Ufa wa graphite womwe umagwiritsidwa ntchito ngati ma electrode a graphite uli ndi zabwino zambiri. Komabe, momwe mungatulutsire zabwino za chinthuchi, kukwaniritsa bwino magwiridwe antchito, kuchepetsa ndalama komanso kukweza mpikisano pamsika, izi si nkhani zokha zomwe opanga graphite ayenera kuganizira, komanso mavuto omwe ogwiritsa ntchito graphite ayenera kuwaganizira mozama. Ndiye, mukamagwiritsa ntchito zida za graphite, ndi mavuto ati omwe ayenera kuthetsedwa kaye?
Kuchotsa fumbi: Chifukwa cha kapangidwe ka tinthu tating'onoting'ono ta graphite, fumbi lalikulu limapangidwa panthawi yokonza makina, zomwe zimakhudza kwambiri chilengedwe cha fakitale. Kuphatikiza apo, momwe fumbi limakhudzira zida zimaonekera makamaka chifukwa cha mphamvu yake pamagetsi a zidazo. Chifukwa cha mphamvu yabwino kwambiri ya graphite, ikalowa m'bokosi lamagetsi, imayambitsa ma circuits amagetsi ndi zolakwika zina. Chifukwa chake, tikukulimbikitsani kuti mukhale ndi makina apadera okonzera graphite kuti mugwiritse ntchito. Komabe, chifukwa cha ndalama zambiri zomwe zimagwiritsidwa ntchito pokonza zida zapadera za graphite, mabizinesi ambiri amasamala kwambiri pankhaniyi. Pazifukwa zotere, njira zingapo zotsatirazi zitha kugwiritsidwa ntchito:
Kupereka ma electrode a graphite kwa anthu ena: Pamene graphite ikuchulukirachulukira m'makampani opanga nkhungu, makampani ambiri opanga ma contract manufacturing (OEM) nawonso ayambitsa bizinesi ya OEM ya ma electrode a graphite.
Pambuyo pokonza mafuta: Mukagula graphite, choyamba imaviikidwa mu mafuta a spark kwa nthawi ndithu (nthawi yeniyeni imadalira kuchuluka kwa graphite), kenako imayikidwa pamalo opangira makina kuti igwiritsidwe ntchito. Mwanjira imeneyi, fumbi la graphite silidzauluka mozungulira koma lidzagwa pansi. Izi zichepetsa kukhudzidwa kwa zida ndi chilengedwe.
Kusintha malo opangira makina: Kusinthaku kumaphatikizapo kukhazikitsa chotsukira vacuum pamalo wamba opangira makina.
Kusiyana kwa kutulutsa madzi panthawi yokonza graphite yotulutsa madzi: Mosiyana ndi mkuwa, chifukwa cha kuchuluka kwa ma electrode a graphite omwe amatuluka mwachangu, slag yambiri yokonza madzi imawonongeka pa nthawi iliyonse. Momwe mungachotsere slag bwino imakhala vuto. Chifukwa chake, ndikofunikira kuti kusiyana kwa kutulutsa madzi kukhale kwakukulu kuposa kwa mkuwa. Nthawi zambiri, poika kusiyana kwa kutulutsa madzi, kusiyana kwa kutulutsa madzi kwa graphite kumakhala kwakukulu ndi 10 mpaka 30% kuposa kwa mkuwa.
Kumvetsetsa bwino zofooka zake: Kupatula fumbi, graphite ilinso ndi zofooka zina. Mwachitsanzo, pokonza mawonekedwe a galasi pamwamba, poyerekeza ndi ma electrode amkuwa, ma electrode a graphite sangakwanitse kukwaniritsa zomwe akufuna. Kuti pakhale zotsatira zabwino pamwamba, tinthu tating'onoting'ono ta graphite tiyenera kusankhidwa, ndipo mtengo wa graphite wamtunduwu nthawi zambiri umakhala wokwera nthawi 4 mpaka 6 kuposa wa graphite wamba. Kuphatikiza apo, kugwiritsanso ntchito kwa graphite kumakhala kotsika. Chifukwa cha njira yopangira, gawo laling'ono la graphite lingagwiritsidwe ntchito poberekanso ndikugwiritsa ntchito. Graphite yotayira pambuyo pochotsa magetsi singagwiritsidwenso ntchito pakadali pano, zomwe zimapangitsa kuti mabizinesi azikumana ndi zovuta zina pa kayendetsedwe ka chilengedwe. Pachifukwa ichi, titha kupereka chithandizo chaulere cha graphite kwa makasitomala kuti apewe kubweretsa mavuto pa satifiketi yawo yachilengedwe.
