Cov hmoov graphite siv ua cov electrodes graphite muaj ntau yam zoo. Txawm li cas los xij, yuav ua li cas kom tau txais cov txiaj ntsig ntawm cov khoom siv no, ua tiav kev txhim kho kev ua haujlwm zoo, txo nqi thiab kev sib tw ua lag luam, cov no tsis yog tsuas yog cov teeb meem rau cov neeg tsim khoom graphite xav txog, tab sis kuj yog cov teeb meem uas cov neeg siv graphite yuav tsum ua tib zoo saib xyuas. Yog li, thaum siv cov khoom graphite, cov teeb meem twg yuav tsum daws ua ntej?
Kev tshem tawm plua plav: Vim yog cov qauv me me ntawm graphite, muaj ntau plua plav tsim tawm thaum lub sijhawm ua haujlwm kho tshuab, uas muaj kev cuam tshuam loj rau ib puag ncig ntawm lub Hoobkas. Tsis tas li ntawd, qhov cuam tshuam ntawm plua plav rau cov khoom siv feem ntau yog pom hauv nws qhov cuam tshuam rau lub zog ntawm cov khoom siv. Vim yog qhov ua tau zoo ntawm hluav taws xob ntawm graphite, thaum nws nkag mus rau hauv lub thawv fais fab, nws yooj yim ua rau lub zog luv luv thiab lwm yam kev ua yuam kev. Yog li ntawd, nws raug pom zoo kom nruab nrog lub tshuab ua graphite tshwj xeeb rau kev ua. Txawm li cas los xij, vim yog tus nqi peev txheej siab ntawm cov khoom siv ua tshwj xeeb rau graphite, ntau lub tuam txhab ceev faj heev hauv qhov no. Hauv qab cov xwm txheej zoo li no, ntau qhov kev daws teeb meem hauv qab no tuaj yeem siv tau:
Kev xa tawm graphite electrode: Nrog rau kev siv graphite ntau ntxiv hauv kev lag luam pwm, ntau thiab ntau lub tuam txhab tsim khoom pwm (OEM) kuj tau qhia txog kev lag luam OEM ntawm graphite electrodes.
Tom qab ua tiav cov roj: Tom qab yuav graphite, nws yuav tsum tau muab tso rau hauv roj hluav taws xob rau ib lub sijhawm (lub sijhawm tshwj xeeb nyob ntawm qhov ntim ntawm graphite), thiab tom qab ntawd muab tso rau hauv lub chaw ua haujlwm rau kev ua tiav. Ua li no, cov hmoov graphite yuav tsis ya mus los tab sis yuav poob rau hauv av. Qhov no yuav txo qhov cuam tshuam rau cov khoom siv thiab ib puag ncig.
Kev hloov kho lub chaw machining: Qhov kev hloov kho no feem ntau yog kev teeb tsa lub tshuab nqus tsev rau ntawm lub chaw machining ib txwm muaj.
Qhov sib txawv ntawm kev tso tawm thaum lub sijhawm ua cov graphite tawm: Tsis zoo li tooj liab, vim yog qhov nrawm ntawm cov electrodes graphite, ntau cov slag ua tiav raug xeb tawm ib lub sijhawm. Yuav ua li cas kom tshem tawm cov slag kom zoo ua teeb meem. Yog li ntawd, nws yog qhov yuav tsum tau ua kom qhov sib txawv ntawm kev tso tawm loj dua li ntawm tooj liab. Feem ntau hais lus, thaum teeb tsa qhov sib txawv ntawm kev tso tawm, qhov sib txawv ntawm kev tso tawm ntawm graphite yog 10 txog 30% loj dua li ntawm tooj liab.
Kev nkag siab zoo txog nws qhov tsis zoo: Ntxiv rau cov hmoov av, graphite kuj muaj qee qhov tsis zoo. Piv txwv li, thaum ua cov pwm ntawm daim iav, piv rau cov electrodes tooj liab, graphite electrodes tsis tshua muaj peev xwm ua tiav qhov xav tau. Txhawm rau kom ua tiav qhov zoo dua ntawm qhov chaw, yuav tsum xaiv qhov loj me me ntawm graphite, thiab tus nqi ntawm hom graphite no feem ntau siab dua 4 txog 6 npaug ntawm graphite ib txwm muaj. Tsis tas li ntawd, kev siv graphite rov qab tau qis dua. Vim yog cov txheej txheem tsim khoom, tsuas yog ib feem me me ntawm graphite tuaj yeem siv rau kev tsim khoom thiab kev siv. Cov graphite pov tseg tom qab kev siv hluav taws xob tsis tuaj yeem siv dua rau lub sijhawm tam sim no, yog li ua rau muaj kev cov nyom rau kev tswj hwm ib puag ncig ntawm cov tuam txhab. Hauv qhov no, peb tuaj yeem muab kev siv rov qab dawb ntawm graphite pov tseg rau cov neeg siv khoom kom tsis txhob ua teeb meem rau lawv daim ntawv pov thawj ib puag ncig.
