Graphite crucible refractory kutentha

Graphite ili ndi mitundu yambiri yogwiritsira ntchito ndipo ndi imodzi mwazomera zomwe zimagonjetsedwa ndi kutentha kwakukulu. Monga ma graphite crucibles, amapangidwa ndi zinthu zachilengedwe za graphite ndipo amakhalabe ndi mawonekedwe abwino kwambiri a graphite. Kodi kutentha kwa refractory kwa graphite crucible ndi chiyani?

Ubwino wa graphite crucible:

1. Kuthamanga kwachangu kwa kutentha kwachangu, kachulukidwe kakang’ono, kuchepetsa nthawi yowonongeka, kupulumutsa mphamvu, kutulutsa mphamvu zambiri, ndikupulumutsa antchito.

2. Kapangidwe ka yunifolomu, kukana kupsinjika kwapadera komanso kukhazikika kwamankhwala abwino.

3. Kuteteza chilengedwe, kupulumutsa mphamvu, kukana dzimbiri, kukana kwa asidi ndi alkali, etc.

Chithunzi: graphite crucible

Monga mkuwa wathu wamba wachitsulo, aluminiyamu, golidi, siliva, lead, zinki ndi aloyi, zonse zimatha kusungunuka kudzera muzitsulo za graphite. Zitha kuwoneka kuti kutentha kumene graphite crucible imatha kupirira ndipamwamba kuposa malo osungunuka azitsulozi.

Malo osungunuka a graphite ndi 3850 ° C±50 °, ndipo malo otentha ndi 4250 ° C. Graphite ndi chinthu choyera kwambiri, mtundu wamtundu wa kristalo. Mphamvu zake zimawonjezeka ndi kuwonjezeka kwa kutentha. Pa 2000 ° C, mphamvu ya graphite imawirikiza kawiri. Ngakhale zitakhala ndi kutentha kwapamwamba kwambiri kwa arc, kulemera kwake kumakhala kochepa kwambiri, ndipo coefficient yowonjezera kutentha ndi yaying’ono kwambiri.

Kodi kutentha kwa graphite crucible kumakwera bwanji? N’zothekanso kufika madigiri a 3000, koma mkonzi amalimbikitsa kuti kutentha kwanu kusapitirire madigiri a 1400, chifukwa n’kosavuta kukhala oxidized komanso osakhalitsa.