The albarkatun kasa naFarashin PTFEsuna da nasu samuwa zazzabi da ƙimar kewayon matsi na aiki.Yawancin gaskets ba za a iya amfani da su don matsanancin zafin jiki da matsananciyar aiki ba.Lokacin zabar gasket, yakamata a fara karbe shi bisa ga zafin aiki na gasket, ainihin matsi na aiki, da ƙimar Pr.
The albarkatun kasa naFarashin PTFEsuna da nasu samuwa zazzabi da ƙimar kewayon matsi na aiki.Yawancin gaskets ba za a iya amfani da su don matsanancin zafin jiki da matsananciyar aiki ba.Lokacin zabar gasket, yakamata a fara karbe shi bisa ga zafin aiki na gasket, ainihin matsi na aiki, da ƙimar Pr.
The albarkatun kasa na PTFE gaskets dole ne su kasance masu juriya ga lalata sinadarai da lalata ta jiki.Ya kamata a yi amfani da gaskets da suka dace bisa ga ainihin nau'ikan kayan aiki da halayen lalata, sannan a yi la'akari da juriya na lalata kayan gas ɗin.The hydrodynamic lalata juriya ana nuna gaba ɗaya ta karuwa a cikin kauri da net nauyi na gasket abu bayan ruwa infiltration.Ga gaskets da ke taɓa kayan da ba na filastik ba, kiyaye ƙimar haɓakar kauri mai kyau na kayan gasket yana da fa'ida ga haɓaka aikin rufewa a ƙarƙashin yanayin tabbatar da sauran kaddarorin.
The creep shakatawa kudi na PTFE gasket ne key siga ga qualitative bincike na wasan kwaikwayon na gasket abu.Yana nuna ikon kayan gasket don tsayayya da shakatawa na damuwa da nakasar rarrafe.na gaba ɗaya.Karamin yanayin shakatawa mai raɗaɗi, mafi girman damuwa na ciki yayin aiki.Mafi kyawun aikin rufewa shine ga gaskets marasa asbestos.Annashuwa mai raɗaɗi shine maɓalli na dalilin zubar da madauki a lokacin zagayowar aiki.Yana taka tasirin yanke shawara akan rayuwar sabis na haɗin.The shrinkage yi na PTFE gasket nuna ductility ko roba nakasawa na gasket a karkashin sakamakon lokacin load.Don gyara ga gazawa daban-daban na farfajiyar flange.Bi da bi, aikin hana yabo.
Gabaɗaya magana, yawancin ayyukan raguwar gaskets marasa asbestos ana iya la'akari da ƙa'idodin rufewa.Idan aka kwatanta da haɓakawa, aikin juriya shine mafi mahimmancin ƙimar ƙima.A resilience yi yana nufin ductility diyya na gasket, wanda zai iya bi rabuwa da flange saboda zafin jiki ko inji kayan aiki lodi don kula da hatimi.Ayyukan gasket na PTFE shine babban aikin ingancin ingancin gasket, kuma yawan zubar da ruwa shine darajar fihirisar gani.Dangane da ƙimar ma'aunin ƙima, ƙarfin rufewa na gasket na iya ƙididdigewa da kwatantawa.Adadin yayyo shine ainihin ma'aunin da yakamata ayi la'akari lokacin zabar gaskets.
Abubuwa 4 da ya kamata a damu yayin shigar da Gasket na PTFE
1. Layin rufewa ko ɗaga saman hatimin gasket na PTFE dole ne ya lalace.Hatimin gasket na PTFE a cikin kallon shirin na iya amfani da ramukan ciki na hagu da dama.The sealing yi na PTFE gasket hatimi na na'ura mai aiki da karfin ruwa inji ne yafi dogara a kan shaft ko rami.Layin leɓe mai dacewa da kyau dole ne ya kasance da hankali sosai a cikin dukkan tsarin shigarwa, sufuri, da ajiya.Wannan bangare an yi shi da graphite mai laushi da juriya mai tsafta, fiber sinadarai, roba, da filastik wanda ke da juriya ga lalata, yawan zafin jiki da tsufa.Kwamitin rufewa da sauran irin waɗannan abubuwa masu rauni sun haɗa da kayan, don haka da zarar sun lalace, zai haifar da babban ɓoyayyiyar haɗari ga ɓangaren rufewa.
2. Lokacin shigar da hatimin gasket na PTFE, dole ne mu yi taka tsantsan, kuma dole ne a aiwatar da tsarin shigarwa a hankali.A yayin duk aikin shigarwa, kar a tilasta shigarwa tare da matsayi mai girma, wanda zai sa kowa ya rufe gasket na PTFE.An lalata tsarin kayan aikin farko na farko.
3. Dole ne shigarwa na PTFE gasket like dole ne ya dace da daidaito da daidaituwa.A lokacin da installing, sanya PTFE gasket hatimi a kan matsayi na makale lebe surface (ko m tashe surface) don kauce wa tsarin software aiki A lokacin da dukan tsari, saboda canji (misali, karuwa) na ta yanayin aiki, da gazawar sa. ta micro-leakage ya faru.Wajibi ne a ci gaba da lura da yin aiki mai kyau a mataki na gaba na hatimin gasket na PTFE.
4. A PTFE gasket yana da m yi, zafi juriya, lalata juriya, wadanda ba sanda, kai lubricating, electrochemical yi, kuma sosai low gogayya juriya.
Kamar yadda roba kayayyakin, modified PTFE gaskets za a iya sanya a cikin polytetrafluoroethylene bututu, sanduna, belts, faranti, filastik fina-finai, da dai sauransu An kullum amfani da lalata-resistant bututu, utensils, farashinsa, bawuloli da su Control radar ganewa, high-mita sadarwa. kayan aiki, kayan sadarwa mara waya, da sauransu.
Duk abubuwan da za su iya ɗaukar zafin ƙima na PTFE ana ƙara su zuwa gaskat tetrafluoroethylene da aka gyara.Nau'in masu cikawa sun haɗa da fiber gilashi, kayan ƙarfe, ƙarfe mai ƙarfe oxides, graphite mai tsabta, molybdenum disulfide, fiber fiber mai laushi, fim ɗin Polyimide, da sauransu, ana iya haɓaka aikin kayan aikin injin sa sosai.Bugu da ƙari, za a iya kiyaye sauran kaddarorin PTFE, kuma juriya na lalacewa da ƙimar PV za a iya ƙara ta sau 1000.
Lokacin aikawa: Agusta-17-2020