Takardar zane babban kayan aiki ne{0}wanda aka yi daga graphite na halitta da aka sarrafa na musamman. Yana fahariya kyakkyawan yanayin zafi da wutar lantarki, mai nauyi ne, kuma mai sassauƙa. Ana amfani dashi sosai a cikin sanyaya na'urar lantarki, sabbin batura masu ƙarfi, sararin samaniya, da sauran fannoni. Tsarin samarwa ya ƙunshi madaidaitan matakai masu yawa, gami da pretreatment na albarkatun ƙasa, graphitization, calending, da post{4}} sarrafawa.
Raw Material Pretreatment
Takardar zane yawanci ana samarwa ne daga graphite flake na halitta ko graphite na roba. Na farko, ana juyar da albarkatun ƙasa da rarrabuwa, ana niƙa babban graphite zuwa ƙaramin ƙaramin foda{1} don inganta daidaiton matakan sarrafawa na gaba. Bayan haka, ana cire ƙazanta irin su silicates da baƙin ƙarfe oxides ta hanyar flotation ko tsarkakewar sinadarai don tabbatar da tsaftar graphite fiye da 99%. Don takardar graphite da ke buƙatar tsafta mai ƙarfi, ana yin ƙarin tsarkakewa ta amfani da babban-wanke acid ɗin zafi ko haɗin alkali.
Zane-zane
The pretreated graphite foda yana jurewa graphitization a babban yanayin zafi don haɓaka tsarin sa. Wannan tsari yawanci yana faruwa ne a cikin tanderun zane (kamar Acheson ko tanderun shigar da shi) a yanayin zafi da ya wuce digiri 2800, yana jujjuya amorphous carbon zuwa tsarin graphite sosai. Zane-zane ba wai yana inganta yanayin zafi da wutar lantarki kawai ba amma yana haɓaka ƙarfin injinsa. A wasu matakai, ana ƙara ɗaure (kamar resin phenolic ko farar) don haɓaka aikin birgima na gaba, amma ana buƙatar cikakken carbonization a yanayin zafi mai yawa don hana sauran ƙazanta.
Kalanda
Ana murƙushe kayan da aka zayyana kuma ana tace su, sannan a haɗe su da ƙaramin adadin mai (kamar molybdenum disulfide) kuma a ci gaba da birgima ta cikin kalandar da yawa{0}. Da farko, ana amfani da roughing rolls don rage kauri, sannan a gyare-gyare a hankali zuwa kaurin manufa (yawanci 0.05-2mm). A lokacin tsarin kalandar, zafin jiki (kimanin digiri 100-300) da matsa lamba dole ne a sarrafa su sosai don tabbatar da haɗin kai tsakanin yadudduka na graphite da ƙasa mai santsi. Wasu manyan takaddun graphite kuma suna jujjuya sanyi don ƙara haɓaka girma da kwanciyar hankali.
Buga -Tsarin sarrafawa da Ingancin Inganci
Bayan an yi shi, takardan graphite za a yi yankan, datsa, da jiyya a saman (kamar anti{0}}shafin oxidation) kamar yadda ake buƙata. A ƙarshe, yana fuskantar gwajin inganci mai ƙarfi, gami da juriya mai kauri, haɓakar zafin jiki (kai 1500-2000 W / m · K), ƙarfin ƙarfi, da bincike mai tsafta, don tabbatar da cewa samfurin ya cika ka'idodin masana'antu.
Tsarin samarwa don takarda graphite ya haɗa kayan kimiyyar kayan aiki da fasahar masana'anta daidai. Haɓaka tsarin kai tsaye yana tasiri aikin ƙarshe, mai da shi maɓalli na tushe don haɓakar masana'anta na zamani{1}.