Kev tawg hauv kev ua khoom siv tshuab: Vim tias graphite tawg yooj yim dua li tooj liab, yog tias graphite raug ua tiav siv tib txoj kev li tooj liab electrodes, nws yooj yim ua rau cov electrodes tawg, tshwj xeeb tshaj yog thaum ua cov electrodes nyias-ribbed. Hauv qhov no, kev txhawb nqa kev txawj ntse dawb tuaj yeem muab rau cov tuam txhab pwm. Nws yog ua tiav los ntawm kev xaiv cov cuab yeej txiav, txoj kev hla cov cuab yeej, thiab kev teeb tsa tsim nyog ntawm cov txheej txheem ua tiav. Cov qauv graphite flake ntuj tau tsim los ntawm kev nias txias yam tsis muaj binder siv cov graphite flake ntuj. Cov teebmeem ntawm kev hloov pauv hauv kev tsim siab thiab lub sijhawm tuav siab rau qhov ceev, porosity thiab flexural zog ntawm cov qauv tau kawm feem. Kev sib raug zoo ntawm microstructure thiab flexural zog ntawm cov qauv graphite flake ntuj tau raug soj ntsuam zoo. Ob lub tshuab, boric acid - urea thiab tetraethyl silicate - acetone - hydrochloric acid, tau raug xaiv los kawm thiab sib tham txog cov khoom antioxidant thiab cov txheej txheem ntawm cov hmoov graphite ntuj thiab cov qauv electrode graphite ntuj ua ntej thiab tom qab kev kho antioxidant feem. Cov ntsiab lus tseem ceeb ntawm kev tshawb fawb thiab cov txiaj ntsig yog raws li nram no: Kev ua tau zoo ntawm cov graphite flake ntuj thiab kev cuam tshuam ntawm kev tsim cov xwm txheej rau microstructure thiab cov khoom tau kawm. Cov txiaj ntsig qhia tau hais tias qhov siab dua ntawm cov qauv graphite flake ntuj, qhov ntau dua qhov ceev thiab lub zog flexural ntawm cov qauv, thaum qhov me dua qhov porosity ntawm cov qauv. Lub sijhawm tuav lub zog tsis muaj feem cuam tshuam rau qhov ceev ntawm cov qauv. Thaum nws ntau tshaj 5 feeb, qhov formability ntawm cov qauv zoo dua. Lub zog flexural qhia tau tias pom tseeb anisotropy, thiab qhov nruab nrab flexural zog hauv cov lus qhia sib txawv yog 5.95MPa, 9.68MPa, thiab 12.70MPa feem. Qhov anisotropy ntawm flexural zog yog ze rau microstructure ntawm graphite.
Cov khoom siv antioxidant ntawm lub boron-nitrogen system uas tau npaj los ntawm txoj kev daws teeb meem thiab sol method thiab cov hmoov graphite flake uas tau coated nrog silica sol ua ntej thiab tom qab tau kawm. Cov txiaj ntsig qhia tau tias thaum tus naj npawb ntawm impregnations nce ntxiv, qhov ntau ntawm silica sol thiab boron-nitrogen system coated rau ntawm qhov chaw ntawm graphite hmoov nce ntxiv, thiab cov khoom antioxidant zoo dua. Qhov kub oxidation pib ntawm graphite flake ntuj yog 883K, thiab qhov hnyav poob oxidation ntawm 923K yog 407.6mg / g / h. Cov hmoov graphite tau impregnated cuaj zaug hauv boric acid - urea system thiab ethyl silicate - ethanol - hydrochloric acid system. Tom qab kho cua sov rau 1 teev nyob rau hauv huab cua ntawm 1273K thiab N2, qhov hnyav poob oxidation ntawm graphite flake ntuj ntawm 923K yog 47.9 mg / g / h thiab 206.1mg / g / h feem. Tom qab kho cua sov rau 1 teev hauv N2 atmospheres ntawm 1973K thiab 1723K feem, qhov hnyav poob ntawm oxidation ntawm cov flake graphite ntuj ntawm 923K yog 3.0mg / g / h thiab 42.0mg / g / h feem; Ob lub kaw lus tuaj yeem txo qhov hnyav poob ntawm oxidation ntawm cov flake graphite ntuj, tab sis cov nyhuv antioxidant ntawm boric acid - urea system zoo dua li ntawm ethyl silicate - ethanol - hydrochloric acid system.
