Ma gaskets a Neoprene vs. Grafoil a kutentha kwambiri? 

Chabwino, tiyeni tidutse phokoso. Ngati mukusaka izi, mwina mukuyang'ana panja lotayirira kapena mukukonzekera kumanga ndipo zonena zake zimangonena kuti gasket yotentha kwambiri. Msampha waukulu womwe aliyense amagweramo ndi kuganiza kuti mphira ndi kutentha kwambiri kumatha kupita limodzi kwa nthawi yayitali. Iwo sangakhoze. Neoprene amaponyedwa mozungulira kuti agwire ntchito yotopetsa nthawi zina, koma nthawi zambiri zimakhala zovuta kukonza zomwe zimangolephera. Grafoil? Ndilo dzina lina lomwe mumamva. Koma si zophweka mwina-kapena. Ndi za komwe mumazigwiritsa ntchito komanso momwe mumazigwiritsira ntchito, ndipo moona mtima, nthawi zina simuyenera kuzigwiritsa ntchito.

The Neoprene Illusion in Hot Systems

Ndikofunikira kuchita molunjika: kugwiritsa ntchito muyezo neoprene gaskets pa utsi weniweni wotentha kwambiri ndikupempha mavuto. Tikulankhula za zinthu zomwe mungagwiritse ntchito potengera mpweya kapena mzere wozizirira. Kukongola kwake ndi kusinthasintha komanso kusindikiza, zabwino kwa malo osakhazikika pa kutentha kwachipinda. Koma kutopa? Ngakhale makina ocheperako amagunda 250 ° C (482 ° F) mosavuta, ndipo neoprene imayamba kuumitsa ndikusweka mozungulira 120-130 ° C. Ndaziwona. Mumayikokera pansi pa turbo downpipe, imasindikiza bwino poyambira. Patatha sabata imodzi, patatha kutentha pang'ono, imasandulika kukhala diski yakuda, yakuda. Chisindikizo chapita, mumapeza kutayikira komweko, ndipo mwabwerera pansi pagalimoto.

Pali chenjezo: mitundu ina yapadera ya neoprene yotentha kwambiri imakhalapo, nthawi zambiri imakhala ndi silikoni, yovotera kwambiri. Koma muzochitika zanga, ngakhale awa ali ndi denga. Atha kukhala m'malo olumikizirana ma muffler kapena m'mphepete mwa pompopompo pomwe kutentha kumakhala kotsika, kunena kuti pansi pa 200 ° C. Koma pamutu, mapaipi, ma turbo manifolds - iwalani. Kuwonongeka kwa kutentha ndi nthawi, osati ngati. Mtengo wa gasket ndi wotsika, koma mtengo wogwira ntchitoyo kawiri ndi wokwera.

Kodi ndinamaliza kuti kuwona gasket ya neoprene ikulephera mochititsa chidwi? Galimoto ya bwenzi yokhala ndi chizolowezi chotopa. Anagwiritsa ntchito gasket ya neoprene donut pa chomangira cha v-band pafupi ndi mphaka, kuganiza kuti chiwongola dzanja chikhoza kupirira. Zinatero, kwa magawo awiri. Kutenthaku kunapangitsa kuti zinthuzo ziziyenda komanso kupanikizana mosagwirizana, zomwe zimapangitsa kuti pakhale kuphulika komanso kudontha koyipa gawo lisanayambe. Tinasinthanitsa ndi gasket yoyenera yachitsulo pamalopo. Phunziro: Kukumbukira zinthu zofunika. Neoprene imataya ikawotcha.

Grafoil: The Go-To, Koma Ndi Gripes

Zojambula za Grafoil, kapena molondola, ma graphite gaskets osinthika, ndi yankho lokhazikika pazifukwa. Amagwira kutentha mokongola - tikulankhula ntchito yosalekeza mpaka 450-500 ° C m'malo osakhala oxidizing, ngakhale nsonga zapamwamba. Amagwirizana ndi zolakwika za flange, zomwe zimapulumutsa moyo pamapangidwe akale, opindika pang'ono. Mumachitsekera pansi, chimaphwanyidwa ndikudzaza zigwa zazing'ono. Ndiwo mphamvu zawo zenizeni.

