Ua ib qho alumina crucible suav nrog ob peb kauj ruam thiab cov txheej txheem meej kom ntseeg tau tias cov khoom kawg ua tau raws li qhov xav tau tshwj xeeb. Alumina crucibles feem ntau siv nyob rau hauv lub chaw soj nstuam rau ntau yam high-kub daim ntaub ntawv vim lawv zoo thermal stability thiab tsis kam mus tshuaj corrosion. Ntawm no yog ib daim ntawv qhia ib kauj ruam ntawm yuav ua li cas ua alumina crucible:
1. Kev xaiv raw khoom
Pib nrog high-purity aluminium oxide hmoov, feem ntau hu ua alumina. Lub purity ntawm alumina hmoov yog qhov tseem ceeb los xyuas kom meej qhov kawg crucible muaj cov yam ntxwv xav tau.
2. Sib tov thiab Binder Ntxiv
Sib tov cov hmoov alumina nrog ib daim ntawv los ua ib homogeneous muab tshuaj txhuam. Binders zoo li cov organic polymers tau ntxiv los txhim kho cov yas ntawm cov khoom sib xyaw thiab ua kom yooj yim shaping.
3. Moulding
Hloov cov alumina sib tov rau hauv daim ntawv xav tau crucible. Cov txheej txheem molding feem ntau suav nrog nias, casting, lossis extrusion. Precision nyob rau hauv cov kauj ruam no yog qhov tseem ceeb rau kev ua tiav qhov tseeb qhov ntev thiab kev ncaj ncees ntawm cov qauv.
4. Qhuav
Qhuav lub tsim crucible nyob rau hauv ib qho chaw tswj kom tshem tawm cov dej noo. Cov txheej txheem no feem ntau ua tiav maj mam txhawm rau tiv thaiv kev tawg. Qhov ziab kom qhuav thiab lub sijhawm yog nyob ntawm qhov tshwj xeeb binder siv.
5. Biscuit tua
Ua ib qho kev tua hluav taws ua ntej, hu ua bisque firing, hauv ib lub kiln. Cov kauj ruam no tshem tawm cov khoom siv organic uas tseem tshuav los ntawm cov ntawv khi thiab ntxiv dag zog rau cov qauv. Qhov kub thiab lub sij hawm ntawm bisque firing yog ua tib zoo tswj kom tsis txhob thermal shock.
6. Glazing (yeem)
Siv lub glaze rau lub crucible nto yog xav tau. Glazing tuaj yeem txhim kho lub crucible tiv thaiv cov tshuaj tiv thaiv thiab txhim kho nws cov tsos. Lub glaze feem ntau yog txheej nyias ntawm alumina lossis lwm yam khoom siv ceramic.
7. Kev tua hluav taws kub
Hluav taws kub hnyiab ntawm qhov kub thiab txias rau sinter lub alumina hais, tsim kom muaj ib tug ntom thiab muaj zog ceramic qauv. Qhov kub thiab txias tuaj yeem ncav cuag 1000 degree, nyob ntawm qhov tshwj xeeb alumina muaj pes tsawg leeg thiab cov kev xav tau.
8. Kev Tswj Xyuas Zoo
Ua cov kev ntsuam xyuas zoo kom paub tseeb tias cov crucible ua tau raws li qhov xav tau tshwj xeeb. Qhov no yuav suav nrog kev kuaj qhov ntev, porosity, thiab thermal zog.
9. Cua txias
Maj mam txias lub crucible mus rau chav tsev kub kom tsis txhob thermal stress. Kev txias nrawm tuaj yeem ua rau tawg lossis lwm yam tsis xws luag.
10. Kev soj ntsuam zaum kawg thiab ntim khoom
Tshawb xyuas lub crucible tiav rau tej yam tsis xws luag los yog imperfections. Thaum paub meej, cov crucibles tau npaj rau ntim thiab xa tawm.
Nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias cov txheej txheem tsim khoom tuaj yeem sib txawv raws li cov kev cai tshwj xeeb ntawm alumina crucible thiab cov txheej txheem ua haujlwm los ntawm cov chaw tsim khoom. Kev ua raws li kev tswj xyuas kom zoo thiab kev tswj xyuas meej ntawm kev tua hluav taws yog qhov tseem ceeb los tsim cov khoom zoo alumina crucibles haum rau ntau yam kev siv hauv chav kuaj.
