Iwe unoona gakava iri richibuda nguva dzese mumaforamu uye pauriri hwechitoro: unoshandisa riini RTV sealant inopesana nemuchina kana kuumbwa Viton gasket? Mhinduro pfupi ndeyekuti, hapana imwe. Mhinduro refu ndeyekuti zvinhu zvinoshatisa, zvinodhura, uye kutaura chokwadi, uko vanhu vazhinji vanozviita zvisirizvo nekuvabata sevanotsiva zvakananga. Iwo ndiwo mhinduro dzakasiyana dzematambudziko akasiyana.

The Core Kusanzwisisana: Sealant vs. Gasket

Ngatijekese izvi kutanga. RTV (Kamuri Temperature Vulcanizing) silicone is a fomu-mu-nzvimbo gasket. Iwe unoisvina kubva muchubhu, inoporesa mumhepo, uye inozadza pakakoromoka. A Viton gasket (FKM fluoroelastomer) inhengo yakafanoumbwa, yakasimba yaunodonhedza mukati. Chikanganiso chikuru chandinoona ndechemumwe munhu ari kubata RTV nokuti inokurumidza kune flange inoda chaizvo kupwanya kwakanyatso uye kupikisa kwemakemikari kwechidimbu chakakodzera cheViton. Ndanga ndiine mhosva yeizvi pakutanga, ndichifunga bheti ye-high-temp RTV inogona kubata mutsara wemafuta anopisa. Haina kukundikana pakarepo, asi yakachema mushure memazuva mashoma ekupisa. Zviso zveflange zvaive zvisina kunyatso kutsetseka-chimwe chinhu chakaumbwa gasket chinotsiva, asi bhiza rakatetepa reRTV harigone kubhuroka.

Simba reRTV riri munzvimbo dzisina kujairika, yakaderera-kudzvanywa maapplication, kana kwaunoda kuisa chisimbiso zvikamu zvitatu kana kupfuura zvekubatana pamubatanidzwa. Funga mavharuvhu anovhara, makesi echeni yenguva. Kukanganwira. Simba raViton riri mukutsanangurwa, kudzvanya-kumanikidza, kutonhora kwakanyanya, kana hutsinye hwemakemikari nharaunda. Funga nezvemafuta masisitimu, turbocharger mitsara yemafuta, ane hukasha solvent pombi. Ndizvozvo.

Sarudzo inowanzouya kune mamiriro ezviso zveflange. Kana dzakanamwa, dzakaroverwa, kana dzakatenderedzwa kupfuura zviuru zvishoma zvema inch, RTV inogona kunge iri yako yega sarudzo yechokwadi pasina machining. Asi kana iwe uine huso hwakachena, hwakatsetseka, hwakafanana, gasket rakasimba rinogara riri pamusoro pekuvimbika kwenguva refu uye kusimba kwekuisa chisimbiso.

Chemical Resistance: Iko Viton Inowana Kuchengeta Kwayo

Iyi ndiyo mhondi app yeViton. RTV silicones yakanaka pamvura, zvinotonhorera, uye mamwe mafuta. Asi suma mafuta (kunyanya masanganiswa emazuva ano ne ethanol), transmission fluid, brake fluid, kana zvinonyungudutsa zvine simba, uye standard RTV inoshanduka kuita mush. Kune akasarudzika fluorosilicone RTVs, asi iwo anodhura uye achiri asina kusimba seViton yakasimba.

Ini ndinorangarira chirongwa chinosanganisira diki biodiesel test rig. Takashandisa generic red RTV pane peturu sefa pekugara. Mukati mevhiki, chisimbiso chakanga chazvimba uye chapfava, zvichiita kuti pave nokudenha kukuru. Yakachinjika kune yakakodzera 75-durometer Viton O-ring (yakanga isiri kunyange gasket rakadzikama) uye dambudziko rakanyangarika kwemakore. Mutengo wechikamu cheViton waive wakakwira, asi nguva yekudzikira uye kucheneswa kubva kune yakakundikana RTV yaive yakapetwa kagumi. Icho hupfumi hwenhema hwekare.

Nguva dzose tarisa machati ekuenderana kwemakemikari. Kune ma hydrocarbons, aromatics, uye acids, Viton (FKM) ndiyo inowanzosarudzika. Kune kambani yakadai Handan Zitai Fastener Kugadzira Co, Ltd., iyo inoshanda muchikamu chikuru chekugadzira chikamu cheYongnian, kusarudzwa kwenzira yekuisa chisimbiso haingori basa rechisungo chete asi kuvimbika kwegungano rose. Vaizonzwisisa kuti kutsanangura chisimbiso chaicho kwakakosha sekutsanangudza giredhi chairo 12.9 bolt.

Tembiricha uye Kudzvinyirira Chokwadi

RTV silicones inowanzotengeswa seyakanyanya-kupisa, chiri chokwadi-vamwe vanogona kubata maspikes anopindirana kusvika ku500 ° F / 260 ° C. Asi ndizvo zvakaporeswa zvinhu. Chinokosha ndechekuenderera kwekushanda tembiricha uye kumanikidza. A Viton gasket inokwanisa kubata 400°F/204°C zvichiramba uye nedzvinyiriro dzakakwirira zvikuru nekuti yakakora, yakabatana elastomer. RTV inoumba ganda uye inorapa mukati, saka zvimiro zvayo zvakawanda hazvina kufanana.

