Kodi payipi yolumikizidwa ndi ptfe ndi chiyani? | BESTEFLON

M'zaka zaposachedwapa, polytetrafluoroethylene (Teflon) ndi mtundu wa zinthu zotsutsana ndi kuipitsa komanso zotsutsana ndi kuipitsa zomwe zimagwiritsidwa ntchito pamagetsi ndi mafakitale a petrochemical. Komabe, mavuto otsatirawa ayenera kuganiziridwa kwambiri pamenePTFE yolumikizidwapayipichingwecho chimalumikizidwa, apo ayi moyo wa ntchito ndi chitetezo cha payipi yolumikizidwa ndi PTFE zidzakhudzidwa.

1. Poyeretsa chogwirira ntchito, n'koletsedwa kuwononga chitsulo choyambira. N'koletsedwa kugunda arc pa chitsulo choyambira panthawi yowotcherera.

2. Mu gawo la fillet ya fillet weld, kutalika kwa fillet weld kuyenera kukhala kokulirapo kuposa 5mm, ngodya yolozera iyenera kukhala yokulirapo kuposa kapena yofanana ndi 3mm, ndipo ngodya yamkati iyenera kukhala yokulirapo kuposa kapena yofanana ndi 10mm.

3. Mukalumikiza chipolopolo cha chitoliro cha PTFE, ndi bwino kugwiritsa ntchito njira yolumikizira yolumikizira matako mbali zonse ziwiri. Izi zimafuna luso la akatswiri a ogwira ntchito athu, cholumikiziracho chiyenera kukhala chathyathyathya (chosalala kapena chosalala), chopanda ma pores, cholumikizira cholumikizira ndi slag, ndipo kutalika kwa cholumikiziracho sikuyenera kupitirira 2mm. Pambuyo polumikiza, kufalikira komwe kumachitika chifukwa cha cholumikiziracho kuyenera kuchotsedwa kwathunthu.

4. Kuwotcherera kosalekeza kuyenera kugwiritsidwa ntchito powotcherera chitoliro chokhala ndi PTFE, ndipo msoko wowotcherera usakhale ndi ming'alu kapena kudula kosalekeza. Zofufuza Zofanana:payipi ya PTFE yoluka, payipi yozungulira ya PTFE

Polytetrafluoroethylene (PTFE) ndi imodzi mwa mayina omwe amagwiritsidwa ntchito kwambiri a polytetrafluoroethylene. Paipi ya PTFE imagwiritsidwa ntchito mu payipi yachitsulo chosapanga dzimbiri, kotero nthawi yogwira ntchito ya payipi ndi yayitali kwambiri kuposa payipi ya rabara kapena payipi ya rabara yokutidwa ndi chitsulo chosapanga dzimbiri. Ili ndi ubwino wambiri kuposa zinthu za rabara.

Kalasi Yoyamba: Chitoliro cholunjika cha PTFE ndi zolumikizira za chitoliro

Chodziwika bwino ndi chitoliro chotayirira. Munjira imeneyi, PTFE imagwiritsidwa ntchito kutembenuza bar. Ndi yoyenera mapaipi oyendera kuthamanga kwabwinobwino komanso kuthamanga kwabwino (monga mapaipi atatu oyeretsera zinyalala, ndi zina zotero), ndipo sayenera kugwiritsidwa ntchito papaipi yokhala ndi katundu (monga malo olowera ndi otulutsira pampu ndi mapaipi omwe angapangitse kuthamanga kwamphamvu chifukwa cha kutsika kapena kuzizira mwadzidzidzi).

Mafotokozedwe a m'mimba mwake: dn25-500mm

Kutentha kwa ntchito: - 40-180oc

Kuthamanga kwa ntchito: 1.6Mpa

Kalasi Yachiwiri: Chitoliro cholunjika cha PTFE cholumikizidwa bwino komanso cholumikizira mapaipi

Amadziwika kuti chitoliro cholimba chokulungidwa ndi waya wachitsulo.

Njira Yopangira: Choyamba, zigawo zingapo za filimu ya PTFE zimakulungidwa pa nkhungu, kenako waya wachitsulo (Ø 0.5-1mm) umakulungidwa mozungulira pa filimu ya PTFE, kenako zigawo zingapo za filimu yopyapyala ya PTFE zimakulungidwa kunja kwa waya wachitsulo, ndipo pamapeto pake zimakulungidwa mu uvuni kuti zipangidwe. Khoma lamkati la chitoliro cholumikizidwa ndi PTFE chopangidwa ndi njirayi ndi losalala, ndipo khoma lakunja ndi lozungulira chifukwa cha kuchuluka ndi mphamvu yotanuka ya waya wachitsulo.

Malo pakati pa khoma lakunja la chitoliro cholumikizidwa ndi PTFE ndi khoma lamkati la chitoliro chachitsulo amadzazidwa ndi utomoni (popanda mpweya wotsalira). Utomoni wodzaza ukhoza kumangiriridwa mwamphamvu ku chitoliro chachitsulo. Nthawi yomweyo, ukhoza kumangiriridwa mwamphamvu pakhoma lakunja la cholumikizira chozungulira cha PTFE. Utomoni wodzazidwa ukatha, chipolopolo chozungulira chimapangidwa chomwe chimatsekedwa ndi chipolopolo chakunja cha khoma la cholumikizira. Kapangidwe kameneka kakufanana ndi kuphatikiza kwa nati ndi bolt. Kumbali imodzi, kumatha kuchepetsa bwino ndikubwezera kukula kwa kutentha ndi kupindika kozizira kwa PTFE; kumbali ina, kuuma kwa waya wachitsulo kumatha kusintha kwambiri kukana kwa PTFE.

