Ceramic crucibles yog ua los ntawm cov av nplaum hluav taws kubthiab ruaj khov ntawm qhov kub thiab txias. Lawv tau siv hauv kev ua hlau rau ntau tshaj 7000 xyoo. Niaj hnub nimno ceramic crucibles feem ntau tsim nrog av nplaum thiab graphite kom ruaj khov.
Vim li cas crucibles ua los ntawm graphite?
Hluav Taws Xob Hluav Taws Xob
Crucibles yuav tsum muaj siab graphite cov ntsiab lus hauv cov pa roj carbon binder rau kev txuag hluav taws xob thiab siab thermal conductivity. Lawv yog lub phiab zoo li tus thiab muab tso rau ntawm qhov sib npaug ntawm qhov sib npaug ntawm cov khoom cua sov.
Cov khoom siv dab tsi yog siv los ua crucibles?
Carbon-bonded thiab ceramic-bonded av nplaum graphite thiab silicon carbide crucibles yog siv dav hauv melting thiab tuav aluminium thiab aluminium alloys, aluminium-bronze, tooj liab thiab tooj liab-raws li alloys, cupro-nickel thiab npib tsib xee-bronze alloys, precious hlau, zinc thiab zinc oxide. Crucibles kuj yog siv rau hauv melting cam khwb cia hlau.
Vim li cas graphite tsis hlawv hauv lub crucible?
Hmoov tsis zoo, lawv tsuas yog coated rau sab nraud, yog li sab hauv tseem raug degradation. Nrog rau cov khoom siv graphite, lawv hloov mus rau CO2, yog li muaj tsis muaj seem uas yuav ua rau koj ntseeg tias lawv tau hlawv.
Ntau npaum li cas cov graphite crucible coj tau?
Graphite crucible qhov siab tshaj plaws tuaj yeem mus raws li siab li 5000 ° F thiab tuaj yeem siv rau hauv qhov cub thiab cov txheej txheem kub kub. Graphite crucibles muaj ntau daim ntawv thov nyob rau hauv lub foundry, kuaj kuaj, li qub, sprinklers, thiab lwm yam khoom hnyav. Graphite crucibles tsis ntxeem tau.
