Mar 07, 2024 Tso lus

Aluminium Qws Casting Purification Technology

Cov kua txhuas tau nqus tawm ntawm lub tank electrolytic rau 6061 txhuas rods muaj ntau yam impurities, yog li nws yuav tsum tau ua kom huv si ua ntej casting. Hauv kev lag luam, purification txoj kev xws li kev qhia meej, flux, thiab roj siv feem ntau yog siv, thiab qee qhov kev sim ua kom siv cov kev taw qhia solidification thiab filtration txoj kev rau purification.

Aluminum rod casting purification technology

1. Flux purification yog siv cov flux ntxiv rau cov kua txhuas los ua cov tee dej kom ntau, kom cov oxides hauv cov kua txhuas yog wetted, adsorbed thiab yaj los ntawm cov tee dej no, tsim cov tee tshiab thiab nce mus rau saum npoo. Tom qab txias, lub scum yog tsim thiab tshem tawm. . Lub flux siv rau kev ua kom huv si yog tsim cov ntsev nrog lub ntsej muag tsis tshua muaj, qis dua, muaj peev xwm siab tshaj plaws, thiab muaj peev xwm ua kom muaj peev xwm ua rau oxidized slag. Thaum siv, thawj zaug muab ib qho me me ntawm cov dej ntws mus rau hauv lub tawb hlau, tom qab ntawd ntxig rau hauv qab ntawm lub qhov cub sib tov thiab do rov qab. Tom qab cov flux yog yaj tag, tshem tawm lub tawb hlau thiab cia nws so rau 5 mus rau 10 feeb. Tshem tawm ntawm qhov chaw scum thiab koj tuaj yeem nrum nws. Yog tias tsim nyog, cov flux tuaj yeem raug tshem tawm ntawm qhov chaw los npog nws.
2. Gas purification yog lub ntsiab 6061 txhuas pas nrig purification txoj kev. Cov roj siv yog cov tshuaj chlorine, nitrogen lossis chlorine-nitrogen mixed gas.
(1) Chlorine gas purification. Yav dhau los, active gas chlorine tau siv los ua tus neeg saib xyuas kom huv (chlorination method). Nyob rau hauv txoj kev chlorination, thaum cov roj chlorine tau dhau mus rau hauv cov kua txhuas, ntau qhov zoo heev AlCl3 thiab npuas tsim, uas yog tag nrho tov rau hauv cov kua txhuas. Cov hydrogen yaj nyob rau hauv cov kua txhuas txhuas thiab ib co neeg kho tshuab inclusions yog adsorbed ntawm lub AlCl3 npuas, thiab raug tso tawm raws li cov AlCl3 npuas nce mus rau saum npoo ntawm cov kua txhuas. Thaum cov roj chlorine tau qhia, qee cov ntsiab lus uas muaj electronegative ntau dua li 6061 txhuas rods tuaj yeem chlorinated. Piv txwv li, calcium, sodium, magnesium, thiab lwm yam yog tag nrho cov tsim los ntawm kev qhia txog cov roj chlorine thiab cov chlorides sib xyaw tuaj yeem sib cais. Yog li ntawd, chlorination txoj kev yog ib txoj kev zoo heev rau purifying thawj txhuas. Cov tshuaj chlorine ntau npaum li cas yog 500-700g ib tuj ntawm txhuas. Txawm li cas los xij, vim tias cov pa oxygen yog tshuaj lom thiab muaj txiaj ntsig zoo, txhawm rau kom tsis txhob muaj pa phem thiab txo tus nqi ntawm txhuas ingot ntau lawm, txoj kev chlorination tau maj mam tso tseg hauv kev lag luam niaj hnub txhuas thiab hloov los ntawm inert gas - -Nitrogen purification txoj kev .

Aluminum rod casting purification technology

(2) Nitrogen purification txoj kev. Kuj tseem hu ua kev haus luam yeeb tsis tu ncua purification, alumina npas (418mm) yog siv los ua lim xov xwm. N2 ncaj qha mus rau hauv cov kua txhuas. Cov kua txhuas tau txuas ntxiv mus rau hauv lub qhov cub kom huv, dhau los ntawm alumina pob lim txheej, thiab yaug nrog nitrogen. Yog li ntawd, cov khoom tsis yog xim hlau thiab cov dej uas yaj hauv cov kua txhuas raug tshem tawm, thiab tom qab ntawd tawm mus tas li, kom cov npuas zoo nitrogen sib npaug. Nws plays lub luag hauj lwm purifying nyob rau hauv cov tshuaj kho aluminium kua. Nitrogen tsis muaj kuab paug rau huab cua thiab muaj peev xwm ua kom huv si loj. Nws tuaj yeem ua 200 ~ 600kg ntawm txhuas kua ib feeb. Tus nqi ntawm aluminium poob tshwm sim thaum lub sij hawm purification txheej txheem yog txo, yog li tam sim no nws yog dav siv. Tab sis nws tsis muaj peev xwm li chlorine tshem tawm calcium, sodium thiab magnesium hauv kua txhuas.
(3) Mixed gas purification txoj kev. Kev sib xyaw ntawm chlorine thiab nitrogen yog siv los ntxuav cov kua txhuas. Kev ua haujlwm ntawm 6061 txhuas pas nrig yog tshem tawm hydrogen thiab cais cov oxides ntawm ib sab, thiab tshem tawm qee yam hlau impurities (xws li magnesium) hauv txhuas ntawm qhov tod tes. Cov khoom siv feem ntau yog 90% nitrogen + 10 % chlorine. Kuj tseem muaj 10% chlorine + 10% carbon dioxide + 80% nitrogen. Qhov no muaj txiaj ntsig zoo dua. Cov pa roj carbon dioxide tuaj yeem nthuav tawm cov tshuaj chlorine thiab nitrogen zoo heev, uas tuaj yeem txo lub sijhawm ua haujlwm.

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