I-RTV vs Viton gasket: ukukhetha okungcono kakhulu? 

Uyabona le nkulumompikiswano iqhamuka ngaso sonke isikhathi ezinkundleni nasesitezi sesitolo: uyisebenzisa nini i-RTV sealant uma iqhathaniswa ne-Viton gasket eyenziwe ngomshini noma ebunjiwe? Impendulo emfushane ithi, ayikho. Impendulo ende yilapho izinto ziba zimbi, zibiza, futhi ngokungagwegwesi, lapho abantu abaningi benza iphutha ngokuzithatha njengezibambeli eziqondile. Ziyizixazululo ezihlukene ngokuyisisekelo zezinkinga ezahlukene.

Ukungaqondi Okubalulekile: I-Sealant vs. Gasket

Ake sikusule lokhu kuqala. I-RTV (I-Room Temperature Vulcanizing) i-silicone iyi-a ifomu-in-place gasket. Uyikhama iphume epayipini, iyelapha emoyeni, ivale isikhala. A I-Viton gasket (I-FKM fluoroelastomer) isakhi esakheke ngaphambili, esiqinile ozifaka kuso. Iphutha elikhulu engilibonayo ukuthi othile obambe i-RTV ngoba ishesha i-flange edinga ngempela ukuchotshozwa okunembile kanye nokumelana namakhemikhali kwesiqephu esifanelekile se-Viton. Ngibe necala lalokhu kusenesikhathi, ngicabanga ukuthi ubuhlalu be-RTV yezinga eliphezulu bungakwazi ukuphatha ulayini wamafutha ashisayo. Ayizange yehluleke ngokushesha, kodwa yakhala ngemva kwemijikelezo embalwa yokushisa. Ubuso be-flange babungesicaba ngokuphelele-into i-gasket ebunjiwe inxephezela, kodwa ubuhlalu obuncane be-RTV abukwazi ukuvala ibhuloho.

Amandla e-RTV asendaweni engajwayelekile, izinhlelo zokusebenza ezinengcindezi ephansi, noma lapho udinga ukuhlanganisa izingxenye ezintathu noma ngaphezulu zokukhwelana endaweni ehlangene. Cabanga ngesembozo se-valve, amakesi ochungechunge lwesikhathi. Kuyathethelela. Amandla kaViton asendaweni echaziwe, enengcindezi ephezulu, izinga lokushisa eliphezulu, noma endaweni yamakhemikhali anolaka. Cabanga ngamasistimu kaphethiloli, imigqa kawoyela ye-turbocharger, amaphampu ancibilikisayo anolaka. Inembile.

Ukukhetha kuvame ukwehlela esimweni sobuso be-flange. Uma zikhohliwe, ziboshiwe, noma zisontekile ngaphezu kwezinkulungwane ezimbalwa zamayintshi, i-RTV ingaba ukuphela kwenketho yakho enengqondo ngaphandle komshini. Kodwa uma unobuso obuhlanzekile, obuyisicaba, obuhambisanayo, i-gasket eqinile ihlale iphakeme ngokwethembeka kwesikhathi eside kanye nokucindezela okungaguquki kokuvala.

Ukumelana Namakhemikhali: Lapho I-Viton Ithola Igcina

Lolu uhlelo lokusebenza olubulalayo lweViton. Ama-silicone e-RTV alungile ngokumelene namanzi, izipholile, namanye amafutha. Kodwa ngenisa izinto zokubasa (ikakhulukazi izingxube zesimanje ne-ethanol), uketshezi oludluliswayo, uketshezi lwamabhuleki, noma izincibilikisi ezinamandla, futhi i-RTV evamile iphenduka ibe amakhowe. Kukhona ama-RTV akhethekile e-fluorosilicone, kodwa anentengo futhi awaqinile njengeViton eqinile.

