Graphite crucible yog lub thawv ua los ntawm cov khoom siv graphite, uas yog siv los yaj hlau, ores thiab lwm yam ntaub ntawv nyob rau hauv qhov kub thiab txias.
1.Structural yam ntxwv ntawm graphite crucible
Graphite Crystal qauv: Graphite crucible yog hexagonal siv lead ua qauv, uas muaj thermal conductivity zoo heev thiab hluav taws xob conductivity. Nws tuaj yeem cuam tshuam cov cua sov ntawm qhov kub thiab txias, txo cov kev ntxhov siab hauv zos, thiab txhim kho nws cov thermal shock resistance.
Kub kub kuj: Nws tuaj yeem tiv taus qhov kub siab txog li 3000 degree thiab haum rau smelting hlau ntawm qhov kub thiab txias. Piv nrog cov crucibles ua los ntawm ceramics, graphite crucibles yog tsim nyog rau kev lag luam ib puag ncig uas yuav tsum tau ruaj khov kub.
Zoo heev corrosion kuj: Graphite nws tus kheej muaj cov tshuaj lom neeg ruaj khov thiab tsis yooj yim cuam tshuam los ntawm cov kua qaub, alkalis lossis lwm yam corrosive, yog li graphite crucibles tuaj yeem tuav lub neej ntev kev pab cuam thaum siv hauv acidic lossis alkaline ib puag ncig.
2. Kev ua tau zoo ntawm graphite crucible
High-efficiency tshav kub conduction:high-temperature graphite crucible muaj cov thermal conductivity zoo, tuaj yeem hloov cov cua sov sai sai rau cov khoom siv, txhim kho cov cua sov kom zoo thiab txo lub zog noj.
Anti-oxidation kev kho mob: Lub crucible tau raug kho nrog kev kho deg los tiv thaiv oxidation los txhim kho nws cov oxidation tsis kam thiab txuas ntxiv lub neej kev pab cuam ntawm crucible.
Corrosion kuj thiab hnav tsis kam:high-temperature graphite crucibles tuaj yeem tswj tau qhov kev ua tau zoo txawm tias nyob rau hauv lub sij hawm ntev kub los yog corrosive ib puag ncig.
3. Daim ntawv thov teb
Kev lag luam metallurgical:Nws tuaj yeem siv rau hauv smelting ntawm non-ferrous hlau xws li tooj liab, txhuas, kub, thiab nyiaj los xyuas kom meej qhov ua tau zoo ntawm cov txheej txheem smelting thiab qhov zoo ntawm cov khoom tiav.
Kev lag luam tshuaj:Nws kuj tuaj yeem siv rau kev sib txuas ntawm cov ntaub ntawv tshwj xeeb, cov tshuaj tiv thaiv kub kub, thiab lwm yam.
Laboratory tshawb fawb:Silicon carbide crucible yog ib qho cuab yeej tseem ceeb rau kev kuaj cov khoom siv kub kub. Nws yog tsim rau smelting thiab decomposition ntawm high-temperature hlau kuaj, thiab ua tau raws li cov khoom yuav tsum tau rau siab kub kuj thiab stability nyob rau hauv kev sim kev tshawb fawb.
4.Kev xaiv thiab txij nkawm ntawm graphite crucible
Cov ntawv xaiv: Xaiv qhov tsim nyog graphite crucible raws li qhov sib txawv melting kub thiab ua haujlwm ib puag ncig. Crucibles ntawm txawv purities, qhov ntau thiab tsawg thiab oxidation tsis kam yuav raug xaiv.
Preheating ua ntej siv:Thaum cov khoom siv thawj zaug, maj mam preheat nws kom tsis txhob muaj cov kab nrib pleb tshwm sim los ntawm qhov kub thiab txias.
Kho kom raug:Ntxuav nws nyob rau lub sijhawm tom qab siv thiab khaws cia rau hauv qhov chaw qhuav kom tsis txhob muaj cov crucible kom ntub thiab cuam tshuam rau nws lub neej kev pab.
Tsis txhob sib cuag mus ntev nrog cov tshuaj corrosive heev: Txawm hais tias lub crucible muaj qee qhov kev tiv thaiv corrosion, sim zam kev sib cuag nrog cov tshuaj corrosive xws li cov kua qaub thiab alkalis kom ntev lub neej ntawm crucible.
