Isostatic graphite, eo hape e tsejoang e le graphite e entsoeng ka isostatically, e bolela mokhoa oo motsoako oa thepa e tala o hatelloang ho ba li-blocks tse khutlonnetsepa kapa tse chitja ka har'a sistimi e bitsoang cold isostatic pressing (CIP). Cold isostatic pressing ke mokhoa oa ts'ebetso ea thepa eo ho eona liphetoho tsa khatello ea metsi a koaletsoeng, a sa tsitsang a fetisetsoang ka mokhoa o sa fetoheng karolong e 'ngoe le e' ngoe ea mokelikeli, ho kenyeletsa le bokaholimo ba setshelo sa oona.
Ha ho bapisoa le mekhoa e meng e kang extrusion le vibration forming, theknoloji ea CIP e hlahisa graphite e entsoeng ka ho fetisisa ea isotropic.Isostatic graphitehape ka tloaelo e na le boholo ba lijo-thollo tse nyane ho feta tsa graphite ea maiketsetso (hoo e ka bang li-microns tse 20).
Mokhoa oa tlhahiso ea isostatic graphite
Isostatic pressing ke ts'ebetso ea mekhahlelo e mengata e lumellang ho fumana li-blocks tse ts'oanang haholo tse nang le likarolo tsa 'mele tse sa fetoheng karolong e' ngoe le e 'ngoe le ntlha.
Lintho tse tloaelehileng tsa graphite ea isostatic:
• Mocheso o phahameng haholo le khanyetso ea lik'hemik'hale
• Ho hanyetsa mocheso o babatsehang oa mocheso
• High conductivity ea motlakase
• High conductivity ea mocheso
• E eketsa matla ka mocheso o ntseng o eketseha
• Ho bonolo ho sebetsa
• E ka hlahisoa ka bohloeki bo phahameng haholo (<5 ppm)
Tlhahiso eagraphite ea isostatic
1. Kokoe
Coke ke karolo e hlahisoang libakeng tsa ho hloekisa oli ka ho futhumatsa mashala a thata (600-1200 ° C). Ts'ebetso ena e etsoa ka liontong tsa coke tse etselitsoeng ka ho khetheha ho sebelisa likhase tse tukang le phepelo e fokolang ea oksijene. E na le boleng bo phahameng ba khalori ho feta mashala a tloaelehileng a mesaletsa ea lintho tsa khale.
2. Ho hatakela
Ka mor'a ho hlahloba thepa e tala, e pshatleha ho isa tekanyong e itseng. Mechini e khethehileng ea ho sila thepa e fetisetsa phofo e ntle haholo ea mashala e fumanoang ka mekotleng e khethehileng ebe e e arola ho ea ka boholo ba likaroloana.
Pitch
Ena ke sehlahisoa sa ho phehoa ha mashala a thata, ke hore, ho besoa ho 1000-1200 ° C ntle le moea. Pitch ke mokelikeli o motšo o teteaneng.
3. Ho duba
Ka mor'a hore mokhoa oa ho sila oa coke o phethoe, o kopantsoe le sekontiri se metsi. Lisebelisoa tse tala ka bobeli li kopantsoe ka mocheso o phahameng e le hore mashala a ka qhibiliha 'me a kopane le likaroloana tsa coke.
4. Pulverization ea bobeli
Ka mor'a ts'ebetso ea ho kopanya, ho thehoa libolo tse nyenyane tsa carbon, tse lokelang ho siloa hape ho likaroloana tse ntle haholo.
5. Ho hatella ho Isostatic
Hang ha likaroloana tse ntle tsa boholo bo hlokahalang li lokisitsoe, mohato oa khatiso oa latela. Phofo e fumanoeng e kenngoa ka liforomo tse kholo, litekanyo tsa eona tse lumellanang le boholo ba li-block. Motsoako oa carbon ka hlobo o pepesehetse khatello e phahameng (ho feta 150 MPa), e sebelisang matla a tšoanang le khatello ho likaroloana, ho li hlophisa ka mokhoa o ts'oanang 'me kahoo li ajoa ka tsela e tšoanang. Mokhoa ona o lumella ho fumana li-parameter tse tšoanang tsa graphite ho pholletsa le hlobo.
6. Carbonization
Mokhahlelo o latelang le o telele ka ho fetisisa (likhoeli tse 2-3) ke ho baka ka sebōping. Thepa e hatelitsoeng ka isostatically e behoa ka sebōping se seholo, moo mocheso o fihlang ho 1000 ° C. Ho qoba liphoso leha e le life kapa mapetsong, mocheso oa sebōpi o lula o laoloa. Ka mor'a hore ho baka ho phethoe, thibela e fihla boima bo hlokahalang.
7. Pitch Impregnation
Nakong ena, block e ka kenngoa ka sekontiri 'me ea chesoa hape ho fokotsa porosity ea eona. Hangata ho kenngoa ha metsi ho etsoa ka sekontiri se nang le viscosity e tlase ho feta sekontiri se sebelisoang e le setlamo. Ho hlokahala viscosity e tlase ho tlatsa likheo ka nepo.
8. Graphitization
Mothating ona, matrix ea liathomo tsa khabone e se e laetsoe mme ts'ebetso ea phetoho ho tloha ho khabone ho ea ho graphite e bitsoa graphitization. Graphitization ke ho futhumatsa boloko bo hlahisitsoeng ho mocheso o ka bang 3000°C. Kamora graphitization, letsoalo, conductivity ea motlakase, conductivity ea mocheso le ho hanyetsa kutu li ntlafatsoa haholo, mme ts'ebetso ea ts'ebetso le eona e ntlafalitsoe.
9. Boitsebiso ba Graphite
Ka mor'a graphitization, thepa eohle ea graphite e tlameha ho hlahlojoa - ho kenyelletsa le boholo ba lijo-thollo, boima, ho kobeha le matla a ho hatella.
10. Ho sebetsa
Hang ha thepa e se e lokisitsoe ka botlalo le ho hlahlojoa, e ka etsoa ho latela litokomane tsa bareki.
11. Tlhoekiso
Haeba graphite ea isostatic e sebelisoa ka semiconductor, silicon e le 'ngoe ea kristale le liindasteri tsa matla a athomo, ho hlokahala bohloeki bo phahameng, kahoo litšila tsohle li tlameha ho tlosoa ka mekhoa ea lik'hemik'hale. Tloaelo e tloaelehileng ea ho tlosa litšila tsa graphite ke ho beha sehlahisoa se entsoeng ka graphite ka har'a khase ea halogen le ho se futhumatsa hoo e ka bang 2000 ° C.
12. Phekolo ea sefahleho
Ho itšetlehile ka tšebeliso ea graphite, bokaholimo ba eona bo ka ba fatše 'me bo na le sebaka se boreleli.
13. Ho tsamaisa thepa
Kamora ts'ebetso ea ho qetela, lintlha tse phethiloeng tsa graphite lia phutheloa ebe li romelloa ho moreki.
Bakeng sa tlhaiso-leseling e batsi ka boholo bo fumanehang, limaraka tsa isostatic graphite le litheko, ka kopo ikutloe u lokolohile ho ikopanya le rona. Baenjiniere ba rona ba tla thabela ho u eletsa ka lisebelisoa tse loketseng le ho araba lipotso tsohle tsa hau.
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Nako ea poso: Sep-14-2024