Koma ali ndi ziwanda zawozawo. Choyamba ndi kumasuka kwa zokwawa, kapena kutuluka kwazizira. M'kupita kwa nthawi, makamaka pansi pa kutentha kwakukulu ndi kutentha, graphite imatha kupanikiza pang'onopang'ono ndikuwonda. Ngati mabawuti anu sakutulutsa ma torque kapena mulibe zochapira masika, mphamvu yothina imatsika, ndipo mumatuluka. Nthawi zonse ndimalimbikitsa retorque pambuyo poyambira kutentha pang'ono ngati n'kotheka. Chachiwiri, ndipo izi ndizofunikira: sakonda kutulutsa mpweya wothamanga kwambiri. Graphite imatha kuphulika ngati pali kusiyana kwakukulu kapena kusalongosoka. Nthawi zonse ndimayang'ana nkhope za flange kuti zikhale zofanana ndisanayike.

Nkhani ina ndikusamalira. graphite yoyera ndi yofewa. Ngati mukuyika gasket ya grafoil pamtunda woyima kapena pamwamba, zingakhale zowawa kuti mukhalebe pamalo pamene mukuyamba ma bolts. Ena amabwera ndi pachimake chachitsulo chokhala ndi perforated kapena zomatira zomata, zomwe zimathandiza. Zomwe zili ndi chitsulo chosapanga dzimbiri zimakhala zolimba koma sizigwirizana. Ndi kusinthanitsa.

Oxidation ndi Factor Yoyiwalika

Pano pali zambiri zomwe amaphonya: oxidation. Mumtsinje wotulutsa mpweya wokhala ndi mpweya wambiri, graphite imatha kutulutsa pang'onopang'ono pamwamba pa 400 ° C, makamaka m'mphepete. Imasanduka phulusa la ufa, kupatulira gasket. Izi sizikhala zolephera zowopsa pamagalimoto apamsewu, koma pakugwiritsa ntchito katundu wambiri - ganizirani jenereta yomwe ikuyenda mokwanira kwa masiku - ikhoza kukhala chinthu chovala. Ndatulutsa ma gaskets a grafoil kuchokera ku nyumba za turbo zomwe zinali zowonda kwambiri m'mphepete mwamkati. Kwa malo owopsa awa, gasket yachitsulo yosanjikiza ikhoza kukhala yabwinoko.

Pamene Palibe Yankho Lolondola

Apa ndipamene zochitika zenizeni zimayambira. Pali zochitika zomwe neoprene ndi grafoil ndizosasankha bwino. Imodzi ndi yotentha kwambiri, zolumikizira zolimba kwambiri, monga pakati pa nyumba ya turbocharger ndi manifold. Apa, ma gaskets azitsulo zamitundu yambiri (MLS) ndi mfumu. Iwo samakwawa, amayendetsa bwino njinga yamoto, komanso amakana kuphulika.

Wina ndi wa ma flange okhala ndi mipata yayikulu kapena kusanja bwino. Palibe chilichonse chomwe sichingatseke mipata. Neoprene adzakhala extrude ndi kulephera; grafoil idzaphulika kapena kuphwanya mofanana. Kukonzekera ndiko kupanga makina a flange kapena kugwiritsa ntchito chinthu chokhuthala, cholimba ngati chophatikizika cha ceramic. Ndinaphunzira izi movutirapo pa chotenthetsera chotenthetsera chamoto cha mafakitale. Tinayesa pepala wandiweyani grafoil, koma flange warpage anali kupitirira 1mm. Zinawukhira nthawi yomweyo. Njira yothetsera vutoli inali kukonzanso flange ndi kugwiritsa ntchito malata achitsulo okhala ndi graphite filler—mankhwala opangidwa mwaluso kwambiri.

