CTE ntawm graphite feem ntau yog 1-4 × 10⁻⁶ / degree, uas yog qis dua li cov hlau (xws li stainless hlau ntawm 17 × 10⁻⁶ / degree) thiab feem ntau cov ntaub ntawv ceramic. Cov yam ntxwv no ua lub luag haujlwm txiav txim siab hauv cov txheej txheem tseem ceeb xws li kub kub graphitization (2800-3000 degree) thiab carbonization ntawm cov khoom tsis zoo electrode.
1. Dimensional stability: Ua kom lub qhov cub thauj khoom raug thiab cov khoom muaj kev nyab xeeb
High-kub deformation tswj: CTE qis ntawm graphite ua rau lub thawv graphite muaj qhov hloov me me ntawm qhov kub siab tshaj 2800℃(txhua qhov 'meter' ntev hloov los ntawm 0.28-1.2mm), zam:
Interlayer misalignment thiab furnace jamming thaum lub crucibles yog stacked, kom ntseeg tau tias ruaj khov kev lag luam ntawm nruam pusher furnaces / tunnel furnaces
Kev hloov pauv ntawm qhov sib txawv ntawm cov crucibles thiab cov phab ntsa crucible, tiv thaiv cov khoom poob los yog cuam tshuam ntawm cov huab cua sab hauv hauv qhov cub
Flow channel blockage thiab foob tsis ua haujlwm, kom ntseeg tau qhov sib xws ntawm qhov cub cua sov
Kev tuav pwm raug: Rau kev cai graphite thawv nrog kab sib chaws / txheej txheej, qhov qis nthuav coefficient tuaj yeem tswj xyuas qhov ntev ntawm lub sijhawm ntev, ua kom muaj qhov ntim zoo ib yam ntawm txhua pawg ntawm cov khoom tsis zoo electrode thiab tsis txhob faib cov khoom tsis sib xws vim lub thawv deformation.
2. Thermal shock resistance: Txiav txim siab lub voj voog lub neej thiab kev tsim khoom txuas ntxiv
Thermal stress inhibition mechanism: Qhov qis CTE ntawm graphite txo qis thermal stress (σ =} E・ ・ΔT/({1}} ν)), nyob rau hauv lub cub tawg nrog kub hloov ceev (xws li graphitization furnaces nrog cua kub txog li 50℃/ min):
Tiv thaiv lub crucible los ntawm kev tsim cov kab nrib pleb, chipping, los yog fragmentation vim thermal expansion thiab contraction, nrog rau kev puas tsuaj npaum li cas qis dua cov ceramic / corundum crucibles.
Muaj peev xwm tiv taus ntau dua lossis sib npaug rau 1000 txias- lub voj voog kub, ncua kev pabcuam lub neej mus rau 1-2 xyoos, txo qhov zaus ntawm kev kaw thiab hloov pauv
Txhim kho kev ruaj ntseg ntau lawm: Lub thawv graphite nrog lub zog thermal poob siab tuaj yeem hloov mus rau qhov kub thiab txias nce nkhaus, ua kom lub voj voog ntau lawm ib batch, thiab txo cov kev pheej hmoo ntawm cov khoom sib kis vim kev puas tsuaj crucible (tsis muaj qhov sib xyaw rau hauv cov hmoov electrode tsis zoo).
