Kusiyana pakati pa silicon carbide graphite crucible ndi graphite crucible

Pali kusiyana kwakukulu pakatizitsulo za silicon carbidendi ma graphite crucibles pazinthu zambiri monga zida, njira, magwiridwe antchito, ndi mitengo. Kusiyanasiyana kumeneku sikumangokhudza njira yake yopangira zinthu, komanso kumatsimikizira momwe zimagwirira ntchito komanso momwe zimagwiritsidwira ntchito.

kusiyana kwakukulu
Ma graphite crucibles amapangidwa makamaka ndi flake graphite ndipo amagwiritsa ntchito dongo ngati chomangira. Kuphatikiza uku kumapereka graphite crucible yabwino kwambiri matenthedwe madutsidwe ndi kutentha kukana, kupangitsa kuti ikhale yoyenera kugwiritsidwa ntchito munjira zotentha kwambiri zosungunuka. Mapangidwe apadera komanso kutenthetsa kwapamwamba kwa graphite yachilengedwe kumapangitsa kuti ma graphite crucible akhale otchuka kwambiri m'mafakitale opangira zitsulo ndi zoyambira.

Silicon carbide crucible imachokera ku flake graphite yachilengedwe, yokhala ndi silicon carbide monga gawo lalikulu komanso utomoni wotentha kwambiri ngati chomangira. Monga chinthu cholimba kwambiri, silicon carbide imakhala ndi kukana kwamphamvu kwambiri komanso kukhazikika kwamafuta, kulola kuti ma silicon carbide crucibles agwiritsidwe ntchito m'malo ovuta kwambiri. Kugwiritsa ntchito utomoni wotentha kwambiri kumapangitsanso kuti crucible ikhale yamphamvu komanso yolimba.

Kusiyana kwa ndondomeko
Njira yopangira ma graphite crucible makamaka imadalira kukanikiza kwamanja ndi makina. Ma graphite crucibles ang'onoang'ono amapangidwa ndi kukanikiza kwa makina, kenako amawotchedwa mu uvuni pamtunda wotentha wa madigiri 1,000, ndipo pamapeto pake amakutidwa ndi anti-corrosion glaze kapena utoto wotsimikizira chinyezi kuti uwonjezere kulimba komanso kukana kwa dzimbiri. Njira yachikhalidwe imeneyi, ngakhale yotsika mtengo, imakhala ndi malire pakupanga bwino komanso kusasinthasintha kwabwino.

Njira yopangira silicon carbide crucible ndiyotsogola kwambiri, pogwiritsa ntchito zida za isostatic ndi njira yasayansi. Ukadaulo wokanikizira wa Isostatic umagwiritsa ntchito kuthamanga kwa yunifolomu (mpaka 150 MPa), zomwe zimapangitsa kuti kachulukidwe komanso kusasinthika kwa crucible. Izi sizimangowonjezera mphamvu zamakina a crucible, komanso zimawonjezera kukana kwake kugwedezeka kwamafuta ndi dzimbiri.

Kusiyana kwa machitidwe
Pankhani ya magwiridwe antchito, pali kusiyana kwakukulu pakati pa graphite crucibles ndi silicon carbide crucibles. Ma graphite crucibles ali ndi kachulukidwe ka 13 kA/cm², pomwe ma silicon carbide crucibles amakhala ndi kachulukidwe ka 1.7 mpaka 26 kA/mm². Moyo wautumiki wa ma graphite crucibles nthawi zambiri amakhala 3-5 nthawi ya silicon carbide crucibles, zomwe zimachitika makamaka chifukwa champhamvu zakuthupi komanso kukana dzimbiri kwa silicon carbide crucibles.

Kuonjezera apo, kusiyana kwa kutentha pakati pa mkati ndi kunja kwa graphite crucible ndi pafupifupi madigiri 35, pamene kusiyana kwa kutentha kwa silicon carbide crucible ndi madigiri 2-5 okha, zomwe zimapangitsa kuti silicon carbide crucible ikhale yopambana kwambiri poyang'anira kutentha ndi kutentha. bata. Kukana kwa asidi ndi alkali komanso kukana kwa dzimbiri kwa silicon carbide crucibles nakonso ndikwambiri kuposa ma graphite crucibles, omwe amathandizira kwambiri mphamvu zamagetsi ndikupulumutsa pafupifupi 50% mphamvu kuposa ma graphite crucibles.

kusiyana kwa mtengo
Chifukwa cha kusiyana kwa zipangizo ndi njira zopangira, ma graphite crucibles ndi silicon carbide crucibles alinso ndi kusiyana kwakukulu kwamitengo. Nthawi zambiri, ma silicon carbide crucibles amakhala okwera mtengo kuwirikiza katatu kuposa ma graphite crucibles. Kusiyana kwamitengo uku kukuwonetsa zabwino zazikulu za silicon carbide crucibles potengera mtengo wazinthu, zovuta zopangira ndi magwiridwe antchito.

Mwachidule, ngakhale ma silicon carbide crucibles amawononga ndalama zambiri, kulimba kwawo kwapamwamba, kukana kwa dzimbiri, komanso mphamvu zamagetsi zimawapangitsa kukhala okwera mtengo kwambiri pamapulogalamu ambiri ovuta. Ma graphite crucibles amagwiritsidwabe ntchito kwambiri pazinthu zambiri zachikhalidwe chifukwa cha mtengo wawo wotsika komanso zabwino zoyambira. Ubwino ndi kuipa kwa ma crucibles awiriwa zimatsimikizira kuti ndizoyenera pazogwiritsa ntchito zosiyanasiyana.