Mafotokozedwe a m'mimba mwake: dn25-200 mm

Kutentha kogwira ntchito: - 50-180oc

Kuthamanga kwa ntchito: 0.5-1.6mpa

Mtundu wachitatu: Chitoliro cha PTFE chokanikiza (chofinya) chokhala ndi chitoliro cholunjika bwino

Chodziwika bwino kuti chitoliro cholunjika chopindika (chofinyira), chimagwiritsidwa ntchito kwambiri m'maiko otukuka m'zaka za m'ma 1990.

Njira Yopangira: Choyamba, ufa wa PTFE wochokera kunja umagwiritsidwa ntchito kukankhira (kutulutsa) chitoliro, kenako umakakamizika kulowa mu chitoliro chachitsulo chosasunthika (m'mimba mwake wakunja kwa chitolirocho ndi wokulirapo pang'ono kuposa m'mimba mwake wamkati wa chitoliro chachitsulo ndi 1.5-2mm) kuti upange chingwe cholimba chosasunthika. Pofuna kuthetsa kupanikizika, umayikidwa mu uvuni ndikutenthedwa mpaka 180oC kuti uchiritsidwe kutentha kosalekeza, kuti ugwiritsidwe ntchito kutentha kochepera 180oC. Nthawi yomweyo, kankhirani (finyani) shaft ya chitolirocho

Mphamvu yokoka ndi yabwino kuposa ya chubu cholumikizira. Chitolirocho chili ndi mphamvu yolimbana ndi kupanikizika kwabwino ndi koipa.

Kusiyana pakati pa PTFE lining ndi rabara lining

Kupaka tetrafluoroethylene kumagwiritsidwa ntchito ndi kukana dzimbiri kwa fluorine, kukana kutentha kwambiri, kukana asidi ndi alkali mwamphamvu, kumamatira bwino kwambiri, kukhala nthawi yayitali komanso kukana kulowa mkati mwamphamvu. Kupopera tetrafluoroethylene yonse ndi ntchito yapamwamba kwambiri, kodi njira yake imayenda bwanji? 1. Musanapopere, pamwamba pake pamafunika kupukutidwa ndi mchenga ndikuphwanyidwa, ndipo wosanjikiza wapadera umapoperedwa. 2. Kenako ufa wa fluoroplastic umayikidwa ndi zida zamagetsi zamagetsi, ndikulowetsedwa mofanana pamwamba pa chogwirira ntchito pansi pa mphamvu yamagetsi. 3. Pambuyo pophika kutentha kwambiri, tinthu ta clinker timasungunuka kukhala wosanjikiza wokhuthala, womwe umalumikizidwa mwamphamvu pamwamba pa chogwirira ntchito. Mwachitsanzo, filimu yophimba ya 1 mm yokhuthala iyeneranso kupoperedwa ndikuphikidwa mobwerezabwereza kwa nthawi 5-6. Nthawi zambiri, makulidwe apamwamba amatha kupoperedwa mpaka 2mm. PTFE lining ndi ukadaulo womwe umagwiritsidwa ntchito kwambiri pakadali pano. Imagwiritsa ntchito mokwanira kukana dzimbiri kwa fluorine, kuyera kwambiri, ukhondo, kusamata, kusanyowa, kudzipaka mafuta, kukana kuvala, kukana kutentha kwambiri komanso kotsika, kutchinjiriza, ndi zina zotero. Pakupanga, mphamvu yake ndi mphamvu yake zimasinthidwa nthawi zonse kuti zigwirizane ndi momwe zimakhalira kuti zigwirizane. Mkati mwa rabara umatchedwanso kuti mkati mwa rabara. Ndiko kumamatira mbale ya rabara yokonzedwa pamwamba pa chitsulo ndi zomatira kuti ilekanitse pakati pa zinthu zowononga ndi matrix yachitsulo kuti iteteze. Rabala yachilengedwe ndi rabala yopangidwa imagwiritsidwa ntchito popanga mkati. Rabala yambiri yomwe imagwiritsidwa ntchito popanga zida zamakemikolo ndi rabala yachilengedwe. Gawo lalikulu la rabala yachilengedwe ndi cis polymer ya isoprene, yomwe imasungunuka powonjezera sulfure. Rabala yosungunuka imakhala ndi kukana kutentha ndi mphamvu zamakanika. Ikhoza kugawidwa m'mitundu itatu ya rabala yofewa, rabala yolimba theka ndi rabala yolimba. Rabala yolimba imakhala ndi kukana dzimbiri bwino, kukana ukalamba komanso mphamvu yolimba yolumikizana ndi chitsulo. Rabala yofewa imakhala ndi kukana kuzizira bwino, kukana kutentha ndi kukana kukhudza, ndipo imakhala ndi kusinthasintha kwina; rabala yolimba theka ili pakati pa ziwiri. Kuwonjezera pa ma oxidant amphamvu ndi zosungunulira zina, mphira wolimba umatha kupirira dzimbiri la ma inorganic acid ambiri, ma organic acid, ma alkali, mchere ndi ma alcohols. Chifukwa chake, mphira wolimba umagwiritsidwa ntchito ngati chinthu chachikulu choletsa dzimbiri chomwe sichili chachitsulo. Mphira wosungunuka ukhoza kugawidwa m'magulu awiri: mphira wosungunuka kale, mphira wosungunuka bwino wa madzi otentha, mphira wosungunuka bwino komanso mphira wachilengedwe wosungunuka. Mphira wosungunuka kale umagwiritsidwa ntchito mu zida zazikulu zophikira.