Kuduladula pogwiritsa ntchito makina: Popeza graphite ndi yofooka kuposa mkuwa, ngati graphite ikonzedwa pogwiritsa ntchito njira yomweyi monga ma electrode amkuwa, zimakhala zosavuta kuyambitsa kuduladula kwa ma electrode, makamaka pokonza ma electrode opyapyala. Pachifukwa ichi, chithandizo chaukadaulo chaulere chingaperekedwe kwa opanga nkhungu. Izi zimachitika makamaka kudzera mu kusankha zida zodulira, njira yodutsa zida, komanso kasinthidwe koyenera ka magawo ogwiritsira ntchito. Zitsanzo za graphite zachilengedwe zopangidwa ndi flake zinapangidwa ndi kukanikiza kozizira popanda binder pogwiritsa ntchito graphite zachilengedwe zopangidwa ndi flake. Zotsatira za kusintha kwa kupanga kupanikizika ndi nthawi yogwira kupanikizika pa kuchuluka, porosity ndi mphamvu yosinthasintha ya zitsanzo zinaphunziridwa motsatana. Ubale pakati pa kapangidwe ka microstructure ndi mphamvu yosinthasintha ya zitsanzo za graphite zachilengedwe unasanthulidwa motsatana. Machitidwe awiri, boric acid - urea ndi tetraethyl silicate - acetone - hydrochloric acid, adasankhidwa kuti aphunzire ndikukambirana za katundu wa antioxidant ndi njira za ufa wa graphite wachilengedwe ndi zitsanzo za graphite zachilengedwe asanayambe komanso atalandira chithandizo cha antioxidant. Zomwe zili mkati mwa kafukufuku ndi zotsatira zake ndi izi: Kapangidwe ka graphite yachilengedwe komanso mphamvu ya kapangidwe kake pa kapangidwe kake ndi makhalidwe ake zinaphunziridwa. Zotsatira zake zikusonyeza kuti kupanikizika kwakukulu kwa chitsanzo cha graphite yachilengedwe, kukhuthala kwakukulu ndi mphamvu ya kusinthasintha kwa chitsanzocho, pomwe kufooka kochepa kwa chitsanzocho. Nthawi yolimbikitsira yogwira ntchito siikhudza kwambiri kuchuluka kwa chitsanzocho. Ikakhala yoposa mphindi 5, mawonekedwe a chitsanzocho amakhala abwino. Mphamvu ya kusinthasintha imasonyeza anisotropy yodziwikiratu, ndipo mphamvu ya kusinthasintha m'njira zosiyanasiyana ndi 5.95MPa, 9.68MPa, ndi 12.70MPa motsatana. Anisotropy ya mphamvu ya kusinthasintha imagwirizana kwambiri ndi kapangidwe ka graphite.
Kapangidwe ka antioxidant ka dongosolo la boron-nitrogen komwe kamakonzedwa pogwiritsa ntchito njira yothetsera vutoli komanso njira ya sol ndi ufa wa natural flake graphite wokutidwa ndi silica sol isanayambe komanso itatha kufufuzidwa. Zotsatira zake zikusonyeza kuti pamene kuchuluka kwa ma impregnations kukuwonjezeka, kuchuluka kwa silica sol ndi boron-nitrogen system yokutidwa pamwamba pa ufa wa graphite kumawonjezeka, ndipo mphamvu ya antioxidant imakhala bwino. Kutentha koyambirira kwa oxidation kwa natural flake graphite ndi 883K, ndipo kuchuluka kwa oxidation kulemera kwa 923K ndi 407.6mg/g/h. Ufa wa graphite unalowetsedwa kasanu ndi kanayi motsatana mu boric acid - urea system ndi ethyl silicate - ethanol - hydrochloric acid system. Pambuyo pa chithandizo cha kutentha kwa ola limodzi pansi pa mlengalenga wa 1273K ndi N2, kuchuluka kwa oxidation kulemera kwa graphite ya natural flake graphite pa 923K kunali 47.9 mg/g/h ndi 206.1mg/g/h motsatana. Pambuyo pa kutentha kwa ola limodzi mumlengalenga wa N2 wa 1973K ndi 1723K motsatana, kuchuluka kwa kutayika kwa kulemera kwa okosijeni kwa graphite yachilengedwe ya flake pa 923K kunali 3.0mg /g/h ndi 42.0mg/g/h motsatana; Machitidwe onsewa amatha kuchepetsa kuchuluka kwa kutayika kwa kulemera kwa okosijeni kwa graphite yachilengedwe ya flake, koma mphamvu ya antioxidant ya boric acid - urea system ndi yabwino kuposa ya ethyl silicate - ethanol - hydrochloric acid system.
