Graphite crucibleyog ib yam khoom tshwj xeeb uas ua lub luag haujlwm tseem ceeb hauv kev ua kom zoo ntawm cov kub, nyiaj, tooj liab thiab lwm yam hlau muaj nuj nqis. Txawm hais tias muaj coob tus neeg yuav tsis paub txog nws, kev tsim cov graphite crucibles koom nrog ntau theem nyuaj los xyuas kom meej qhov zoo tshaj plaws thiab lub zog ntawm cov khoom kawg. Hauv tsab xov xwm no, peb yuav delve rau hauv cov ntsiab lus ntawm txhua theem koom nrog hauv graphite crucible manufacturing txheej txheem.
Thawj theem ntawm kev tsim cov graphite crucibles koom nrog kev ziab. Tom qab lub crucible thiab nws cov khoom txhawb nqa pendant tau tsim, lawv raug tshuaj xyuas raws li cov khoom lag luam ib nrab tiav. Daim tshev no ua kom ntseeg tau tias tsuas yog cov neeg tsim nyog tau nce mus rau theem tom ntej. Tom qab sorting, lawv mus rau ib tug txheej txheem glazing, nyob rau hauv uas lub crucible nto yog coated nrog ib tug glaze. Qhov ci ci no txheej ua haujlwm ntau lub hom phiaj, suav nrog kev nce ntom ntom ntom ntom ntom thiab cov tshuab ua kom zoo nkauj ntawm tus ntoo khaub zig, txhim kho nws cov khoom zoo tag nrho.
Kev tua hluav taws yog ib feem tseem ceeb ntawm kev tsim khoom. Nws cuam tshuam nrog kev siv graphite crucible rau qhov kub thiab txias hauv qhov cub, yog li ntxiv dag zog rau cov qauv ntawm lub crucible. Cov txheej txheem no yog ib qho tseem ceeb los xyuas kom meej lub durability thiab kev ntseeg siab ntawm crucible thaum lub sij hawm refining txheej txheem. Lub hauv paus ntsiab lus ntawm kev tua hluav taws tuaj yeem muab faib ua plaub theem sib txawv kom nkag siab zoo dua cov kev hloov pauv uas tshwm sim hauv cov qauv crucible thaum lub sijhawm txheej txheem no.
Thawj theem yog preheating thiab firing theem, thiab qhov kub thiab txias nyob rau hauv lub kiln yog khaws cia ntawm li 100 mus rau 300 ° C. Nyob rau theem no, qhov seem ntawm cov dej noo nyob rau hauv crucible yog maj mam tshem tawm. Qhib lub qhov cub ci ntsa iab thiab maj mam txo qhov cua sov kom tsis txhob kub hnyiab tam sim ntawd. Kev tswj qhov kub thiab txias yog qhov tseem ceeb nyob rau theem no, vim tias cov dej noo ntau dhau tuaj yeem ua rau lub crucible tawg lossis tawg.
Qhov thib ob yog theem qis-kub tua hluav taws, nrog rau qhov kub ntawm 400 txog 600 ° C. Raws li lub qhov cub txuas ntxiv kom sov, cov dej khi hauv lub crucible pib tawg thiab evaporate. Lub ntsiab Cheebtsam A12O3 thiab SiO2, uas yav tas los khi rau cov av nplaum, pib muaj nyob rau hauv lub xeev dawb. Txawm li cas los xij, nws yuav tsum tau muab sau tseg tias txheej glaze ntawm qhov chaw ntawm lub crucible tseem tsis tau yaj. Txhawm rau tiv thaiv kev xav tsis thoob, qhov cua sov yuav tsum tseem qeeb thiab khov kho. Kev kub ceev thiab tsis sib xws tuaj yeem ua rau lub crucible tawg los yog tawg, cuam tshuam nws txoj kev ncaj ncees.
Nkag mus rau theem thib peb, qhov nruab nrab kub tua hluav taws feem ntau tshwm sim ntawm 700 thiab 900 ° C. Nyob rau theem no, amorphous Al2O3 nyob rau hauv av nplaum yog ib nrab hloov los ua Y-hom crystalline Al2O3. Qhov kev hloov pauv no ntxiv txhim kho cov qauv kev ntseeg siab ntawm lub crucible. Nws yog ib qho tseem ceeb kom tswj xyuas qhov kub thiab txias thaum lub sijhawm no kom tsis txhob muaj qhov tshwm sim tsis zoo.
Qhov kawg theem yog qhov kub-kub tua hluav taws, nrog rau qhov kub siab tshaj 1000 ° C. Nyob rau lub sijhawm no, txheej glaze thaum kawg melts, kom ntseeg tau tias lub crucible nto yog du thiab kaw. Kev kub siab dua kuj ua rau kev txhim kho tag nrho ntawm lub crucible lub zog thiab ua haujlwm ntev.
Tag nrho hauv tag nrho, cov txheej txheem tsim khoom ntawm graphite crucibles suav nrog ntau theem ua tib zoo. Los ntawm kev ziab thiab tshuaj xyuas cov khoom ib nrab rau glazing thiab tua, txhua kauj ruam yog qhov tseem ceeb los xyuas kom meej qhov zoo thiab kev ntseeg siab ntawm qhov kawg graphite crucible. Ua raws li kev ntsuas kub thiab tswj cov cua kub kom zoo yog qhov tseem ceeb rau kev tiv thaiv tej yam tsis xws luag lossis kev raug xwm txheej. Qhov kawg tshwm sim yog qhov zoo tshaj plaws graphite crucible uas tuaj yeem tiv taus cov txheej txheem ua kom zoo zoo ntawm cov hlau muaj txiaj ntsig.
Post lub sij hawm: Nov-29-2023