Crucibles tuaj nyob rau hauv ntau yam qauv thiab specifications, muab ib tug ntau yam ntawm daim ntawv thov yam tsis raug txwv los ntawm ntau lawm scale, batch loj, los yog ntau yam ntawm melting cov ntaub ntawv. Qhov kev hloov pauv no ua kom muaj zog yoog raws thiab lav qhov purity ntawm cov ntaub ntawv raug melted.
Cov lus qhia siv:
Tom qab siv, muab lub crucible tso rau hauv qhov chaw qhuav thiab tsis txhob raug dej los nag. Ua ntej siv nws dua, maj mam sov lub crucible rau 500 degrees Celsius.
Thaum ntxiv cov ntaub ntawv rau lub crucible, tsis txhob overfilling los tiv thaiv cov hlau los ntawm expanding thiab cracking lub crucible vim thermal expansion.
Thaum rho tawm cov hlau molten los ntawm lub crucible, siv ib rab diav thaum twg los tau thiab txo qis kev siv cov ntiv tes. Yog tias cov hlua khi lossis lwm yam cuab yeej tsim nyog, xyuas kom lawv phim cov duab ntawm lub crucible kom tsis txhob muaj kev quab yuam hauv zos thiab ua kom nws lub neej ntev.
Lub neej ntev ntawm lub crucible cuam tshuam los ntawm nws kev siv. Tsis txhob coj cov nplaim hluav taws kub oxidation ncaj qha mus rau lub crucible, vim qhov no tuaj yeem ua rau oxidation ceev ntawm cov khoom crucible.
Crucible Manufacturing Materials: Cov khoom siv ntawm crucibles tuaj yeem muab faib ua peb hom: crystalline natural graphite, yas refractory av nplaum, thiab calcined nyuaj kaolin zoo li cov ntaub ntawv. Txij li xyoo 2008, cov khoom siv hluav taws xob tiv taus kub kub xws li silicon carbide, alumina corundum, thiab silicon hlau kuj tau siv los ua cov khoom siv rau crucibles. Cov ntaub ntawv no tseem ceeb txhim kho qhov zoo, qhov ntom ntom, thiab lub zog ua haujlwm ntawm cov khoom crucible.
Daim ntawv thov: Crucibles feem ntau yog siv rau:
Hlawv cov khoom muaj zog
evaporation, concentration, los yog crystallization ntawm cov kev daws teeb meem (thaum evaporating tais diav tsis muaj, crucibles yuav siv tau es tsis txhob)
Cov ntsiab lus tseem ceeb ntawm kev siv:
Crucibles tuaj yeem raug cua sov ncaj qha, tab sis lawv yuav tsum tsis txhob txias sai tom qab cua sov. Siv cov hlua khi los tuav lawv thaum lawv kub.
Muab lub crucible rau ntawm daim duab peb sab av nplaum thaum cua sov.
Do cov ntsiab lus thaum evaporating thiab siv cov cua sov seem kom qhuav kom tiav.
Kev faib tawm ntawm Crucibles: Crucibles tuaj yeem muab faib ua peb pawg: graphite crucibles, av nplaum crucibles, thiab hlau crucibles. Hauv qeb graphite crucible, muaj cov qauv graphite crucibles, tshwj xeeb zoo li graphite crucibles, thiab high-purity graphite crucibles. Txhua hom crucible sib txawv nyob rau hauv kev ua tau zoo, kev siv, thiab kev khiav hauj lwm tej yam kev mob, ua rau variations nyob rau hauv raw cov ntaub ntawv, ntau lawm txoj kev, manufacturing txuj ci, thiab cov khoom specifications.
Specifications thiab Numbering: Crucible specifications (qhov ntau thiab tsawg) feem ntau denoted los ntawm sequential tooj. Piv txwv li, # 1 crucible tuaj yeem tuav tau 1000g ntawm tooj dag thiab hnyav 180g. Lub peev xwm melting rau cov hlau sib txawv lossis cov alloys tuaj yeem suav tau los ntawm kev muab cov crucible qhov ntim-rau-qhov hnyav piv los ntawm qhov tsim nyog hlau lossis alloy coefficient.
Cov ntawv thov tshwj xeeb: Nickel crucibles yog tsim rau cov qauv yaj uas muaj NaOH, Na2O2, Na2CO3, NaHCO3, thiab KNO3 hauv cov kuab tshuaj alkaline. Txawm li cas los xij, lawv tsis haum rau cov qauv yaj uas muaj KHSO4, NaHS04, K2S2O7, lossis Na2S2O7, lossis lwm cov kua qaub acidic, nrog rau cov alkaline sulfides uas muaj cov sulfur.
Hauv kev xaus, crucibles muaj ntau hom kev siv hauv ntau qhov kev lag luam, thiab los ntawm kev ua raws li cov lus qhia siv kom raug, lawv lub neej ntev thiab kev ua tau zoo tuaj yeem ua tiav.
Post lub sij hawm: Aug-01-2023