Kev ntxuav lub alumina crucible yog ib kauj ruam tseem ceeb hauv kev tswj cov khoom siv hauv chav kuaj thiab ua kom ntseeg tau cov txiaj ntsig kev sim siab. Alumina crucibles feem ntau yog siv rau kev siv kub-kub vim lawv zoo heev tiv thaiv tshav kub thiab tshuaj corrosion. Kev tu kom zoo yuav pab tshem tawm cov kab mob thiab cov khoom seem ntawm kev sim yav dhau los, tiv thaiv kev sib kis thiab ua kom lub crucible lub neej ntev.
Cov ntaub ntawv xav tau
- Spatula los yog txhuam
- dej distilled
- Dilute acid tov (10% hydrochloric acid los yog nitric acid)
- Txhuam txhuam los yog daim txhuam cev
- Cov ntaub tsis muaj lint
- Qhov cub (yeem)
Nov yog cov kauj ruam tshwj xeeb:
1. Txias lub Crucible
Ua ntej ntxuav, xyuas kom meej tias cov alumina crucible tau txias rau chav tsev kub yog tias nws tau siv rau hauv qhov kev sim siab kub. Kev txias nrawm tuaj yeem ua rau thermal shock thiab ua rau lub crucible puas.
2. Tshem tawm cov khoom seem
Ua tib zoo pov tseg cov khoom seem hauv lub crucible. Siv spatula los yog txhuam kom tshem tawm cov khoom seem, thiab yaug lub crucible nrog dej distilled kom tshem tawm cov khoom seem.
3. Soaking hauv Dilute Acid
Yog hais tias muaj cov tawv tawv residues los yog cov khoom tsis huv, soak lub alumina crucible nyob rau hauv ib tug dilute acid kua. Ib qho 10% hydrochloric acid lossis nitric acid tov yog feem ntau siv rau lub hom phiaj no. Cia lub crucible so rau ob peb teev, los yog ib hmos yog tias tsim nyog, kom yooj yim rau kev sib cais ntawm cov kab mob seem.
4. Kev txhuam
Tom qab soaking, siv ib tug mos txhuam los yog daim txhuam cev los txhuam ob sab hauv thiab sab nrauv ntawm lub crucible. Ua tib zoo kom tsis txhob ua rau lub ntsej muag alumina puas. Them tshwj xeeb rau cov cheeb tsam uas muaj cov pob txha tawv. Yog tias tsim nyog, siv cov yas los yog ntoo scraper rau cov tawv tawv ntau dua, kom tsis txhob khawb cov alumina.
5. Yaug
Ua tib zoo yaug lub crucible nrog dej distilled kom tshem tawm cov kua qaub los yog yaj cov kab mob. Rov ua cov txheej txheem yaug ntau zaus kom tshem tawm tag nrho cov kua qaub seem. Nws yog ib qho tseem ceeb kom tshem tawm tag nrho cov kab ntawm cov kua qaub kom tsis txhob cuam tshuam nrog kev sim tom ntej.
6. Qhuav
Cua qhuav lub crucible los yog siv ib daim ntaub huv, tsis muaj lint-dawb los ziab nws. Tsis txhob siv cov phuam da dej lossis cov ntaub so ntswg uas yuav ua rau cov fibers tom qab. Yog tias lub sijhawm muaj kev txhawj xeeb, lub crucible tuaj yeem muab tso rau hauv qhov cub uas tsis muaj qhov kub thiab txias (nyob ib ncig ntawm 100-150 degree) kom qhuav sai. Xyuas kom lub crucible qhuav tag ua ntej cia lossis rov siv dua los tiv thaiv kev loj hlob ntawm cov pwm lossis lwm yam kab mob.
7. Kev tshuaj xyuas
Tom qab ziab, tshuaj xyuas lub alumina crucible rau tej yam tshwm sim ntawm kev puas tsuaj, xws li tawg los yog chips. Tshawb xyuas qhov chaw sab hauv kom huv si, kom ntseeg tau tias tsis muaj cov khoom seem lossis cov khoom tso tawm. Yog tias pom muaj teeb meem, xav txog seb lub crucible puas haum rau rov siv dua lossis yog tias tsim nyog hloov.
8. Yeem Annealing
Yog hais tias lub alumina crucible tau raug mob hnyav los yog muaj kev txhawj xeeb txog nws cov qauv kev ncaj ncees, xav txog kev sib tsoo. Annealing muaj cua sov lub crucible mus rau ib tug nruab nrab kub los txo cov kev ntxhov siab nyob rau hauv lub sab hauv thiab kho nws cov qauv kev ncaj ncees. Cov kauj ruam no yog xaiv tau thiab yuav tsum tau ua raws li cov xwm txheej tshwj xeeb uas lub crucible tau raug.
9. Cia
Thaum ntxuav thiab qhuav kom huv si, khaws cov alumina crucible rau hauv qhov chaw huv si thiab qhuav. Siv cov txheej txheem cia kom tsim nyog los tiv thaiv kev kis kab mob ua ntej nws siv tom ntej. Xyuas kom meej tias lub crucible yog khaws cia cais los ntawm lwm yam khoom siv hauv chav kuaj kom tsis txhob muaj kev puas tsuaj.
10. Kev tiv thaiv
Txhawm rau ua kom huv si yav tom ntej yooj yim dua, xav txog kev siv cov txheej los yog liner hauv crucible rau kev sim uas muaj cov tshuaj reactive. Qhov no tuaj yeem pab tiv thaiv lub crucible thiab txo qhov yuav tshwm sim ntawm residue adhering rau nws qhov chaw.
Los ntawm kev ua raws li cov lus qhia ntxaws no, koj tuaj yeem ntxuav lub alumina crucible zoo, tswj nws txoj kev ncaj ncees thiab ua kom ntseeg tau tias qhov kev sim ua tiav hauv koj qhov chaw ua haujlwm. Kev tu tsis tu ncua thiab tsim nyog txhim kho lub crucible qhov kev ua tau zoo thiab ncua nws txoj sia.
