Mukuwona funsoli likutuluka m'mafotokozedwe kapena kuchokera kwa kasitomala, ndipo lingaliro lachangu siliri la chinthu chimodzi chakuthupi-ndizowona zenizeni zowonongeka za zomwe zimachitika mukamayika chisindikizo pakati pa zenera losuntha ndi shawa, kuyembekezera kuti lidzakhalapo kwa zaka zambiri motsutsana ndi kutentha, madzi, ndi kuponderezedwa kosalekeza. Mawu akuti "graphite" nthawi zambiri amaponyedwa mkati ngati fumbi lamatsenga, lomwe limaganiziridwa kuti likukwezedwa, koma sichoncho? Kuyambira nthawi yanga yoyika ndikuyika m'malo, zokambirana zokhazikika sizikhala za gasket yokha. Ndizokhudza dongosolo, chilengedwe, ndipo kunena zoona, kusamvetsetsana kofala pakugula.

Lonjezo la Graphite vs. On-Site Reality

Ogulitsa amakonda mphira wopangidwa ndi graphite. Zogulitsa zogulitsa nthawi zonse zimakhala za kuchepa kwa mikangano, kusindikiza bwino pansi pa kuponderezedwa, komanso moyo wautali. Ndipo mwamalingaliro, ndizomveka. Graphite ndi mafuta olimba. Mukugwiritsa ntchito mphamvu ngati chitseko cha shawa pomwe zenera kapena mapanelo amatsetsereka kapena ma pivots, kuchepetsa kukangana kwapamtunda wa rabara kumayenera kuteteza kuti zisagwe kapena kupunduka msanga. Koma apa pali hiccup yoyamba: khalidwe ndi kubalalitsidwa kwa graphite. Ndawonapo magulu omwe graphite ikuwoneka ngati ikutuluka, ndikusiya zotsalira za smudgy pa galasi pambuyo pa miyezi ingapo yogwiritsidwa ntchito, pamene mphira pansi pake amabwerera ku malo ake oyambira, kukhala ovuta kapena osasunthika. Kupeza durability? Zosawerengeka, ngati si zoipa. Sizinali graphite yomwe inalephera; chinali chigawo chomwe chinasakanizidwamo.

Ndiye pali compression set. Ichi ndiye chachikulu. Gasket imaphwanyidwa pakati pa chimango cha aluminiyamu ndi galasi lagalasi. Chosakaniza chabwino cha EPDM kapena silikoni chiyenera kubwereranso. Mumawonjezera graphite kusakaniza, ndipo imatha kusintha kukumbukira kwa polima. Ndikukumbukira pulojekiti pafupifupi zaka zitatu mmbuyomo komwe tidagwiritsa ntchito mbiri ya EPDM yopangidwa ndi graphite pamipando yamalo osambira a hotelo apamwamba. Kuyenda koyamba kunali kosangalatsa kwambiri, mwakachetechete, wosalala. Koma pambuyo pa miyezi 18 yogwiritsiridwa ntchito mosalekeza m’malo achinyezi, otentha, ma gaskets anakhazikika kosatha. Iwo sanabwerere mmbuyo. Chisindikizocho chinakhala chingwe chopyapyala, chophwanyika, ndipo tinayamba kulandira ma callbacks kuti madzi ayambe kutuluka. graphite inathandiza kuti pamwamba pake isasunthike, koma kodi inasokoneza kulimba kwa zinthuzo ndi kupanikizika kosalekeza? Zikatero, zinkaoneka choncho.

Izi zimatsogolera ku mfundo yotakata: maziko a mphira ndi mfumu. Graphite ndi chowonjezera, chosinthira. Ngati muyamba ndi EPDM yotsika kwambiri kapena kusakaniza mphira wobwezeretsanso, kuwonjezera graphite kuli ngati kuika bandeti pa nkhani yomanga. Ndimakonda kukayikira za zomwe zimangoyitanitsa ma graphite gasket osafotokoza zapakatikati, kulimba kwake (Shore A), komanso kutentha kwake komwe kumayembekezeredwa. Funso lolimba limachoka ku Kodi graphite ndiyabwino? Kodi graphiteyi imasakanizidwa ndi chiyani, ndipo ndi cholinga chotani chenicheni?

Kuwonongeka Kwachilengedwe: Si Madzi Okha

Tikamalankhula za ma gaskets osambira pawindo, 'kusamba' ndi mawu ogwira ntchito, ankhanza. Si nkhungu yofatsa. Ndi nthunzi yotentha, kuyendetsa njinga zotentha kuchokera ku galasi lozizira kupita kumadzi otentha, kukhudzana ndi mankhwala kuchokera ku sopo, ma shampoos, makamaka ochotsa laimu kapena zotsukira acidic. graphite wosanjikiza palokha akhoza kukhala pachiwopsezo. M'madera omwe ali ndi madzi olimba, mchere wa mchere (limescale) ukhoza kumangiriza ku malo opangidwa pang'ono, opaka mafuta a graphite gasket molimbika kwambiri kusiyana ndi silikoni wamba. Mumapeza kutumphuka kowawako uku kokulirakulira. M'kupita kwa nthawi, nthawi zonse zenera slide, si yosalala graphite-pa galasi kanthu kenanso; Imakoka tinthu tambiri tomwe timabisala mbali zonse ziwiri, ndikugwetsa gasket ndipo imatha kukanda njira yagalasi.

