Kev ceev faj rau kev siv graphite crucible rau buffer modulation yoj melting aluminium rauv:

1 Ua tib zoo saib xyuas thaum pub mis, thiab tsis txhob muab tso rau hauv lub crucible, kom tsis txhob tawg lub crucible. Cov kua theem ntawm cov molten aluminium nyob rau hauv lub lauj kaub yuav tsum tsis txhob tshaj qhov qis ntug ntawm lub nplhaib hlau ntawm lub vaj huam sib luag. Tsis txhob nce tus nqi ntawm qhov xav tau, ua rau cov molten aluminium dhau mus thiab ua rau lub cev ua kom puas. Lub tuam txhab yuav tsis muaj lub luag haujlwm rau qhov poob thiab nws tsis suav nrog qhov kev kho. Tus nqi kho yuav raug xam cais.

2 Thaum lub sij hawm siv ib txwm, nws raug nquahu kom hloov lub crucible tshiab hauv 6-8 lub hlis. Yog tias lub crucible tsis hloov hauv 6-8 lub hlis, lub tuam txhab yuav tsis muaj lub luag haujlwm rau cov khoom siv thiab lwm yam kev poob, thiab kev kho yuav tsis lav.

3 Lub crucible muaj lub neej ua haujlwm ntev dua 24 teev tsis nres. Cov kua zaub yaj hauv lub crucible yuav tsum tau muab tshem tawm thaum lub qhov cub kaw kom tsis txhob nthuav dav thaum cov kua zaub molten yog solidified thiab reheated, uas yuav cuam tshuam rau lub neej ntawm crucible los yog txawm tawg lub crucible.

4 Dissolving aids: lub dissolving aids rau txhuas alloy (FLLUX) thiab tooj liab alloy borax, thov siv ib tug me me vim hais tias ib tug loj npaum li cas yuav corrode lub crucible phab ntsa, thiab cov additive yuav tsum tau muab tso rau hauv lub crucible thaum lub txhuas hlau yog yaj rau hauv. cov kua zaub rau qhov tsawg kawg nkaus ntawm 8 feeb Do sai kom tsis txhob adhering rau sab hauv phab ntsa ntawm lub crucible thiab eroding lub crucible. Rau aluminium alloy additives xws li sodium (NA) cov ntsiab lus siab tshaj 10%, tshwj xeeb crucibles yuav tsum tau.

5 Tom qab ua tiav kev ua haujlwm txhua hnub, thaum lub crucible tseem liab, thov ceev nrooj txiav thiab ntxuav cov khoom siv hlau txuas rau ntawm phab ntsa crucible, kom tsis txhob muaj cov khoom seem ntau dhau uas cuam tshuam rau kev hloov hluav taws xob thiab nce lub sij hawm tawg, ua rau thermal expansion thiab tawg. ntawm lub crucible.

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