Vim li cas thiaj li graphite ib cov ntaub ntawv zoo tshaj plaws rau refractier crucailes? Kawm txog nws cov khoom kub tsis sib xws

Graphite yog dav siv nyob rau hauv kev tsim cov refractory crucaid vim yog cov khoom siv hluav taws xob, thiab erecal poob siab heev rau kev kub ntxhov, tswj kev cai lij choj, tswj kev cai lij choj, thiab kawg hauv kev xav tau ib puag ncig xws li cov hlau melting thiab cam khwb cia . Tsis tau, li kev hloov kho cov kab ke crucible, yog li kev txhim kho cov kab ke crucible, yog li kev ua tau zoo ntawm crucible.

Cov Ntsiab Lus Tseem Ceeb:
Vim li cas thiaj li graphite ib cov ntaub ntawv zoo tshaj plaws rau refractier crucailes? Kawm txog nws cov khoom kub tsis sib xws
Siab melting taw tes:

Graphite muaj ib qho siab heev melting taw tes ntawm ntau tshaj 2000℃thiab muaj peev xwm tswj tau rau cov kev siv kub heev, xws li cov hlau melting nyob rau hauv foundries {}}
Muaj peev xwm ntawm graphite crucibles kom tiv taus cov kev kub siab ntau yam tsis muaj kev ua kom nruj thiab ua kom muaj zog uas tau ua kom tiav thiab ua haujlwm thaum cua sov {}}
Zoo heev Thermal Conductivity:

Graphite yog ib tug neeg saib xyuas zoo tshaj plaws ntawm cov cua sov, tso cai rau kev faib tawm thaum lub caij sov, txuag hluav taws xob thiab nce cov txheej txheem equiciency.
Siab condal conductivity tseem me me thermal gradients, txo txoj kev pheej hmoo ntawm kev ntxhov siab thermal thiab tawg .
Tshuaj lom neeg inertness:

Graphite yog cov qauv inert, lub ntsiab lus nws tsis hnov ​​qab nrog cov tshuaj uas feem ntau, acces .
Nws inertness kom ntseeg tau tias cov khoom siv molten nyob hauv qab crucible tseem muaj kev sib kis, khaws cov khoom zoo thiab huv si ntawm cov khoom kawg .
Thermal poob siab:

Graphite cross tuaj yeem tiv thaiv kev hloov pauv kub thiab txias tsis muaj qhov tseem ceeb rau cov txheej txheem uas cov cruced yog rhuab lossis txias tam sim ntawd.
Cov cuab yeej no nce lub durability thiab lub neej ntawm crucible, txo qhov xav tau kev hloov pauv nquag .
Oxidation thiab hnav tsis kam:

Graphite yog tiv taus oxidation thiab hnav, txawm nyob rau hauv huab txheej txheem . Qhov no tswj tau nws cov kev ntseeg siab thiab kev ua tau zoo tshaj li lub sij hawm .
Nws oxidation tiv thaiv tiv thaiv cov khoom los ntawm kev ua tsis ncaj rau hauv qhov chaw siab uas muaj pa yog tam sim no.
Siab zog thiab ntom:

Lub siab-huv cov khoom siv tau siv nyob rau hauv cov crucible muaj lub zog siab thiab ceev dua li cov neeg tawv ncauj ntawm tus ntoo khaub lig thiab txo cov nqi txij nkawm zoo li tus nqi. {2}
Cov khaub ncaws hnav thiab zoo matrix tsim ntawm graphite crucible kuj tseem retards corrosion, ntxiv txhim kho nws durability.
Wide daim ntawv thov:

Graphite cross yog muaj nyob rau ntau qhov ntau thiab tsawg thiab cov duab kom haum rau ntau yam kev siv thiab cov txheej txheem ntawm cov kev lag luam uas xav tau kev lag luam tshwj xeeb xav tau .
Lawv cov kev ua tau zoo hauv ncu thiab cov chaw ua kom sov ua rau lawv zoo ib yam li cov hlau hlau cuab thiab khoom siv .
Zog hluav taws xob thiab kev cia siab:

Graphite cragiline sib xyaw ua ke thermal ruaj khov, thermal distanced kom pab txo cov nqi thiab txhim kho kev ua haujlwm {}}
Kev ntseeg tau ntawm graphite crucaLes ua kom cov khoom lag luam zoo ib yam, ua rau lawv xaiv thawj qhov kev xaiv tseem ceeb rau kev lag luam {}}
Hauv cov ntsiab lus, graphite yog cov ntaub ntawv zoo tshaj plaws rau kev sau ua ke, ua kev lom zem rau cov khoom siv hluav taws xob siab, ua ke nrog cov khoom siv kub siab, cov khoom siv hluav taws xob tsis kam lees thiab siv cov khoom siv kub thiab kub thiab txias Casting .