaus kom cov xov tuav kom pom tseeb ridges txawm tias los ntawm cov tuab tuab los yog ntau hom kab xev.
5. Ua li no mus kom txog rau thaum kawg ntawm cov xov kawg mus txog kwv yees li ib zaug tag nrho. Ua kom tiav qhov kawg qhwv los ntawm kev txiav thiab gluing qhov kawg ntev ntawm xoob daim kab xev, xyuas kom meej tias tsis muaj dab tsi tsis raug adhered thiab txiav kawg presses smoothly thiab seamlessly tiv thaiv tus so ntawm qhwv.
PTFE daim kab xev tsim cov tawv nqaij nruj los yog khi ib ncig ntawm cov xov ntawm ntau hom kev sib koom ua ke hauv cov kav dej thiab cov kav dej.
Ntxiv rau kev ua raws li cov khoom siv deformable thiab pab tiv thaiv kom tsis txhob xau (muab daim kab xev yog tuab thiab tuab txaus), nws kuj tseem lubricates cov xov sib txuas. Qhov tsis tshua muaj kev sib txhuam ntawm PTFE yog lub luag haujlwm rau cov nyhuv lubricating no. Qhov tseeb, PTFE muaj ib qho qis tshaj coefficients ntawm kev sib txhuam ntawm cov khoom paub!
Daim ntawv thov ntawm PTFE daim kab xev yuav muab ib tug nruj haum rau cov yeeb nkab haum threads thiab tseem yuav tiv thaiv lawv los ntawm seizing yog hais tias lawv yuav tsum tau unscrewed yav tom ntej.