Graphite pwm rau nruam nruam
Graphite pwm rau nruam nruam
Nruam casting graphite pwm yog hais txog cov khoom siv graphite siv hauv kev nrum nruam pwm. Cov hlau nruam casting tshuab yog thev naus laus zis tshiab uas hloov ncaj qha hlau molten rau hauv cov khoom los ntawm kev nruam casting pwm. Vim tias nws tsis yauv yob thiab ua cov khoom siv ncaj qha, cov cua sov thib ob ntawm cov hlau raug zam, yog li ntau lub zog tuaj yeem txuag tau.
Nruam casting graphite yog tsim los ntawm carbonaceous raw cov ntaub ntawv (roj av coke, pitch coke, thee suab ...) tom qab ua cov txheej txheem ntau lawm. Ntawm lawv, cov txheej txheem compression molding tuaj yeem feem txias txias molding molding lossis txias isostatic nias molding txheej txheem. Kev lag luam qib siab-tonnage txias isostatic nias txheej txheem yog saws los ua kom ntseeg tau cov khoom ntawm cov niaj hnub zoo nkauj, ntom ntom thiab siab-zog txuas ntxiv nrum graphite. Ua kom cov txheej txheem txheej txheem thev naus laus zis kho tuaj yeem hu nkauj kev pab cuam lub neej ntawm graphite crystallizer, txhim kho qhov ua tau zoo ntawm kev nruam hlau nruam nto, thiab nce qhov kev nruam cov txheej txheem nrawm.
Piv nrog cov ntaub ntawv graphite rau lwm cov hom phiaj, nruam nruam graphite muaj cov yam ntxwv li nram no: cov nplua zoo, cov qauv zoo nkauj, qhov ntim siab, qhov tsis muaj qhov txhav thiab lub zog siab. Nws qhov kev kawm theem pib yog raws li hauv qab no:
|
Tsis |
Qhov ntsuas |
|
Cov ntsiab lus C (%) |
99.9 ~ 99.995 |
|
Ntau qhov ceev (g / cm3) |
1.75 ~ 1.90 |
|
Kev Tiv Thaiv Lub Zog (MPa) |
60 ~ 100 |
|
Lub dag zog Flexural (MPa) |
24 ~ 50 |
|
Cov Hluas Cov Qauv (GPa) |
7 ~ 11 |
|
Porosity (%) |
14 ~ 21 |
|
Cov Kev Kuj (· · m) |
10 ~ 20 |
Txheej txheem cej luam ntawm kev loj hlob ntawm kev nruam cov nrheeb graphite nyob hauv tsev thiab txawv teb chaws
1) Cov teb chaws muab qhov tseem ceeb rau kev tsim kho thiab kev thov ntawm kev nruam cov graphite. Qhov no tuaj yeem lees paub los ntawm kev nce hauv ntau yam ntawm kev nruam cov nruam graphite, kev txhim kho cov txheej txheem, thiab kev txhim kho zoo. Piv txwv li, Lub teb chaws Yelemees thiab Nyij Pooj tau siv nyiaj ntau hauv cov txheej txheem ntawm kev tsim cov duab puab ua yeeb yaj kiab tas mus li, kom lawv tsim ntau yam ntawm kev nruam cov graphite, thiab qhov zoo kuj tseem zoo dua. Cov ntawv tooj liab hlau thiab tooj hlau nruam casting tshuab tseem raug tsim los.
