Graphite cruciblesmuaj zoo thermal conductivity thiab kub tsis kam. Thaum siv qhov kub thiab txias, lawv cov coefficient ntawm thermal expansion yog me me, thiab lawv muaj qee yam strain resistance rau cua kub ceev thiab txias. Muaj zog corrosion kuj mus rau acid thiab alkaline daws, nrog zoo heev tshuaj stability.
Cov yam ntxwv ntawm graphite crucible khoom
1. Kev nqis peev tsawg, graphite crucibles raug nqi ib ncig ntawm 40% qis dua li cov cub tawg zoo sib xws.
2. Cov neeg siv tsis tas yuav tsim lub cub tawg, thiab peb lub tuam txhab ua lag luam muab cov txheej txheem tsim thiab tsim khoom tiav.
3. Kev siv hluav taws xob tsawg, vim qhov tsim nyog tsim, cov qauv siab heev, cov ntaub ntawv tshiab, thiab kev sim zog siv cov graphite crucibles piv rau cov furnaces ntawm tib tus qauv.
4. Cov pa phem tsawg dua, vim tias lub zog huv xws li cov pa roj ntsha lossis roj liquefied tuaj yeem siv los ua roj, ua rau muaj kuab paug tsawg.
5. Kev ua haujlwm yooj yim thiab kev tswj xyuas, ntev npaum li lub valve raug kho raws li qhov kub ntawm lub cub tawg.
6. Cov khoom lag luam zoo yog siab, thiab vim kev ua haujlwm yooj yim thiab kev tswj hwm, thiab kev ua haujlwm zoo, cov khoom zoo yog lav.
7. Lub zog muaj ntau yam kev siv, uas tuaj yeem siv dav hauv cov pa roj carbon monoxide, thee gas, liquefied gas, hnyav roj, diesel, thiab lwm yam. Nws kuj tuaj yeem siv rau cov thee thiab coke tom qab kev hloov pauv yooj yim.
8.Lub graphite crucible rauv muaj ntau yam kev siv kub, uas tuaj yeem yaj, insulated, los yog ob qho tib si siv ua ke.
Kev ua tau zoo ntawm graphite crucible:
1. Rauv kub ntau yam 300-1000
2. Lub peev xwm melting ntawm lub crucible (raws li txhuas) ranges ntawm 30kg txog 560kg.
3. Roj thiab hluav taws xob tiam: 8600 calories / m ntawm cov roj ntuj.
4. Kev siv roj ntau rau molten aluminium: 0.1 natural gas ib kilogram ntawm txhuas.
5. Lub sij hawm melting: 35-150 feeb.
Haum rau smelting ntau yam uas tsis yog-ferrous hlau xws li kub, nyiaj, tooj liab, txhuas, txhuas, zinc, raws li zoo raws li nruab nrab carbon steel thiab ntau yam tsawg hlau.
Kev ua haujlwm ntawm lub cev: hluav taws kub ≥ 16500C; Pom tseeb porosity ≤ 30%; Ntim ceev ≥ 1.7g / cm3; Compression zog ≥ 8.5MPa
Tshuaj muaj pes tsawg leeg: C: 20-45%; SIC: 1-40%; AL2O3: 2-20%; SIB 2: 3-38%
Txhua crucible sawv cev rau 1 kilogram ntawm molten tooj dag.
Lub hom phiaj ntawm graphite crucible:
Graphite crucible yog lub nkoj refractory ua los ntawm ntuj flake graphite, wax pob zeb, silicon carbide thiab lwm yam ntaub ntawv raw, siv rau smelting thiab casting tooj liab, txhuas, zinc, txhuas, kub, nyiaj, thiab ntau yam hlau tsis tshua muaj.
Cov lus qhia rau kev siv cov khoom siv crucible
1. Tus naj npawb specification ntawm lub crucible yog lub peev xwm ntawm tooj liab (#/kg)
2. Graphite crucibles yuav tsum tau khaws cia kom deb ntawm noo noo thiab yuav tsum tau muab cia rau hauv qhov chaw qhuav lossis ntawm ib lub thav duab ntoo.
3. Ua tib zoo saib xyuas thaum lub sijhawm thauj mus los thiab nruj me ntsis txwv tsis pub ntog lossis co.
4. Ua ntej siv, nws yog ib qho tsim nyog yuav tsum tau ua kom sov ci hauv cov khoom siv ziab los yog los ntawm lub qhov cub, nrog rau qhov kub thiab txias maj mam nce mus txog 500 ℃.
5. Lub crucible yuav tsum muab tso rau hauv qab ntawm lub qhov ncauj ntawm lub qhov cub kom tsis txhob hnav thiab tsim kua muag ntawm lub qhov cub npog.
6. Thaum ntxiv cov ntaub ntawv, nws yuav tsum tau ua raws li qhov solubility ntawm lub crucible, thiab cov khoom siv ntau dhau yuav tsum tsis txhob ntxiv kom tsis txhob nthuav dav ntawm lub crucible.
7. Cov cuab yeej tso tawm thiab crucible clamp yuav tsum ua raws li cov duab ntawm lub crucible, thiab qhov nruab nrab yuav tsum tau clamped kom tsis txhob muaj kev puas tsuaj hauv zos rau lub crucible.
8. Thaum tshem tawm slag thiab coke los ntawm sab hauv thiab sab nrauv phab ntsa ntawm lub crucible, nws yuav tsum tau maj mam khob kom tsis txhob puas lub crucible.
9. Ib qho kev ncua deb yuav tsum tau khaws cia nruab nrab ntawm lub crucible thiab lub cub tawg, thiab lub crucible yuav tsum tau muab tso rau hauv nruab nrab ntawm lub cub tawg.
10. Kev siv cov khoom siv hluav taws xob ntau dhau thiab cov khoom siv ntxiv yuav txo tau lub neej kev pab cuam ntawm lub crucible.
11. Thaum lub sij hawm siv, tig lub crucible ib zaug ib lub lim tiam tuaj yeem txuas nws lub neej kev pab.
12. Tsis txhob tso cov nplaim hluav taws muaj zog oxidation ntawm ob sab thiab hauv qab ntawm lub crucible.
Post lub sij hawm: Sep-06-2023