Graphite crucible, tseem hu ua roasted tooj liab, yog ib hom crucible ua los ntawm firing graphite, av nplaum, silica, thiab siv quav ciab raws li raw cov ntaub ntawv. Lub graphite crucible feem ntau yog ua los ntawm ntuj flake graphite ua cov khoom siv tseem ceeb, thiab ua tiav nrog cov yas hluav taws kub av nplaum los ua cov pa roj carbon monoxide.
Cov yam ntxwv ntawm graphite crucibles
Kev tsim cov thev naus laus zis ntawm kev tsim cov graphite crucibles hauv tsev tau mus txog lossis ntau tshaj li ntawm cov khoom siv raw khoom, thiab txhua txoj hauv kev tau raug coj los siv rau hauv cov khoom siv raw, ntau lawm, thiab lwm yam kom tau raws li kev siv nyob rau hauv hnyav hnyav.
Lub ntsiab nta yog raws li nram no:
High thermal conductivity: Vim yog siv cov khoom siv raw xws li graphite nrog thermal conductivity, lub sij hawm melting yog luv;
Thaum tshav kub kub tsis kam thiab poob siab tsis kam: Nrog rau qhov kub thiab txias tsis kam, nws tsis yooj yim tawg vim txias txias thiab cua sov;
Kev kub siab ua haujlwm: tuaj yeem tiv taus qhov kub ntawm 1200 ~ 1600 degree;
Corrosion resistance: Muaj zog tiv thaiv kev yaig ntawm molten kua zaub.
Kev siv cov graphite crucibles
Graphite crucibles muaj zoo thermal conductivity thiab kub tsis kam. Thaum siv qhov kub thiab txias, lawv cov coefficient ntawm thermal expansion yog me me, thiab lawv muaj qee yam strain resistance rau cua kub ceev thiab txias. Muaj zog corrosion tsis kam mus rau acidic thiab alkaline daws, nrog rau kev ruaj ntseg tshuaj zoo heev. Yog li ntawd, nws yog dav siv nyob rau hauv smelting ntawm qhuav alloy cuab yeej steel thiab non-ferrous hlau thiab lawv alloys.