Los ntawm Alumina rau Molten Aluminium
Aluminium ntawv ntau lawm pib nrog bauxite, uas yog refined rau hauv alumina los ntawm cov txheej txheem Bayer. Tom qab ntawd cov alumina raug txo kom huv si aluminium hauv Hall-Héroult electrolytic cells, qhov twg cov hluav taws xob ncaj qha cais aluminium ntawm oxygen. Cov hlau molten yog alloyed nrog cov ntsiab lus xws li magnesium, silicon, tooj liab los yog manganese raws li qib hom phiaj, thiab cov muaj pes tsawg leeg raug txheeb xyuas los ntawm spectrometric tsom xam ua ntej casting. Kev tswj xyuas qhov kub thiab txias, nrog rau kev degassing thiab pom, tshem tawm cov hydrogen thiab cov khoom siv uas yuav ua rau muaj qhov tsis xws luag hauv daim ntawv kawg.
DC Casting ntawm Rolling Ingots
Lub alloyed yaj yog cam khwb cia rau hauv loj duab plaub dov ingots siv direct chill casting. Dej-cov pwm txias ua kom cov hlau los ntawm sab nraud sab hauv, tsim cov qauv zoo thiab zoo ib yam. Ingot qhov ntev sib txawv los ntawm zeb, tab sis raug slabs hnyav ntau tons thiab sawn mus rau ntev, scalped kom tshem tawm nto segregation, thiab homogenized ntawm kub kub kom yaj alloying ntsiab tusyees. Homogenization kuj txo cov kev ntxhov siab sab hauv thiab txhim kho kev ua haujlwm ntawm lub ingot thaum lub sij hawm tom qab dov.
Kub Rolling
Homogenized ingots yog preheated rau kwv yees li 400 mus rau 550 degrees Celsius thiab dhau los ntawm ib tug reversing kub zeb thiab ces ib tug tandem zeb kom txo thickness ntawm ob peb puas millimeters mus rau ob peb millimeters. Kub dov tawg raws li - nrum grain qauv thiab ua ib tug ca, workable strip nrog ib tug yam ntxwv zeb finish nto. Cov hlua kub yog coiled los yog txiav rau hauv daim hlau, ces txias nyob rau hauv kev tswj tej yam kev mob. Cov theem no feem ntau txiav txim siab qhov flatness, nto zoo thiab sab hauv soundness ntawm cov khoom kawg.
Txias Rolling
Txias dov ntxiv txo cov strip thickness ntawm ambient kub kom ua tau raws li qhov tseeb qhov ntsuas, nruj dua thickness kam rau ua thiab txhim kho nto tiav yuav tsum tau los ntawm kev ua lag luam. Vim hais tias txias ua hauj lwm hardens cov txhuas, intermediate annealing yog siv ntawm passes rau soft tempers xws li O, thaum tswj zaum kawg dov txo ua strain- hardened tempers zoo li H14 thiab H18. Rolling roj lubricate lub sawb thiab tom qab ntawd muab tshem tawm hauv cov kab tu. Cov tshuab txias txias niaj hnub siv cov ntsuas ntsuas tsis siv neeg tswj thiab cov qauv tswj kom ua kom tuab thiab flatness nyob rau hauv nruj txwv.
Kev kho deg thiab ua tiav
Tom qab dov, lub sawb hla dhau los ntawm kev ntxuav thiab degreasing kab, tom qab ntawd xaiv cov kev ua haujlwm tiav xws li kev sib tw rau kev sib tw, embossing, txhuam hniav, lossis tshuaj lom neeg thiab kev kho mob anodized. Cov coils tseem tuaj yeem hlais rau hauv qhov dav dav lossis txiav rau hauv cov nplooj ntawv ntawm kev txiav - mus rau - kab ntev nrog precision shear blades. Cov yeeb yaj kiab tiv thaiv lossis ntawv sib cuam tshuam yog siv rau qhov chaw tiv thaiv saum npoo, thiab cov khoom kawg tau ntim nrog kev tiv thaiv ntug thiab xa tawm- qib wrapping.
Kev Tswj Xyuas Kev Tswj Xyuas Kev Tswj Xyuas Kev Tswj Xyuas Kev Ua Haujlwm Zoo
Kev ruaj ntseg zoo khiav los ntawm txhua theem ntawm cov txheej txheem. Online thickness gauges saib gauge tsis tu ncua, kuaj ultrasonic kuaj pom qhov tsis xws luag hauv daim hlau, tensile kuaj xyuas cov khoom siv kho qhov muag, thiab automated optical tshuaj ntsuam xyuas qhov chaw rau khawb, yob cov cim thiab stains. Cov xov tooj cua sov, cov ntawv pov thawj thiab cov ntaub ntawv pov thawj kev sib tw nrog txhua pawg, tso cai rau cov neeg yuav khoom los xyuas kom meej tias cov khoom xa tuaj sib xws rau cov hlau, kub thiab qhov ntev ntawm cov lus txiav txim.
FAQ
Q: Dab tsi yog qhov txawv ntawm kub dov thiab txias dov aluminium ntawv?
A: Cov ntawv kub dov yog tsim los ntawm qhov kub thiab txias thiab feem ntau muaj qhov hnyav dua thiab cov matte zeb tiav, thaum cov ntawv txias dov tau txo qis dua ntawm chav tsev kub rau cov ntsuas nyias, nruj dua thiab ua kom zoo dua. Txias dov kuj ua rau muaj ntau yam ntawm tempers.
Q: Npaum li cas xws li H14 ua tiav?
A: H14 txhais tau hais tias cov khoom yog strain- hardened los ntawm txias dov mus rau kwv yees li ib nrab - mob, thiab tsis muaj kev kho cua sov ntxiv tom qab dov. Tus lej tom qab H qhia txog qib hardening, nrog H18 sawv cev tag nrho nyuaj.
Q: Vim li cas annealing siv thaum lub sij hawm txhuas ntawv?
A: Annealing restores ductility tom qab txias ua hauj lwm los ntawm kev tso cai recrystallization ntawm grain qauv. Nws yog siv los ntawm dov hla dhau thiab ua haujlwm kawg thaum lub qhov muag O temper xav tau rau kev sib sib zog nqus los yog sib sau.
Q: Cov teeb meem dab tsi tuaj yeem tshwm sim hauv aluminium ntawv tsim?
A: Feem ntau cov teeb meem muaj xws li ntug tawg, dov cov cim, khawb, oxide inclusions, pinholes nyob rau hauv nyias ntawv ci thiab sab hauv porosity. Zoo yaj zoo, zoo yob tu thiab kev soj ntsuam hauv online txo cov kev pheej hmoo loj.
Q: Yuav ua li cas tus neeg yuav khoom xyuas qhov zoo ntawm cov ntawv txhuas tsim?
A: Cov neeg yuav khoom yuav tsum thov daim ntawv pov thawj zeb kuaj pom cov tshuaj lom neeg muaj pes tsawg leeg thiab cov khoom siv kho tshuab, tshawb xyuas cov thickness thiab flatness kam rau ua raws li tus qauv, thiab teem caij thib peb - tshuaj xyuas ntawm lub zeb ua ntej xa khoom.