Alumina Crucible nrog lub hau

Crucibles ua los ntawm alumina yog ib qho tseem ceeb ntawm cov khoom siv hauv chav kuaj uas feem ntau siv rau ntau yam kev ua haujlwm kub, xws li kev npaj ua qauv, kev tshuaj xyuas cov khoom, thiab tshuaj lom neeg. Aluminium oxide (Al2O3), tseem hu ua alumina, feem ntau yog siv los ua cov crucibles vim nws qhov tshwj xeeb kub thiab tshuaj tiv thaiv zoo.

Cov yam ntxwv tseem ceeb ntawm Alumina Crucibles
Khoom siv

Feem ntau ntawm alumina crucibles muaj aluminium oxide nrog rau qib siab purity. Kev ncaj ncees ntawm cov khoom siv alumina tso cai rau cov qauv sib kis tsawg thiab txhim khu kev qha nyob rau hauv qhov kub thiab txias.

Kub-kub Resistance

Crucibles ua los ntawm alumina tuaj yeem tiv taus qhov kub thiab txias li 1600 degree (2912 degree F), thiab qee qhov ntau dua. Yog li ntawd, lawv tsim nyog rau melting, calcination, sintering, thiab lwm yam kev siv kub.

Thermal stability

Thaum lub sij hawm cua sov thiab cua txias, alumina crucibles muaj qhov zoo thermal stability thiab tsis muaj thermal expansion lossis contraction. Cov yam ntxwv no tso cai rau kev tswj xyuas qhov kub thiab txias thiab pab tswj kev ncaj ncees ntawm cov qauv.

Tshuaj tiv thaiv

Alumina muaj cov tshuaj tiv thaiv siab, nrog rau cov tshuaj tiv thaiv acids thiab cov hauv paus. Vim lawv cov tshuaj ruaj khov, alumina crucibles yuav siv tau zoo rau ntau yam tshuaj tiv thaiv, kev zom zaub mov, thiab kev ua haujlwm fusion.

Tsis-Reactive

Txij li thaum alumina crucibles tsis hnov ​​​​mob nrog rau feem ntau ntawm cov tshuaj, lawv yuav tsis qhia impurities los yog cuam tshuam cov ntaub ntawv los yog tshuaj tiv thaiv.

Thermal Shock Resistance

Alumina crucibles tuaj yeem ciaj sia qhov kub hloov pauv sai yam tsis muaj kev tawg lossis tawg. Rau cov ntawv thov uas xav tau kev hloov pauv sai, qhov kev ua siab ntev rau thermal shock yog qhov tseem ceeb.

Hluav taws xob rwb thaiv tsev

Alumina yog ib qho hluav taws xob insulator, uas yog ib qho tseem ceeb nyob rau hauv tej yam kub kub uas yuav tsum tau muaj hluav taws xob cais.

Kev tsim khoom ntawm Alumina Crucible nrog Lids
Kev tsim khoom ntawm alumina crucibles suav nrog ob peb kauj ruam los hloov cov ntaub ntawv raw rau hauv cov khoom kawg. Alumina crucibles feem ntau yog ua los ntawm high-purity aluminium oxide (Al2O3) hmoov, uas yog ua tiav, zoo li tus, thiab raug rho tawm haujlwm los tsim crucibles nrog zoo heev thermal thiab tshuaj tiv thaiv zog. Ntawm no yog cov ntsiab lus ntawm kev tsim khoom rau alumina crucibles:

1. Kev xaiv raw khoom

Cov khoom siv tseem ceeb rau alumina crucibles yog aluminium oxide (Al2O3) hmoov. Qhov zoo thiab purity ntawm cov hmoov yog qhov tseem ceeb hauv kev txiav txim siab qhov kawg ntawm lub crucibles. Cov neeg tsim khoom feem ntau siv high-purity alumina kom txo qis impurities thiab ua kom muaj kev ua tau zoo dua.

2. Kev npaj hmoov

Cov hmoov txhuas oxide yog ua tib zoo npaj los ntawm kev sib tsoo thiab milling kom ua tau raws li qhov loj me thiab kev faib tawm. Cov kauj ruam no yuav pab kom muaj kev sib haum xeeb hauv cov khoom kawg.

3. Binder Ntxiv

Txhawm rau kom yooj yim shaping thiab molding, cov ntaub ntawv binder yog ntxiv rau alumina hmoov. Cov binders feem ntau suav nrog cov khoom siv organic xws li cellulose lossis polymers. Lub binder pab tsim cov sib tov sib xyaw uas tuaj yeem ua rau hauv cov duab uas xav tau.

4. Kev tsim

Lub alumina hmoov thiab binder sib tov yog zoo li tus rau hauv daim ntawv xav tau crucible. Qhov no tuaj yeem ua tiav siv ntau txoj hauv kev, xws li:
- Nias: Cov sib tov yog compressed rau hauv ib lub crucible zoo siv hydraulic los yog mechanical presses.
- Slip Casting: Lub slurry ntawm alumina hmoov thiab binder yog nchuav rau hauv pwm los tsim cov duab crucible.
- Extrusion: Qhov sib tov yog yuam los ntawm kev tuag los tsim cov duab sib txawv ntawm qhov sib txawv.

5. Qhuav

Tom qab shaping, lub crucible blanks yog ua tib zoo qhuav kom tshem tawm cov dej noo ntau dhau thiab khi. Qhov no feem ntau yog ua tiav ntawm qhov ntsuas kub kom tiv thaiv kev tawg lossis deformation.

6. Kev tua

Cov crucibles qhuav yog raug rho tawm haujlwm nyob rau hauv qhov cub kub kub los yog qhov cub. Thaum lub sij hawm tua hluav taws no, cov crucibles raug sintering, uas muaj cua sov rau lawv mus rau qhov kub thiab txias (feem ntau saum 1600 degree los yog 2912 degree F) kom sib sau cov alumina hais thiab tshem tawm cov organic binders. Cov txheej txheem sintering muab cov crucibles lawv qhov kawg ntom thiab lub zog.

7. Ua tiav

Tom qab sintering, cov crucibles tuaj yeem ua tiav cov txheej txheem ntxiv. Qhov no tuaj yeem suav nrog machining lossis sib tsoo kom ua tiav qhov ntev thiab qhov zoo nkauj sab hauv.

8. Kev Tswj Xyuas Zoo

Crucibles tau raug nruj nruj ntsuas ntsuas kom ntseeg tau tias lawv ua tau raws li qhov xav tau tshwj xeeb. Qhov no suav nrog kev tshuaj xyuas qhov tseeb qhov tseeb, kev ua haujlwm ncaj ncees, thiab tag nrho qhov zoo

9. Ntim

Cov tiav alumina crucibles yog ua tib zoo ntim rau kev cia thiab xa khoom. Kev ntim khoom kom zoo pab tiv thaiv cov crucibles los ntawm kev puas tsuaj thaum thauj.
 

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