Kuwonekera kwa UV ndi wakupha wina mwakachetechete, yemwe nthawi zambiri amanyalanyaza zopangira zamkati. Koma mazenera ambiri aku bafa amapeza kuwala kwa dzuwa. EPDM yodziwika bwino ndi yoyipa kwambiri ndi UV; imasweka ndi kuononga. Silicone imagwira bwino kwambiri. Ngati graphite yanu ili m'munsi mwa UV, phindu lopaka mafuta limakhala lopanda ntchito pokhapokha zinthuzo zikangolakalaka ndikugawanika. Ndinaphunzira izi movutikira pokonzanso bafa yoyang'ana kumwera. Ma gaskets adawoneka bwino kwa chaka, kenako adapanga ming'alu yaying'ono pamilomo yowonekera. Ufa wa graphite unali udakali m’ming’aluyo, osachita chilichonse kuti chisindikizocho chigwirizane.

Ndiyeno pali kukula kwachilengedwe. Nkhungu ndi mildew. Mapangidwe a mphira amitundu ina atha kukhala malo oberekera. Zowonjezera zina, kuphatikiza mankhwala ena a graphite, zitha kuletsa izi, koma sindinawone umboni wotsimikizika wanthawi yayitali. Nthawi zambiri, kusankha kwa zinthu zopanda porous ngati silikoni yapamwamba kwambiri, yokhala ndi graphite kapena yopanda graphite, kumachita zambiri kuti ikhale yolimba m'malo omwe amakonda nkhungu pongokana pamwamba kuti spores zigwire. Kulimba kwa metric pano sikungokhala kukhulupirika kwamakina; ndi ukhondo waukhondo.

Kuyika: Nthawi Yowona

Sayansi yakuthupi yonse padziko lapansi imalephera pakuyika. Kukhazikika kwa gasket kumakonzedweratu ndi momwe amayikidwira. Pazosamba zawindo, gasket nthawi zambiri imayenera kutambasulidwa kapena kukulungidwa muzitsulo za aluminiyamu. Kuvutana kwambiri pakukhazikitsa kumayambitsa kupsinjika kosatha. Ndawonapo oyikapo akugwiritsa ntchito screwdriver kuti alowetse gasket m'malo, ndikumangirira milomo yosindikiza. Kakang'ono kakang'ono kameneka, komwe kamakhala kosinthasintha, kamakhala kong'ambika m'miyezi isanu ndi umodzi. Graphite sichithandiza pamenepo.

Kukwanira kuyenera kukhala kokwanira. Gasket yomwe ili yaying'ono kwambiri pa tchanelo idzakhala yotambasulidwa, yopyapyala m'mphepete mwa kusindikiza, ndikulephera koyambirira. Imodzi yomwe ili yaikulu kwambiri idzaunjikana, ikupanga kukakamizidwa kosagwirizana ndi njira zotayikira. Kupeza kuchokera kwa wopanga yemwe ali ndi zololera zosasinthika za extrusion ndikofunikira. Apa ndipamene mbiri ya kampani imafunikira. Mwachitsanzo, tapeza zomangira zokhazikika komanso mbiri yosindikiza kuchokera kwa wopanga ngati Malingaliro a kampani Handan Zitai Fastener Manufacturing Co., Ltd. kwa ntchito zina zomanga. Malo omwe ali ku Yongnian, gawo lalikulu kwambiri ku China, nthawi zambiri amatanthauza mwayi wopeza ukadaulo wazinthu zakuthupi ndi kupanga. Ngakhale sindinagwiritse ntchito zenizeni zawo mphira wa graphite gasket Zogulitsa, mfundoyi imagwira: wopanga yemwe ali mgulu la mafakitale nthawi zambiri amakhala ndi mphamvu zowongolera pamagulu azinthu zopangira komanso kusasinthika kwamtundu wa extrusion, zomwe zimakhudza mwachindunji kukhazikitsidwa, motero, kukhazikika kwa chisindikizocho. Webusaiti yawo, zitaifsteners.com, imasonyeza kuyang'ana pa zomangira, koma ndondomeko yopangira zigawo zolondola ndizofunikira.