Ma electrode a grafiti amagwiritsidwa ntchito makamaka m'mafakitale akuluakulu monga kupanga zitsulo mu uvuni wamagetsi, kupanga phosphorous mu uvuni wa miyala, kusungunuka kwa mchenga wa magnesia ndi magetsi, kukonzekera kusungunuka kwa zinthu zotsalira, electrolysis ya aluminiyamu, ndi kupanga phosphorous, silicon, ndi calcium carbide m'mafakitale. Ma electrode a grafiti amagawidwa m'mitundu iwiri: ma electrode achilengedwe a graphite ndi ma electrode a graphite opangidwa. Poyerekeza ndi ma electrode a graphite opangidwa, ma electrode achilengedwe a graphite safuna njira ya graphite chemical. Zotsatira zake, kupanga ma electrode achilengedwe a graphite kumachepa kwambiri, kugwiritsa ntchito mphamvu ndi kuipitsa kumachepa kwambiri, ndipo ndalama zimatsika kwambiri. Ali ndi ubwino woonekeratu wamitengo komanso phindu lazachuma, chomwe ndi chimodzi mwa zifukwa zazikulu zopangira ma electrode achilengedwe a graphite.
Kuphatikiza apo, ma electrode achilengedwe a graphite ndi zinthu zamtengo wapatali kwambiri zopangidwa ndi graphite yachilengedwe ndipo ali ndi chitukuko chachikulu komanso phindu lalikulu. Komabe, magwiridwe antchito, kukana okosijeni ndi mphamvu zamakaniko a ma electrode achilengedwe a graphite pakadali pano ndizochepa poyerekeza ndi ma electrode opangidwa a graphite, omwe ndi chopinga chachikulu pakukula kwawo. Chifukwa chake, kuthana ndi zopinga izi ndiye chinsinsi chokulitsa kugwiritsa ntchito ma electrode achilengedwe a graphite.
Makhalidwe oletsa kuwononga mphamvu a dongosolo la boron-nitrogen lomwe lakonzedwa pogwiritsa ntchito njira yothetsera vutoli komanso njira ya sol ndi ma block a graphite achilengedwe okhala ndi silica sol asanayambe komanso atamaliza kufufuzidwa. Zotsatira zake zikusonyeza kuti mphamvu ya antioxidant ya ma block a graphite achilengedwe okhala ndi silica sol imaipiraipira pamene chiwerengero cha ma impregnations chikuwonjezeka. Ma block a graphite achilengedwe okhala ndi boron-nitrogen ali ndi mphamvu zabwino zoletsa kuwononga mphamvu pamene chiwerengero cha ma impregnations chikuwonjezeka. Kuchepa kwa kulemera kwa ma block a graphite achilengedwe pa 923K ndi 1273K kunali 122.432mg/g/h ndi 191.214mg/g/h, motsatana. Ma block a graphite achilengedwe adalowetsedwa kasanu ndi kanayi motsatana mu dongosolo la boric acid - urea ndi dongosolo la ethyl silicate - ethanol - hydrochloric acid. Pambuyo pa kutentha kwa ola limodzi mumlengalenga wa 1273K ndi N2, kuchuluka kwa kutayika kwa kulemera kwa okosijeni pa 923K kunali 20.477mg/g/h ndi 28.753mg/g/h, motsatana. Pa 1273K, anali 37.064mg/g/h ndi 54.398mg/g/h motsatana; Pambuyo pa chithandizo pa 1973K ndi 1723K motsatana, kuchuluka kwa kutayika kwa kulemera kwa okosijeni pa mabuloko achilengedwe a graphite pa 923K kunali 8.182 mg/g/h ndi 31.347mg/g/h motsatana; Pa 1273K, anali 126.729mg/g/h ndi 169.978mg/g/h motsatana; Machitidwe onsewa amatha kuchepetsa kwambiri kuchuluka kwa kutayika kwa kulemera kwa okosijeni pa mabuloko achilengedwe a graphite. Mofananamo, mphamvu ya antioxidant ya boric acid - urea system ndi yabwino kuposa ya ethyl silicate - ethanol - hydrochloric acid system.
Nthawi yotumizira: Juni-12-2025