1.4 Sakandare niƙa
Ana murƙushe wannan manna, a niƙa, kuma a zazzage shi cikin ɓangarorin dubun zuwa ɗaruruwan mitoci kafin a gauraye su daidai.Ana amfani dashi azaman abu mai dannawa, wanda ake kira latsa foda.Kayan aikin don niƙa na biyu yawanci suna amfani da injin abin nadi a tsaye ko niƙa.
1.5 Samfura
Ba kamar talakawa extrusion da gyare-gyare.isostatic latsa graphiteAn kafa ta ta amfani da fasahar latsa isostatic mai sanyi (Hoto 2).Cika ɗanyen foda a cikin ƙirar roba, kuma haɗa foda ta hanyar girgizawar lantarki mai saurin mitoci.Bayan an rufe, sai a kwashe ɓangarorin foda don shayar da iska tsakanin su.Sanya shi a cikin babban matsi mai matsi mai ɗauke da kafofin watsa labarai na ruwa kamar ruwa ko mai, danna shi zuwa 100-200MPa, kuma danna shi cikin samfur na silindi ko rectangular.
Dangane da ka'idar Pascal, ana amfani da matsi akan ƙirar roba ta hanyar matsakaicin ruwa kamar ruwa, kuma matsa lamba daidai yake a kowane bangare.Ta wannan hanyar, ƙwayoyin foda ba su daidaitawa a cikin jagorar cikawa a cikin mold, amma an matsa su cikin tsari mara kyau.Saboda haka, kodayake graphite anisotropic ne a cikin kaddarorin crystallographic, gabaɗaya, graphite isostatic graphite isotropic ne.Samfuran da aka kafa ba wai kawai suna da sifofin cylindrical da rectangular ba, har ma da sifofin cylindrical da crucible.
The isostatic latsa gyare-gyaren inji ne yafi amfani a cikin foda karafa masana'antu.Saboda bukatar manyan masana'antu irin su sararin samaniya, masana'antar nukiliya, gami da ƙarfi, da ƙarfin lantarki mai ƙarfi, haɓaka fasahar matsi na isostatic yana da sauri sosai, kuma yana da ikon kera injunan matsi na isostatic mai sanyi tare da silinda mai aiki. diamita na ciki na 3000mm, tsayin 5000mm, da matsakaicin matsa lamba na 600MPa.A halin yanzu, matsakaicin ƙayyadaddun ƙayyadaddun injunan matsi na isostatic na sanyi da aka yi amfani da su a cikin masana'antar carbon don samar da matsi na isostatic graphite shine Φ 2150mm × 4700mm, tare da matsakaicin matsa lamba na 180MPa.
1.6 Yin burodi
A lokacin aikin gasa, wani hadadden halayen sinadarai yana faruwa tsakanin tara da abin ɗaure, yana haifar da abin ɗaure ya ruɓe ya saki wani abu mai yawa da ba za a iya jurewa ba, yayin da kuma yana jujjuya yanayin ɗaure.A cikin ƙananan zafin jiki preheating mataki, da albarkatun kasa yana faɗaɗa saboda dumama, da kuma a cikin m dumama tsari, da girma shrins saboda condensation dauki.
Girman ƙarar ɗanyen samfurin, zai fi wahala a saki al'amuran da ba su da ƙarfi, kuma saman da ciki na ɗanyen samfurin suna da alaƙa da bambance-bambancen yanayin zafi, haɓakar zafin jiki mara daidaituwa da raguwa, wanda zai iya haifar da fashe a cikin ɗanyen samfurin.
Saboda kyakkyawan tsarinsa, graphite isostatic yana buƙatar tsari na gasasshen jinkirin musamman, kuma zafin cikin tanderun yakamata ya zama iri ɗaya, musamman a lokacin yanayin zafi inda ake fitar da ƙwalwar kwalta da sauri.The dumama tsari ya kamata a za'ayi tare da taka tsantsan, tare da dumama kudi bai wuce 1 ℃ / h da zazzabi bambanci a cikin tanderun kasa da 20 ℃.Wannan tsari yana ɗaukar kimanin watanni 1-2.
1.7 Ciwon ciki
A lokacin gasa, ana fitar da abin da ke da rauni na farar kwal.An bar ramuka masu kyau a cikin samfurin yayin fitar da iskar gas da ƙarar ƙarar, kusan dukkanin su buɗaɗɗe ne.
Don haɓaka girman girma, ƙarfin injina, haɓakawa, haɓakar zafin jiki, da juriya na sinadarai, ana iya amfani da hanyar impregnation na matsin lamba, wanda ya haɗa da shigar da farar kwal ɗin kwal a cikin samfurin ta hanyar buɗe pores.
Samfurin yana buƙatar a fara zafi da farko, sa'an nan kuma a shafe shi kuma a zubar da shi a cikin tanki mai ciki.Bayan haka, ana ƙara kwalta kwal ɗin kwal ɗin kwal ɗin da aka narke a cikin tankin da ke ciki kuma ana matsawa don ba da damar kwalta mai ɗaukar ciki ta shiga cikin samfurin.Yawancin lokaci, isostatic matsi graphite yana jurewa da yawa hawan keke na gasa impregnation.
1.8 Zane-zane
Zafafa samfurin calcined zuwa kimanin 3000 ℃, shirya lattice na carbon atom a cikin tsari mai kyau, kuma kammala canji daga carbon zuwa graphite, wanda ake kira graphitization.
Hanyoyin graphitization sun haɗa da hanyar Acheson, hanyar haɗin jerin thermal na ciki, hanyar shigar da mitoci mai yawa, da dai sauransu. Tsarin Acheson na yau da kullun yana ɗaukar kusan watanni 1-1.5 don ɗaukar samfuran da fitarwa daga tanderun.Kowace tanderu na iya ɗaukar ton da yawa zuwa ton na gasasshen kayayyakin.
Lokacin aikawa: Satumba-29-2023