Wina kukhazikitsa nuance: lubrication. Zikumveka zachipongwe-kupaka mafuta opaka mafuta. Koma kuti zikhale zolimba, kugwiritsa ntchito njira yamadzi ya sopo kapena mafuta opangira mphira oyenera pakuyika sikungakambirane. Imalepheretsa gasket kumangirira kapena kung'ambika pamene imalowa munjira. Kuwumitsa gasket ya graphite, makamaka pa tsiku lofunda, kumatha kupangitsa kuti igwire ndikumanga. Kuwonongeka komweko sikungayambitse kutayikira tsiku loyamba, koma ndi kulephera kotsimikizika.

Case Point: Kulephera Kwapamwamba Kwambiri

Ndiroleni ndifotokoze vuto linalake, lokhumudwitsa. Wothandizira anaumirira pa gasket yabwino kwambiri ya ma cubicles osambira a masewera olimbitsa thupi. Tinapatsidwa katundu wodula, wochokera kunja mphira wa graphite gasket, yotchulidwa kuti ndi yolimba kwambiri. Zinamveka bwino, zosalala, zowundana, zomwe zidasiya graphite pa zala zake. Kuyika kunayenda bwino. Mofulumira miyezi isanu ndi itatu. Malo ochitira masewera olimbitsa thupi ankagwiritsa ntchito zotsukira zokhala ndi chlorine tsiku lililonse. Ma gaskets anali atasiya kuterera, adasanduka imvi, ndipo adalimba kwambiri. Zitseko zotsetsereka zinayamba kumamatira, kenako ndikugwedezeka. Pakuchotsedwa, gaskets anali brittle; iwo anathyola m'malo mosinthasintha. Klorini anali ataukira maunyolo a polima, ndipo graphite idangokhala m'matrix owonongeka. Chizindikiro chogwira ntchito kwambiri chinalephera kuwerengera malo enieni a mankhwala. Tinawasintha ndi gasket yosavuta, yosamva mankhwala a Viton (yopanda graphite), ndipo izi zatha zaka zambiri. Phunzirolo linali lankhanza: kulimba kumatengera nkhaniyo. Graphite anathetsa kukangana, osati mankhwala kukana.

Izi zidandikakamiza kuti nthawi zonse ndipemphe, kapena ngakhale kuyesa, kuyesa kosavuta. Ngati mukudziwa zotsukira zomwe munthu womaliza adzagwiritse ntchito, yesani chitsanzo cha gasket chomwe chamira mu chotsukiracho kwa sabata. Onani ngati kutupa, kuuma, kapena kuwonongeka kwa pamwamba. Ndi sitepe yofunikira yomwe imadutsa mawu onse otsatsa kukhazikika kwa gasket.

Ndiye, Nchiyani Chimagwirira Ntchito Pamoyo Wautali?

Kutengera zolephera ndi zopambana, nayi kutenga kwanga kwanzeru. Pamalo ambiri osambira pawindo lazenera, gasket yapamwamba kwambiri, yolimba ya silikoni nthawi zambiri imaposa mphira wokhala ndi graphite yonse. kukhazikika. Kukana kwachilengedwe kwa silicone ku kutentha kwambiri, UV, ndi chinyezi ndizopambana. Kubwezeretsa kwake kwa compression ndikwabwino kwambiri. Kusamvana koyambirira ndi kusamvana; ikhoza kukhala yolimba pang'ono. Koma pawindo lopindika kapena losasunthika pafupipafupi, izi sizothandiza.

Ngati muli ndi chitseko cholemera, chotsetsereka pafupipafupi, ndiye kuti kuchepetsa mikangano ndikofunikira. Zikatero, yambitsani zinthu zofunika poyamba. Yang'anani chowonjezera cha graphite, EPDM yamtengo wapatali kapena makina opangidwa ndi thermoplastic elastomer (TPE). Onetsetsani kuti graphite ndi gawo lofunika kwambiri pamagulu, osati kungophimba pamwamba. Funsani zambiri za compression set (ASTM D395) ndi kuchuluka kwa madzi ndi mankhwala wamba. Zolembazo ziyenera kufotokoza nkhani.

Pomaliza, samalira zoyembekeza. Palibe gasket yomwe imakhala kwamuyaya. M'malo ogwiritsidwa ntchito kwambiri, mwaukali, kukonzekera kuyang'anira ndi kusinthidwa ndi gawo la mapangidwe olimba. Nthawi zina, yankho lolimba kwambiri ndikupanga dongosolo kuti gasket ikhale yotetezedwa - kutetezedwa ku UV mwachindunji ndi kupopera kolemera, kapena kusinthidwa mosavuta popanda kugwetsa mawindo onse. Cholinga sichiyenera kungokhala pa zozizwitsa graphite gasket, koma pakupanga malo okhululuka, osungika osindikizira mozungulira. Ndiko komwe kukhazikika kwenikweni, kwanthawi yayitali kumamangidwa.