Nrog rau kev nce qib thiab kev qhib thev naus laus zis, kev lag luam tsim khoom kuj tau qhib nrog kev nrawm. Crucibles yog cov khoom siv dav siv hauv cov txheej txheem ntawm kev lag luam. Graphite crucibles tau txhim kho tas li hauv qhov qhib thiab ua rau ntau hom crucibles uas peb pom tam sim no.
Raws li hom tshiab ntawm crucible, graphite crucible muaj cov yam ntxwv ntawm qhov kub thiab txias tsis kam thiab muaj peev xwm nqus cua sov. Nws tuaj yeem siv los yaj txhua yam khoom zoo heev, thiab nws tau ua rau muaj txiaj ntsig zoo rau kev qhib peb txoj kev lag luam. Nws yog consolidated heev thiab muaj peev xwm tau txais kev siv rau industrialization ntawm qhov kev thov qhib.
Raws li lub crucible uas tau siv dav hauv lub neej tiag tiag, silicon carbide crucibles muaj ntau yam txiaj ntsig. Nws tuaj yeem ua tau raws li qhov xav tau ntawm kev lag luam niaj hnub no thiab tsim kom muaj kev nplua nuj ntxiv rau peb lub neej.
Graphite yog cov khoom siv uas tuaj yeem siv los ua cov ntim khoom. Vim nws cov thermal conductivity, muaj zog kub tsis kam, thiab yooj yim ntawm kev ua, graphite tuaj yeem ua tiav rau hauv graphite crucibles, thiab tom qab ntawd tsim ntau hom khoom kom tau raws li cov neeg siv khoom xav tau. Graphite crucible yog cov khoom siv dav siv hauv kev lag luam, tshwj xeeb tshaj yog nyob rau hauv cov txheej txheem ntawm refining alloy cov ntaub ntawv thiab melting non-ferrous hlau, uas plays lub luag hauj lwm txiav txim siab, yog li ntawd graphite crucibles tseem ceeb heev.
Txawm li cas los xij, graphite crucibles feem ntau yog siv rau hauv cov txheej txheem kub kub, yog li kev saib xyuas raws sij hawm thiab kev nkag siab txog cov kev cai ntawm daim ntawv thov yog cov xwm txheej tsim nyog los ua kom lawv lub neej ua haujlwm tau zoo. Yog li ntawd, ua ntej ntawm tag nrho cov, tom qab siv graphite crucible, nws yuav tsum tau ntxuav nyob rau hauv lub sij hawm kom tsis txhob muaj corrosion ntawm residual hlau thiab lwm yam khoom nyob rau hauv lub crucible, thiab shorten nws lub neej kev pab cuam; thib ob, nws yog ib qho tsim nyog yuav tsum tau ua tib zoo saib xyuas tus kheej kev nyab xeeb hauv cov txheej txheem kev thov, thiab ua kom muaj kev ruaj ntseg cov cuab yeej siv rau cov graphite crucible hauv lub sijhawm; yav tom ntej, cov kws tshaj lij yuav tsum tau siv tag nrho lub cev tiv thaiv kev ntsuas thaum siv cov khoom no kom tsis txhob muaj kev pheej hmoo ntawm cov kua txaws hauv cov txheej txheem kub kub melting.