Graphite crucible, yomwe imadziwikanso kuti chitsulo chosungunula chamkuwa, mkuwa wosungunuka, ndi zina zotero, imatanthawuza mtundu wa crucible wopangidwa ndi kuwombera graphite, dongo, silika ndi sera ngati zipangizo. Ma graphite crucibles amagwiritsidwa ntchito makamaka kusungunula mkuwa, mkuwa, golide, siliva, zinki ndi lead ndi zitsulo zina zopanda chitsulo ndi ma aloyi awo.
Graphite crucible amapangidwa mwachilengedwe flake graphite monga chuma chachikulu ndi pulasitiki refractory dongo kapena mpweya monga binder. Ili ndi mawonekedwe a kukana kutentha kwambiri, kukhathamiritsa kwamphamvu kwamafuta, kukana kwa dzimbiri komanso moyo wautali wautumiki. Pogwiritsa ntchito kutentha kwakukulu, coefficient of thermal expansion ndi yaying'ono, ndipo imakhala ndi vuto linalake lolimbana ndi kuzizira kofulumira komanso kutentha kwambiri. Ili ndi kukana kwamphamvu kwa dzimbiri ku njira za acidic ndi zamchere, imakhala ndi kukhazikika kwamankhwala abwino kwambiri, ndipo sichita nawo zochitika zilizonse zamankhwala panthawi yosungunuka. Khoma lamkati la graphite crucible ndi losalala, ndipo chitsulo chosungunula sichapafupi kutayikira ndi kumamatira khoma lamkati la crucible, kotero kuti zitsulo zamadzimadzi zimakhala ndi madzi abwino komanso zowonongeka, ndipo ndizoyenera kuponyera muzitsulo zosiyanasiyana. . Chifukwa cha makhalidwe abwino omwe tawatchulawa a graphite crucible, amagwiritsidwa ntchito kwambiri posungunula chitsulo cha alloy ndi kusungunula zitsulo zopanda chitsulo ndi ma aloyi ake.