Nthawi zina, yankho palibe gasket konse. Makina opangidwa bwino, ophwanyika, komanso osalala azitsulo ndi zitsulo zotsutsana ndi kutentha kapena zosindikizira (monga mapepala enieni amkuwa) akhoza kukhala odalirika pamagulu ena a V-band kapena a flat-face, kuchotsa ulalo wofooka wa zinthu zoponderezedwa palimodzi.

Kupeza ndi Zowona Zothandiza

Mutha kugula ma gaskets awa kulikonse, koma mtundu umasiyana kwambiri. Grafoil yotsika mtengo ikhoza kukhala ndi zonyansa kapena kusasunthika kosagwirizana, zomwe zimatsogolera ku malo otentha ndi kulephera. Pazinthu zovuta kwambiri, ndimatsatira ma brand odziwika kapena ogulitsa omwe amapereka zofunikira. Ndikoyeneranso kulingalira dongosolo la fastener ngati gawo la njira yosindikizira. Bawuti yofooka yomwe imatambasulidwa ndi kutentha imathyola chotchinga. Ichi ndichifukwa chake pantchito yotopetsa, nthawi zambiri ndimapereka zida kuchokera kwa akatswiri omwe amamvetsetsa zomwe zimafuna kutentha, monga Malingaliro a kampani Handan Zitai Fastener Manufacturing Co., Ltd.. Amakhala ku Yongnian, malo othamanga kwambiri ku China, ndipo amapereka makampani ambiri. Kudziwa ma bolts ndi ma studs anu amachokera ku malo akuluakulu opanga omwe ali ndi maulamuliro okhwima, opezeka kudzera pa tsamba lawo https://www.zitaifasteners.com, kumatanthauza kusinthika kumodzi komwe kumadetsa nkhawa pamene gulu lonse likuwotha ndi kuzizira mobwerezabwereza.

Pansi pa sitolo, lamulo langa lodziwika bwino ndi ili: kwa nthawi zambiri kutulutsa mpweya mumsewu kumagwira ntchito pambuyo pothandizira pomwe kutentha kumakhala kocheperako (pansi pa 350 ° C), gasket yabwino kwambiri ya grafoil ndi yabwino kwambiri. Ingoyiyikani pamalo oyera, athyathyathya ndi retorque. Kwa pre-catalyst, turbo, kapena header applications, ndimatsamira pazitsulo zosanjikiza kapena zolimba zachitsulo. Neoprene? Ndimasungiramo ma ducts, zophimba, ndi chilichonse chomwe chimakhala chozizira. Ndiko kufananiza zenizeni za zinthu ndi nkhanza za dongosolo. Kutentha kwa mpweya sikusokoneza.

Pomaliza: Ndi Dongosolo, Osati Gawo Lokha

Ndiye, neoprene vs. grafoil? Sizotsutsana kwenikweni. Ndi zida za ntchito zosiyanasiyana. Neoprene ndi yotsika kutentha, yosindikiza static. Grafoil ndi yokhazikika, yosindikiza kutentha kwambiri komwe sikuli koopsa. Katswiri weniweni kusuntha ndikuzindikira cholumikizira chonse: mbiri ya kutentha, mawonekedwe a flange, mtundu wa bawuti, ndi njinga zamoto zotentha. Ndataya nthawi ndi ndalama ndikudzudzula zida za gasket pomwe vuto linali lopindika kapena mphamvu yothina yosakwanira.

Malangizo anga? Osangosankha kutengera malingaliro amtundu uliwonse. Ganizirani za malo enieni a mtsinje wa utsi, kutentha kwambiri komwe kudzawone, ndi zotsatira za kutayikira. Nthawi zina, kuwononga katatu pamtengo wapamwamba wazitsulo wamtundu wambiri wa turbo flange ndiyo njira yotsika mtengo kwambiri m'kupita kwanthawi chifukwa mumangogwira ntchitoyi kamodzi. Ndipo nthawi zonse, nthawi zonse yambani ndi malo abwino, ophwanyika ndi zomangira zoyenera kutentha. Zina zonse zimamanga pa maziko amenewo.