Cov hluav taws xob graphite feem ntau yog siv rau hauv kev lag luam loj xws li kev tsim hluav taws xob rauv taws ua hlau, kev tsim phosphorus hauv cov cub hluav taws xob, kev yaj hluav taws xob ntawm cov xuab zeb magnesia, kev npaj hluav taws xob yaj ntawm cov khoom siv refractory, kev sib cais txhuas electrolysis, thiab kev tsim phosphorus, silicon, thiab calcium carbide hauv kev lag luam. Cov hluav taws xob graphite muab faib ua ob hom: cov hluav taws xob graphite ntuj thiab cov hluav taws xob graphite dag. Piv nrog cov hluav taws xob graphite dag, cov hluav taws xob graphite ntuj tsis xav tau cov txheej txheem tshuaj graphite. Yog li ntawd, lub voj voog tsim khoom ntawm cov hluav taws xob graphite ntuj raug txo qis heev, kev siv hluav taws xob thiab kev ua qias tuaj raug txo qis heev, thiab cov nqi raug txo qis heev. Lawv muaj cov txiaj ntsig zoo thiab cov txiaj ntsig kev lag luam, uas yog ib qho ntawm cov laj thawj tseem ceeb rau kev txhim kho cov hluav taws xob graphite ntuj.
Tsis tas li ntawd xwb, cov electrodes graphite ntuj yog cov khoom lag luam uas muaj nqis ntxiv rau hauv cov graphite ntuj thiab muaj txiaj ntsig zoo rau kev txhim kho thiab kev siv. Txawm li cas los xij, kev ua tau zoo ntawm cov electrodes graphite ntuj tam sim no qis dua li cov electrodes graphite dag, uas yog qhov teeb meem tseem ceeb rau lawv txoj kev loj hlob. Yog li ntawd, kev kov yeej cov teeb meem no yog qhov tseem ceeb rau kev txhim kho kev siv cov electrodes graphite ntuj.
Cov khoom siv antioxidant ntawm lub kaw lus boron-nitrogen uas tau npaj los ntawm txoj kev daws teeb meem thiab txoj kev sol thiab cov khoom siv graphite flake uas tau coated nrog silica sol ua ntej thiab tom qab tau raug kawm. Cov txiaj ntsig qhia tau tias cov khoom siv antioxidant ntawm cov khoom siv graphite ntuj uas tau coated nrog silica sol zuj zus tuaj raws li tus lej ntawm cov impregnations nce ntxiv. Cov khoom siv graphite ntuj uas tau coated nrog boron-nitrogen system muaj cov khoom siv antioxidant zoo dua thaum tus lej ntawm cov impregnations nce ntxiv. Cov nqi oxidation poob ntawm cov khoom siv graphite ntuj ntawm 923K thiab 1273K yog 122.432mg/g/h thiab 191.214mg/g/h, feem. Cov khoom siv graphite ntuj tau impregnated cuaj zaug hauv lub kaw lus boric acid - urea thiab lub kaw lus ethyl silicate - ethanol - hydrochloric acid. Tom qab kho cua sov rau 1 teev hauv huab cua ntawm 1273K thiab N2, cov nqi oxidation poob ntawm 923K yog 20.477mg/g/h thiab 28.753mg/g/h, feem. Ntawm 1273K, lawv yog 37.064mg/g/h thiab 54.398mg/g/h feem; Tom qab kho ntawm 1973K thiab 1723K feem, qhov hnyav poob ntawm cov oxidation ntawm cov graphite blocks ntuj ntawm 923K yog 8.182 mg/g/h thiab 31.347mg/g/h feem; Ntawm 1273K, lawv yog 126.729mg/g/h thiab 169.978mg/g/h feem; Ob lub tshuab tuaj yeem txo qhov hnyav poob ntawm cov graphite blocks ntuj. Ib yam li ntawd, cov nyhuv antioxidant ntawm boric acid - urea system zoo dua li ntawm ethyl silicate - ethanol - hydrochloric acid system.
Lub sijhawm tshaj tawm: Lub Rau Hli-12-2025