Ngikhumbula iphrojekthi ehilela i-rig encane yokuhlola i-biodiesel. Sisebenzise i-RTV ebomvu ejwayelekile endaweni yokuhlunga uphethiloli. Phakathi nesonto, uphawu lwase luvuvukele futhi seluthamba, kwadala ukuvuza okukhulu. Ishintshele ku-75-durometer efanele i-Viton O-ring (yayingeyona ngisho i-gasket eyisicaba) futhi inkinga yanyamalala iminyaka. Izindleko zengxenye ye-Viton zaziphakeme, kodwa isikhathi sokuphumula nokuhlanza kusukela ku-RTV ehlulekile kwakuphindwe kashumi. Umnotho wamanga wakudala.

Njalo hlola amashadi ahambisana namakhemikhali. Kuma-hydrocarbon, ama-aromatics, nama-acids, i-Viton (FKM) ivamise ukuzenzakalelayo. Okwenkampani efana I-Handan Zitai Fetesser Comment Co, Ltd., esebenza engxenyeni enkulu yokukhiqiza yengxenye evamile ye-Yongnian, ukukhetha kwendlela yokuvala ayithinti nje umsebenzi wesibophelelo kodwa ubuqotho bayo yonke inhlangano. Bazoqonda ukuthi ukucacisa uphawu olufanele kubaluleke kakhulu njengokucacisa ibhawudi elifanele lebanga 12.9.

Izimo Zezinga Lokushisa Nengcindezi

Ama-silicone e-RTV avame ukumakethwa njengamazinga okushisa aphezulu, okuyiqiniso—amanye angakwazi ukuphatha ama-spikes ngezikhathi ezithile aze afike ku-500°F/260°C. Kodwa lokho kuyizinto eziphulukisiwe. Okubalulekile yizinga lokushisa eliqhubekayo lokusebenza nokucindezela. I-Viton gasket ingakwazi ukuphatha u-400°F/204°C ngokuqhubekayo nezingcindezi eziphakeme kakhulu ngenxa yokuthi iyi-elastomer ecinene, exhumene. I-RTV yakha isikhumba futhi yelapha ngaphakathi, ngakho izakhiwo zayo eziningi azifani.

Ekulungiseni kokukhipha amandla okuningana kwejeneretha, sizame i-RTV yethusi yezinga eliphezulu lokushisa ku-flange esonte kancane njengendlela yokulungisa ngokushesha. Yasha yaphenduka impushana cishe emahoreni angama-48 esebenza ngokuqhubekayo. Ukushisa bekuvele kungashintshi futhi kuphezulu kakhulu, nokuhamba ngebhayisikili. Salungisa iflethi le-flange futhi sasebenzisa i-gasket yensimbi enezingqimba—isilwane esihlukile ngokuphelele—kodwa iphuzu liwukuthi, ngisho ne-RTV yezinga eliphezulu inefasitela elicacile, elivame ukulinganiswa ngokweqile.

Ukuze uthole izimpawu ezimile ezinhlelweni zikawoyela oshisayo (yithi, 250°F/121°C ngokuqhubekayo), i-Viton gasket isendaweni yayo yokunethezeka. I-RTV lapho ingase isinde, kodwa ngokuhamba kwesikhathi, ingaba lukhuni futhi ibe brittle, ilahlekelwe amandla ayo okubeka uphawu.

Isicelo Esisebenzayo kanye Nesici Sokuzizwa

Lezi yizinto abangazifaki kuma-data sheet. Ukusebenzisa i-RTV ngendlela efanele kuwubuciko. Kuncane kakhulu, kuyavuza. Kakhulu, icindezela ngaphakathi futhi ingavimba amagalari kawoyela noma izimbobo zezinzwa—iphutha elikhulu engalibona kanye, eliholela enjinini ebanjiwe. Usayizi wobuhlalu, isidingo seluphu eqhubekayo ngaphandle kokunqamuka, isikhathi sokwelapha ngaphambi kokwengeza uketshezi... kugcwele okuguquguqukayo.