3. Temperature field uniformity: ncaj qha cuam tshuam rau microstructure thiab electrochemical kev ua tau zoo ntawm cov khoom tsis zoo electrode
Thaum tshav kub kub hloov pauv tau lees paub: Qhov qis nthuav dav coefficient ua rau lub thawv graphite kom muaj kev ncaj ncees ntawm qhov kub thiab txias, ua rau nws zoo heev thermal conductivity (120-200W / m・K), kom ntseeg tau:
Qhov kub tsis sib xws ntawm txhua txheej thiab txhua cheeb tsam ntawm lub crucible (kub qhov sib txawv Tsawg dua lossis sib npaug li 5 degree), zam tsis txaus lossis ntau dhau graphitization℃hauv qee qhov chaw
Cov qauv siv lead ua zoo sib xws thiab sib luag interlayer sib nrug ntawm cov khoom siv hluav taws xob tsis zoo, txhim kho thawj tus nqi -kev ua haujlwm tawm (thawj efficiency) thiab lub voj voog ruaj khov
Txo cov kev mob tshwm sim los ntawm qhov kub thiab txias (xws li residual amorphous carbon, tsim ntawm impurity theem)
Batch sib xws: Tom qab siv sijhawm ntev - siv sijhawm ntev, qhov hloov pauv me me, ua kom cov khoom sib txawv ntawm cov khoom sib txawv hauv tib lub cub tawg tau txais cov ntaub ntawv thermal tib yam, txhim kho cov khoom sib xws (xws li qhov sib txawv ntawm qhov muaj peev xwm tsawg dua lossis sib npaug li 2%).
4. Cov khoom sib cuag thiab sib cais: cuam tshuam cov khoom purity thiab ntau lawm efficiency
Txhim kho cov khoom uas tsis yog- nplaum nplaum: Qhov qis nthuav coefficient ua rau saum npoo ntawm lub thawv graphite kom deform tsawg kawg thaum lub caij txias thiab kub, tswj cov qauv ntom ntom thiab tus kheej- lubrication, zam:
Tsis zoo electrode graphite hmoov adhering rau ntawm phab ntsa, nrog ib tug paug seem ntawm tsawg tshaj li los yog sib npaug rau 0.1%, txo cov raw khoom pov tseg.
Cov ntaub ntawv agglomeration thiab clustering, kom ntseeg tau zoo ib yam xoob bulk ntom
Txo qhov nyuaj ntawm kev tu thiab txo cov nqi tu neeg ua haujlwm
purity tswj: Tsis muaj deformation los yog cracking txhais tau hais tias tsis muaj detachment ntawm graphite hais, zam kev taw qhia ntawm hlau / tsis yog -hlau impurities (graphite purity siab tshaj los yog sib npaug rau 99.99%), kom ntseeg tau tias tsis tshua muaj impurity yuav tsum ntawm cov khoom tsis zoo electrode (cov hmoov tshauv tsawg dua los yog sib npaug rau 0.3%).
5. Kev them nqi thiab kev muaj peev xwm: Cov ntsiab lus tseem ceeb rau - cov txiaj ntsig kev lag luam ntev
| Impact dimension | Qhov zoo ntawm qis CTE graphite thawv | Qhov tsis zoo ntawm cov ntaub ntawv CTE siab |
|---|---|---|
| Kev pab lub neej | Yuav rov siv dua rau ntau dua lossis sib npaug li 1000 zaug, nrog rau lub voj voog hloov ntawm 1 txog 2 xyoos | Kev pab lub neej Tsawg dua los yog sib npaug li 300 zaug, nquag hloov |
| Load kom muaj nuj nqis | Muaj peev xwm muab tso rau hauv ntau txheej (5 mus rau 8 txheej), nce lub peev xwm thauj khoom los ntawm 30% | Cov khaubncaws sab nraud povtseg Tsawg dua lossis sib npaug li 3, siv qhov chaw tsawg |
| Yield tus nqi | Cov khoom tsim nyog tus nqi Ntau dua lossis sib npaug rau 99.5%, txo kev ua haujlwm dua | Pass tus nqi Tsawg dua lossis sib npaug li 95%, muab pov tseg vim qhov kub tsis sib xws / sib kis |
| Kev siv hluav taws xob | Cov cua kub nkhaus yog qhov ua tau zoo dua, thiab kev siv hluav taws xob hauv ib pawg yog txo los ntawm 15% | Yuav tsum tau cua sov qeeb, siab siv zog thiab lub voj voog ntev |
