Isostatic nias Graphiteyog hom tshiab ntawm graphite cov khoom tsim nyob rau xyoo 1960 uas muaj cov khoom zoo tshaj plaws. Piv txwv li, iSostatic nias graphite muaj cov cua sov tsis kam. Nyob rau hauv ib qho chaw inert, nws lub zog kho tsis tau tsuas yog tsis txo qis nrog qhov nce ntawm qhov kub thiab txias, tab sis kuj tseem nce nws tus nqi siab tshaj plaws ntawm 2500 ℃; Piv nrog cov graphite dog dig, nws cov qauv yog qhov zoo thiab ntom, thiab nws cov uniformity yog qhov zoo; Cov coefficient ntawm thermal expansion yog tsawg heev thiab muaj cov cua sov zoo heev; Isotropic; Muaj zog tshuaj corrosion tsis kam, zoo thermal thiab hluav taws xob conductivity; Muaj kev ua haujlwm zoo heev.
Nws yog qhov meej meej vim tias nws ua tau zoo tshaj plaws uas yog dav siv nyob rau hauv teb xws li metallggy, chemistry, kev lag luam hluav taws xob, thiab atomic zog kev lag luam. Ntxiv mus, nrog rau kev txhim kho kev tshawb fawb thiab thev naus laus zis, cov teb daim ntawv thov tau nthuav dav tas li.
Cov txheej txheem ntau lawm ntawm isostatic nias graphite
Cov txheej txheem ntau lawm ntawm isostatic nias graphite yog qhia nyob rau hauv daim duab 1. Nws yog qhov pom tseeb tias cov txheej txheem ntau lawm los ntawm cov duab graphite cov hluav taws xob.
Isostatic nias graphite yuav tsum muaj isotropic raw cov ntaub ntawv, uas yuav tsum tau ua av rau hauv freater freatders. Txias cua tshuab nias txoj kev sib koom tes siv thev naus laus zis, thiab kev voj voog ci tau ntev heev. Txhawm rau kom ua tiav lub hom phiaj ntom, ntau txoj kev impregnation ci mus ncig ua si yuav tsum tau, thiab lub voj voog graphitization ntev dua li ntawm graphite.
Lwm txoj hauv kev rau kev ua tau yosteratic nias graphite yog siv mesophase carbon tsom iav tsom ua cov ntaub ntawv raw. Firstly Mesophase carbon tsom iav tsom iav yog raug rau oxidation stabilization kev kho mob kub ntau dua, ua raws li los ntawm kev xam xyuas txuas ntxiv thiab cov duab. Hom no tsis tau qhia hauv tsab xov xwm no.
1.1 Cov Khoom Siv Raw
The Cov ntaub ntawv tso tawm rau kev ua tau zoo nkauj nias graphite suav nrog aggregates thiab binders. Aggregates feem ntau yog tsim los ntawm cov roj av coke thiab asphalt coke, ntxiv rau hauv av asphalt coke. Piv txwv li, lub Axf Series iTostatic Graphite Ua los ntawm Poco hauv Tebchaws Asmeskas yog tsim los ntawm Av Asphalt Coke Gilsontemoke.
Txhawm rau kho cov khoom ua tau zoo raws li kev siv sib txawv, carbon dub thiab khoom cuav yooj yim. Feem ntau, roj av coke thiab asphalt coke yuav tsum tau calmined nyob rau 1200 ~ 1400 ℃ tshem tawm noo noo thiab cov neeg hloov chaw ua ntej siv.
Txawm li cas los xij, txhawm rau txhim kho cov khoom siv tshuab thiab muaj cov qauv hluav taws xob tsis sib xws, tseem muaj kev tsim cov khoom siv remite xws li coke. Tus yam ntxwv ntawm Chocking yog tias nws muaj tus kheej scatile, muaj tus kheej sintering cov zog, thiab nthuav dav thiab cog lus synchronously nrog cov binder coke. Cov phau ntawv no feem ntau siv cov pob zeb ua kom tawg, thiab raws li cov khoom sib txawv thiab cov txheej txheem sib txawv
Cov kev ua tau zoo ntawm iasteratic nias graphite yog muaj cuam tshuam ntau heev los ntawm cov khoom siv raw, thiab xaiv ntawm cov ntawv sib txuas yog qhov tseem ceeb txuas hauv kev tsim cov khoom lag luam kawg. Ua ntej pub mis, tus yam ntxwv thiab kev sib txuam ntawm cov ntaub ntawv raw yuav tsum yog nruj me ntsis.
1.2 sib tsoo
Lub aggregate loj ntawm isostatic nias graphite feem ntau yuav tsum tau mus txog hauv qab 20um. Tam sim no, cov neeg ua kom zoo tshaj plaws isostatic nias graphite muaj qhov siab tshaj plaws uas hla ntawm 1 μ m. Nws yog heev nyias.
Txhawm rau zom cov cawv Coke rau hauv cov hmoov zoo li qub, lub ultra-zoo yog xav tau. Sib tsoo nrog nruab nrab particle loj ntawm 10-20 μ hmoov cov hmoov ntawm m yuav tsum tau siv ib qho loj dua 10 μ Cov hmoov ntawm m yuav tsum tau siv cov cua ntws sib haum.
1.3 sib xyaw thiab kneading
Tso cov hmoov av hauv av thiab ntim cov pob zeb khi rau hauv cov tshuaj cua sov, kom cov txheej txheej ntawm asly adhered mus rau saum npoo ntawm hmoov Coke hais. Tom qab kneading, tshem tawm cov muab tshuaj txhuam thiab cia nws txias.
Lub Sijhawm Post: Sep-27-2023