2) Nyob rau hauv cov kev taw qhia txog kev tsim khoom, txawv teb chaws tau them nyiaj ntau dua rau txoj kev txhim kho ntawm cov khoom zoo, lub cev ntom nti, cov isotropic graphite ua tus nruam casting graphite. Tshwj xeeb, lub tuam txhab German Linsdorf tau sau cov kev paub ntau hauv thaj chaw no thiab tau coj los ntsuas ntau yam. Nyiv lub tuam txhab Toyo Tansuo kuj tau txais kev ntes, thiab nws muaj peev xwm ua kom dhau kev. Hauv Suav teb, Dongshin Hluav Taws Xob Cov Hluav Taws Xob Cog thiab Shanghai Carbon Cog tau dhau los ua tiav hauv thaj chaw no ob peb xyoos dhau los. Txhawm rau txhim kho cov kev ua haujlwm ntawm kev ua haujlwm ntawm graphite crystallizer, cov txheej txheem txheej txheej saum npoo av tau txais yuav, uas muaj cov teebmeem zoo dua rau kev txhim kho cov kev pab cuam lub neej ntawm kev nruam casting graphite. Lub Soviet Union tau lees txais boron nitride txheej txheem thev naus laus zis, thaum txheej txheej ntawm nruam cov nruas graphite hauv kuv lub teb chaws yog tsuas yog tso pyrolytic graphite. Txawm hais tias nws tsis tau nrov npe nrov, nws tau txais zoo siab los ntawm ntau tus neeg siv. Ntxiv rau, Shanghai hluav taws xob Cov pa roj carbon cog tseem siv cov mis ib txwm ntxiv rau 0.6 rau 2% ntawm cov hlau oxides, thiab siv cov txheej txheem ntawm cov hlau oxide no hloov mus rau qhov chaw siab melting carbides ntawm 2500 ℃ graphitization siab kub, yog li txhim kho oxidation tsis kam. ntawm kev nruam casting graphite. Txhawm rau lub hom phiaj ntawm kev txhim kho lub neej kev pab.
3) Cov kev teev cia loj ntawm kev ua tiav graphite tau dhau los ua qhov tseem ceeb tshaj plaws. Hauv kev pom qhov tseeb tias qhov zoo ntawm cov khoom lag luam loj ntawm kev ua yeeb yam txuas ntxiv muaj qhov sib txawv loj heev piv nrog txawv teb chaws, kev sib zog yuav tsum tsim kho nws. Qhov no yog tsim nyog ntawm cov tuam ntxhab tsim nyog mloog, ob qho tib si cov txiaj ntsig ntawm kev sib raug zoo thiab nyiaj txiag.
4) Hauv kuv lub teb chaws, kev nruam nruam tshuab ntawm tooj liab profiles tau tsim sai heev, pib ua ntej, muaj qhov loj dua, thiab muaj kev paub tab thiab kev paub tab. Kev siv tshuab nruam casting nruam cov cuab yeej txuas ntxiv yog tsim kho tshiab, thiab cov cuab yeej nruam casting tsim tseem Txawm hais tias cov nrum graphite tseem siv tau, kev txhim kho txuas ntxiv thiab txhim kho yog tsim nyog.
5) Kev tshawb fawb yuav tsum tau ua kom txhawm rau txhim kho lub tshuab ua kom raug ntawm kev nruam nqus graphite pwm thiab txhim kho cov qauv khoom. Qhov no tseem yog ib qho ntawm kev ntsuas txhawm rau txhim kho lub neej ntawm graphite crystallizer. Lub teb chaws Yelemees thiab Soviet lub tuam txhab muaj qhov yuav tsum tau ua kom tau qhov tseeb ntawm cov khoom ua kom raug, thiab cov neeg siv hauv tsev tseem cia siab tias qhov kev puas tsuaj ntawm sab hauv phab ntsa ntawm kev nruam cov graphite muaj peev xwm muaj peev xwm hloov kho tau, uas tuaj yeem tiv thaiv kev puas ntsoog ntawm qhov chaw ntawm cov casting. Ib qho ntxiv, txhawm rau txhim kho lub xeev kev tiv tauj. Cov duab thiab cov qauv ntawm kev nruam cov nruam graphite yuav tsum txhim kho kom qhov chaw sib tiv tauj ntawm nws thiab tooj liab pwm ncav cuag li 80%.