I-Viton gasket inambambili. Iyalingana noma ayifani. Ufaka ama-fasteners ngokulandelana okulungile ku-spec efanele, futhi usuqedile. Ukungaguquguquki yingakho ama-OEM esebenzisa irabha ebunjiwe noma ama-gaskets ensimbi lapho kungenzeka khona. Isusa ikhono lomsebenzisi ku-equation. Ukuthola lezi zingxenye ezinembayo kumkhiqizi okhethekile kubalulekile. Ngokwesibonelo, ukuhlola insiza efana https://www.zitaifasteners.com kungase kungabi nje okokubopha kodwa kube okokuqonda izinhlelo zokuvala lezo zibophelelo ezibambayo, okugqamisa imvelo edidiyelwe yomklamo wokuhlanganisa.

Sekushiwo lokho, i-RTV ibalulekile emihlanganweni ethile. Uma unesitembu sikawoyela epanini lokuhlangana nebhulokhi ye-aluminium, amazinga okunweba okushisayo ayahluka, futhi izindawo ezingaphezulu azivamile ukucaba. I-gasket eyakhelwe ngaphakathi ingavuza lapha. Ubuhlalu be-RTV efanele buhlala buguquguquka futhi bukwamukela lokho kunyakaza okuncane. Iqhinga ukwazi ukuthi ukusiphi isimo.

Izindleko Nesikhathi Sokuphumula: Abashayeli Besinqumo Sangempela

Ephepheni, ishubhu le-RTV ishibhile kune-Viton gasket yangokwezifiso. Kodwa lokho kuwugibe. Izindleko zangempela zikumjikelezo wempilo ephelele kanye nengozi. Uma i-Viton gasket ihluleka, ubuyisela i-gasket. Uma uhlelo lwe-RTV lwehluleka, uvamise ukuchitha amahora ukhuhla i-silicone eselashiwe kubo bobabili ubuso be-flange—umsebenzi odabukisayo obeka engcupheni yokulimaza indawo engaphezulu—ngaphambi kokuthi ufake isicelo kabusha. Izindleko zabasebenzi zincane kakhulu izindleko zempahla.

Ngokulungiswa okukodwa noma ama-prototypes, i-RTV iyamangalisa ngokuguquguquka kwayo. Ngokukhiqiza noma isistimu ebucayi ongafuni ukuyithinta futhi, tshala imali ku-gasket eyakhiwe efanele. Ngigcina isitokwe se-Viton O-rings evamile kanye nezinto zeshidi zokusika ama-gaskets angokwezifiso, kodwa futhi nginezinhlobo ezintathu ze-RTV eshalofini lami. Zingamathuluzi emisebenzi eyahlukene.

Ngezinye izikhathi, ukukhetha okungcono kakhulu yi-hybrid. I-bead-on-gasket encane, enembile lapho i-RTV isetshenziswa yi-OEM ku-gasket yenkampani yenethiwekhi ukuze kuqinisekiswe ukuvala iziteshi ezibucayi. Ungazami ukuphindaphinda lokho ngesandla. Uma ingxenye yasekuqaleni yayinjalo, yishintshe ngokufanayo.

Isinqumo Sokugcina: Simayelana Nomsebenzi

Ngakho, i-RTV vs. Viton gasket? Yeka ukucabanga ngakho njengokuqhathanisa. Kuyi-matrix yokukhetha. Buza: Uketshezi? Izinga lokushisa? Ingcindezi? Isimo sobuso? Umjikelezo womsebenzi? Ukufinyeleleka kokusebenza kabusha?

Ukuze ngivale indlu yephampu yamanzi emotweni yakudala enezindawo ezingaphelele, ngifinyelela i-RTV efanele. Ukuze ngivale i-flange yepompo likaphethiloli enjinini yomjovo oqondile yesimanjemanje, ngi-oda i-Viton gasket ethile. Inketho engcono kakhulu yileyo ehambisana nezidingo eziqondile, zomzimba, kanye nezekhemikhali zelunga eliphambi kwakho, ngokuchema okunzima ekuthembekeni kwe-gasket eyakhiwe ngaphambili lapho konke kulingana. Ukuhlakanipha akukhona ekubambeni ngekhanda ama-specs, kodwa ekuboneni umongo wophawu. Lokho kuvela ekukwenzeni okungalungile izikhathi ezimbalwa, nokufunda ukuthi izindleko zokuhlanza zinjani.