Koj puas paub cov txheej txheem Melting ntawm Aluminium Cans?

Aluminium cov kaus poom yog ib qho kev pom nyob rau hauv peb lub neej niaj hnub, ua cov thawv rau dej haus thiab lwm yam khoom siv.Cov kaus poom no yog tsim los ntawm lub teeb yuag, corrosion-resistant, thiab recyclable khoom - aluminium.Kev tsim khoom thiab rov ua dua tshiab ntawm txhuas cov kaus poom koom nrog ntau cov txheej txheem, suav nrog kev yaj ntawm aluminium.Nyob rau hauv tsab xov xwm no, peb yuav tshawb txog cov txheej txheem melting zoo ntawm txhuas cov kaus poom, tsom rau qhov tseem ceeb xws li aluminium melting rauv, slag tshem tawm cov neeg ua haujlwm, cov neeg ua haujlwm zoo, cov hlau nplaum silicon, thiab cov ntxaij lim dej ceramic.

I. Aluminium Melting Rauv
Cov txheej txheem melting ntawm txhuas cov kaus poom pib nrog aluminium melting rauv, uas plays lub luag haujlwm tseem ceeb hauv kev hloov cov khoom txhuas rau hauv lub xeev molten.Muaj ntau hom furnaces siv nyob rau hauv kev lag luam, tab sis cov feem ntau muaj xws li cov hauv qab no:
Reverberatory Rauv: Lub qhov cub no yog tsim los nrog cov khoom siv qis, cov duab plaub qhov twg txhuas yog rhuab indirect los ntawm radiant tshav kub los ntawm lub ru tsev thiab phab ntsa.Lub cub tawg tuaj yeem ncav cuag qhov kub txog li 1200 ° C, uas yog ntau tshaj qhov txaus rau yaj aluminium.
Crucible Rauv: Hom rauv no siv lub refractory-lined crucible los tuav cov txhuas.Lub crucible yog rhuab los ntawm hluav taws xob los yog roj burners, thiab cov txhuas melts nyob rau hauv nws.
Induction Rauv: Qhov cub no tso siab rau electromagnetic induction los ua kom sov hauv txhuas.Cov txheej txheem yog huv si thiab lub zog-npaum, ua rau nws yog ib tug nrov xaiv rau melting aluminium.

II.Slag Removal Agents
Thaum lub sij hawm melting txheej txheem, impurities nyob rau hauv lub txhuas tuaj yeem tsim ib txheej ntawm slag rau saum npoo ntawm cov hlau molten.Txhawm rau kom ntseeg tau qhov zoo ntawm cov khoom kawg, nws yog ib qho tseem ceeb kom tshem tawm cov slag.Slag tshem tawm cov neeg ua haujlwm, tseem hu ua fluxes, yog cov tshuaj uas pab txhawb kev sib cais ntawm slag los ntawm molten aluminium.Common slag tshem tawm cov neeg sawv cev muaj xws li cov hauv qab no:
Sodium Chloride (NaCl): Cov ntsev no pab txhawm rau tshem tawm cov slag, ua kom yooj yim tshem tawm.
Potassium Chloride (KCl): Zoo li sodium chloride, poov tshuaj chloride pab nyob rau hauv lub disintegration ntawm slag, txhawb nws kev sib cais los ntawm molten txhuas.
Fluoride-raws li Fluxes: Cov fluxes no pab tshem tawm cov oxide impurities thiab kuj txo qhov melting point ntawm slag, ua kom yooj yim tshem tawm.

III.Refining Agents

Refining agents yog siv los txhim kho qhov zoo ntawm molten aluminium los ntawm kev tshem tawm impurities xws li hydrogen gas thiab inclusions.Qee cov tshuaj ua kom zoo dua qub muaj xws li hauv qab no:

Hexachloroethane (C2Cl6): Qhov sib xyaw no decomposes nyob rau hauv molten aluminium, tso cov roj chlorine reacts nrog impurities, ua kom yooj yim tshem tawm.
Nitrogen Gas (N2): Thaum cov pa roj nitrogen yog npuas los ntawm cov molten aluminium, nws yuav pab tshem tawm cov roj hydrogen thiab suav nrog.
Argon Gas (Ar): Zoo li nitrogen, argon roj tuaj yeem siv los tshem tawm cov pa roj hydrogen thiab suav nrog los ntawm molten aluminium.

IV.Hlau Silicon

Nws yog xim hlau silicon ntxiv rau molten aluminium raws li cov khoom siv alloying.Qhov sib ntxiv ntawm cov xim hlau silicon txhim kho cov khoom siv kho tshuab ntawm cov khoom kawg, xws li nws lub zog thiab hardness.Tsis tas li ntawd, silicon kuj pab ua kom cov molten aluminium reacting nrog impurities thiab txhawb lawv tshem tawm.

Hauv kev xaus, cov txheej txheem melting ntawm txhuas cov kaus poom yog cov txheej txheem nyuaj tab sis ntxim nyiam uas muaj ntau yam tseem ceeb thiab cov kauj ruam.Aluminium melting rauv, txawm nws yog reverberatory, crucible, los yog induction rauv, ua hauj lwm raws li lub caj qaum ntawm cov txheej txheem, enabling lub transformation ntawm cov khoom txhuas rau hauv lub xeev molten.Slag tshem tawm cov neeg ua haujlwm, xws li sodium chloride thiab potassium chloride, ua lub luag haujlwm tseem ceeb hauv kev tshem tawm cov impurities thiab ua kom ntseeg tau qhov zoo ntawm aluminium molten.Refining agents, zoo li hexachloroethane thiab nitrogen gas, ntxiv txhim kho qhov zoo los ntawm kev tshem tawm cov pa roj hydrogen thiab suav nrog.Qhov sib ntxiv ntawm cov xim hlau silicon raws li cov khoom siv alloying tsis tsuas yog txhim kho cov khoom siv kho tshuab ntawm cov khoom kawg nkaus xwb tab sis kuj tseem pab rau cov txheej txheem refining.Thaum kawg, ua npuas ncauj ceramic lim pab hauv qhov kawg purification ntawm molten aluminium, uas ua rau ib tug huv thiab zoo dua cov khoom kawg.Kev nkag siab txog cov ntsiab lus tseem ceeb thiab cov kauj ruam no muab kev pom zoo rau cov txheej txheem zoo tshaj plaws tom qab kev tsim khoom thiab rov ua dua tshiab ntawm txhuas cov kaus poom.