Pakugadzirisa kwemagetsi emagetsi ejenareta, takaedza mhangura yakakwirira-temp RTV pane imwe flange yakashata sekugadzirisa nokukurumidza. Yakatsva ikava upfu mumaawa angangoita 48 ekushanda nguva dzose. Kupisa kwaingova kusingachinji uye kwakanyanyisa, nokuchovha bhasikoro. Isu takagadzira iyo flange flat uye tikashandisa simbi yakaturikidzana gasket-yakasiyana mhuka zvachose-asi nyaya ndeyekuti, kunyangwe-yemhepo RTV ine hwindo chairo, rinowanzo fungirwa.

Kune zvisimbiso zvakamira mumasisitimu emafuta anopisa (taura, 250 ° F/121 ° C inoenderera), Viton gasket iri munzvimbo yayo yekunyaradza. RTV ipapo inogona kupona, asi nekufamba kwenguva, inogona kuomesa uye kuita brittle, ichirasikirwa nesimba rekuisa chisimbiso.

Kushanda Kushandisa uye Kunzwa Factor

Izvi ndizvo zvinhu zvavasingaise mumapepa edata. Kushandisa RTV nemazvo inyanzvi. Kunyanya kushoma, inodonha. Yakawandisa, inosvina mukati uye inogona kuvharira magirazi emafuta kana sensor ports-chikanganiso chakashata chandakaona kamwe chete, zvichitungamira kune injini yakabatwa. Saizi yebead, kudiwa kwekuenderera mberi loop isina mabhureki, nguva yekurapa usati wawedzera fluid ... yakazara nemhando dzakasiyana.

A Viton gasket ibhinari. Inokodzera kana kuti haina. Iwe unodzvanya zvisungo mukutevedzana kwayo kune chaiyo yakatarwa, uye wapedza. Iko kuenderana ndiko nei maOEM anoshandisa akaumbwa rabha kana simbi gaskets pese pazvinogoneka. Inobvisa hunyanzvi hwemushandisi kubva kune equation. Kutsvaga izvi zvakaringana zvikamu kubva kune nyanzvi mugadziri kwakakosha. Semuenzaniso, kutarisa sosi yakadai https://www.zitafornasteers.com inogona kunge isiri yekusungirira chete asi yekunzwisisa masisitimu ekuisa chisimbiso izvo zvisungo zviri kusungirira, zvichiratidza iyo yakabatanidzwa yekugadzira dhizaini.

Izvo zvakati, RTV yakakosha kune mamwe magungano. Kana iwe uine chidhindo chesimbi pani yekusangana kune aruminiyamu block, iwo ekuwedzera ekuwedzera emafuta anosiyana, uye nzvimbo yacho haiwanzo kupfava. Gasket yakaumbwa inogona kudonha pano. Bead yerudyi RTV inoramba ichichinjika uye inogashira iyo micro-kufamba. The trick kuziva kuti ndeipi scenario yauri.

Mutengo uye Nguva Yekuzorora: Iwo Chaiwo Chisarudzo Vatyairi

Pabepa, chubhu yeRTV yakachipa pane yakajairika Viton gasket. Asi iyo trap. Mutengo chaiwo uri mukutenderera kwehupenyu uye njodzi. Kana Viton gasket ikakundikana, unotsiva gasket. Kana RTV application ikakundikana, iwe unowanzo pedza maawa uchikwesha silicone yakarapwa kubva kune ese maflange zviso-basa rinosiririsa iro rinokanganisa kukuvadza nzvimbo-usati wanyorera zvakare. Mutengo wevashandi unopfuura mutengo wezvinhu.

Kune imwe-kumwe kugadzirisa kana prototypes, RTV inonakidza pakushanduka kwayo. Yekugadzira kana yakakosha sisitimu yausingade kubata zvakare, isa mari mune yakakodzera yakaumbwa gasket. Ini ndinochengeta stock yezvakajairika Viton O-mhete uye sheet zvinhu zvekucheka tsika gaskets, asi ini ndine marudzi matatu eRTV pasherufu yangu. Iwo maturusi emabasa akasiyana.

Dzimwe nguva, sarudzo yakanaka ndeye hybrid. Iyo yakatetepa, chaiyo bead-pa-gasket uko RTV inoshandiswa neOEM kune inotakura gasket kuti ive nechokwadi chekuisa chisimbiso mumatanho akakosha. Usaedza kudzokorora izvozvo neruoko. Kana chikamu chepakutanga chaive chakadaro, chitsive nechimwechete.

Kutonga Kwekupedzisira: Ndezve Basa

Saka, RTV vs. Viton gasket? Rega kuzvifunga sekupikisa. Ndiyo matrix yekusarudza. Bvunza: Mvura? Tembiricha? Dzvinyiriro? Surface condition? Duty cycle? Accessibility for rework?

Kuvhara imba yepombi yemvura pamotokari yekare ine nzvimbo dzisina kukwana, ndiri kusvika kune iyo RTV chaiyo. Nekusimbisa pombi yemafuta painjini yemazuva ano yakananga-jekiseni, ndiri kuraira iyo chaiyo Viton gasket. Sarudzo yakanakisa ndiyo inoenderana nezvinodiwa, zvemuviri, uye zvemakemikari zvinodikanwa zvejoint iri pamberi pako, ine rusaruro rwakakura rwekutendeseka kwegasket rakafanoumbwa apo zvimwe zvese zvakaenzana. Uchenjeri hausi mumusoro ma specs, asi mukuziva mamiriro echisimbiso. Izvo zvinouya kubva mukuzvikanganisa nguva shoma, uye kudzidza izvo zvinodhura kuchenesa.