Selelekela
Lefapheng la metallurgical, tšebeliso ea lisebelisoa tsa boleng bo phahameng ke ea bohlokoa ho netefatsa tlhahiso e sebetsang le e ka tšeptjoang ea litšepe le li-alloys. Har'a lisebelisoa tse fapaneng tse sebelisitsoeng, li-graphite crucibles li tumme haholo ka lebaka la thepa ea tsona e ikhethang ea ho hanyetsa kutu. Sengoliloeng sena se hlahloba thepa ea ho hanyetsa kutu ealikotlolo tsa graphitele karolo ea bona ea bohlokoa lits'ebetsong tsa metallurgic.
Corrosion Resistance ofGraphite Crucibles
Graphite, mofuta oa carbon, o bontša khanyetso e tsotehang khahlanong le tlhaselo ea lik'hemik'hale le mocheso o phahameng, e leng se etsang hore e be thepa e loketseng bakeng sa li-crucibles indastering ea metallurgic. Ho hanyetsa ho bola ha li-graphite crucibles ho bakoa ke thepa e ikhethang ea graphite ka boeona. Graphite e na le sebopeho se sa sebetseng, se e thibelang ho sebetsana le li-acids tse ngata, alkalis, le lintho tse ling tse senyang tse fumanoang nakong ea ho qhibiliha ha tšepe le tlhahiso ea motsoako.
▪ Ho Hanela Asiti:
Li-crucible tsa graphitebontša khanyetso e babatsehang tikolohong ea asiti. Li ka mamella litlamorao tse senyang tsa asiti tse kang sulfuric acid, hydrochloric acid, le nitric acid. Boleng bona bo bohlokoa mekhoeng e amanang le ho sebetsana le li-acids, joalo ka tlhahiso ea litšepe tse itseng le li-oxide tsa tšepe.
▪ Khanyetso ea Alkali:
Ho phaella ho acid,likotlolo tsa graphitebontša khanyetso ho alkalis. Lintho tsa alkaline, joalo ka sodium hydroxide le potassium hydroxide, li sebelisoa hangata lits'ebetsong tse fapaneng tsa metallurgical.Li-crucible tsa graphitelula u sa angoe ke li-alkali tsena, ho netefatsa botšepehi le nako e telele ea crucible nakong ea mekhoa e joalo.
▪ Oxidation Resistance:
Graphite e na le khanyetso e ntle ea oxidation, leha e le mocheso o phahameng. Ha e le tlas'a mocheso o feteletseng, graphite e etsa lera le sireletsang la graphite oxide holim'a eona, e sebetsang e le thibelo khahlanong le oxidation e eketsehileng. Thepa ena e na le molemo haholo lits'ebetsong moo li-crucibles li pepeselitsoeng moeeng oxidizing, joalo ka ho qhibilihisa le ho hloekisoa ha litšepe.
Thermal Shock Resistance: Karolo e 'ngoe ea bohlokoa ealikotlolo tsa graphiteke ho hanyetsa ha bona mochesong oa mocheso. Graphite e na le conductivity e phahameng ea mocheso le coefficient e tlase ea katoloso ea mocheso, e e nolofalletsang ho mamella liphetoho tse potlakileng tsa mocheso ntle le ho senya kapa ho senya. Ho hanyetsa hona ha mocheso oa mocheso ho bohlokoa lits'ebetsong tse kenyelletsang potoloho e pheta-phetoang ea ho futhumatsa le ho pholisa, joalo ka ho lahla tšepe le tlhahiso ea alloy.
Melemo ea Graphite Crucibles
Thepa ea ho hanyetsa kutu ea li-graphite crucibles e fana ka melemo e mengata indastering ea metallurgic:
▪ Bophelo bo Bolelele:
Li-crucibles tsa graphite li na le nako e telele ea bophelo ha li bapisoa le li-crucibles tsa setso tse entsoeng ka thepa e kang letsopa kapa ceramic ka lebaka la ho hanyetsa ha tsona ho hoholo le mocheso oa mocheso.
▪ Boleng bo Ntlafetseng ba Sehlahisoa:
Sebopeho se sa sebetseng sa li-graphite crucibles se tiisa hore tšepe e qhibilihisitsoeng kapa alloy e lula e sa silafala, e lebisang ho lihlahisoa tsa boleng bo phahameng.
▪ Matla a Matla:
Li-crucibles tsa graphite li na le conductivity e ntle ea mocheso, tse nolofalletsang ho fetisa mocheso ka mokhoa o nepahetseng, kabo e tšoanang ea mocheso, le ho fokotsa tšebeliso ea matla nakong ea ts'ebetso ea ho qhibiliha.
Katleho ea Litšenyehelo: Le hoja qalong e ne e le theko e boima ho feta lisebelisoa tse ling tsa crucible, nako e telele ea bophelo ea graphite crucibles le ts'ebetso e phahameng li etsa hore e be khetho e bolokang chelete e ngata ha nako e ntse e ea.
Qetello
Li-crucible tsa graphite li bapala karolo ea bohlokoa indastering ea metallurgic, e fana ka thepa e ikhethang ea ho hanyetsa kutu, ho hanyetsa mocheso oa mocheso le ho hanyetsa oxidation. Bokhoni ba bona ba ho mamella maemo a thata a kopaneng nakong ea ho qhibiliha ha tšepe le tlhahiso ea alloy e etsa hore e be tsa bohlokoa haholo lits'ebetsong tse fapaneng tsa metallurgic. Ka ho khetha li-crucible tsa graphite, bahlahisi ba ka etsa bonnete ba hore boleng ba sehlahisoa bo ntlafetse, nako e telele ea bophelo ba crucible, ts'ebetso ea matla, le katleho e akaretsang ea litšenyehelo. Ha indasteri ea metallurgic e ntse e tsoela pele, li-graphite crucibles li tla lula e le karolo e ka tšeptjoang le ea bohlokoa molemong oa tlhahiso ea tšepe e sebetsang hantle le ea boleng bo holimo.
Nako ea poso: Apr-02-2024