Aluminium yog lub teeb thiab mos tsis-ferrous hlau uas oxidizes yooj yim heev nyob rau hauv cov huab cua. Yog li ntawd, tib neeg tuaj nrog kev daws teeb meem: cov txheej txheem aluminium anodizing, uas loj hlob ib txheej tiv thaiv ntawm nws qhov chaw kom nws ruaj khov, thiab nws tuaj yeem dyed nyob rau hauv txhua hom xim ntxoov ntxoo, uas yog tiag tiag pleasing rau lub qhov muag.
Lub hauv paus ntsiab lus ntawm aluminium anodizing yog tsim kom zoo nkauj thiab tiv thaiv txheej ntawm cov khoom ua los ntawm txhuas thiab nws cov alloys. Cov txheej txheem ntawm kev tsim cov yeeb yaj kiab aluminium oxide ntawm txhuas yog siv ncaj qha tam sim no ntawm qhov txaus voltage los ntawm qhov tsim nyog sulfuric acid electrolyte. Hauv kev teeb tsa no, cov khoom txhuas ua raws li cov anode, thaum lwm cov khoom siv ua cathode. Muaj aluminium profiles, tom qab tau hluav taws xob rau qee lub sijhawm, maj mam tsim cov oxide txheej ntawm qhov xav tau tuab.
Tom qab cov yeeb yaj kiab raug tsim, tsuas yog qee qhov txhuas nrog nws cov xim ntuj uas tsis xav tau kev kho mob, cov kauj ruam tom ntej yog xim. Feem ntau hais lus, cov xim aluminium feem ntau poob rau hauv hom hauv qab no:
1. Organic xim
2. Cov xim tsis muaj kuab lom
3. Electrolytic xim
4. Electroplating xim
Tom ntej no, peb yuav tham txog cov hauv paus ntsiab lus, qhov zoo thiab qhov tsis zoo, thiab kev siv cov xwm txheej ntawm feem ntau siv cov xim organic thiab xim electrolytic:
1. Electrolytic coloring zaj duab xis yog ua los ntawm cov pob tshab anodized zaj duab xis uas tsim los ntawm thawj electrolysis hauv sulfuric acid. Cov yeeb yaj kiab anodized yog xim electrolytically nyob rau hauv cov tshuaj uas muaj hlau ntsev siv alternating tam sim no (tseem hu ua Secondary electrolysis film). Cov huab cua tsis kam, lub teeb tsis kam, thiab kev pabcuam lub neej ntawm electrolytic coloring film yog zoo dua li cov organic dye films, thiab nws lub zog noj thiab cov nqi xim yog qis dua tag nrho cov xim xim. Tam sim no, nws tau dav siv rau xim architectural aluminium profiles, tab sis cov xim xaiv tau txwv, feem ntau tsuas yog suav nrog cov khoom qub tooj liab, dub, kub, thiab maroon. Tsis tas li ntawd, nws tsis yooj yim los tswj cov txheej txheem.
2. Organic coloring: Organic coloring yog raws li adsorption txoj kev xav ntawm cov khoom. Adsorption tuaj yeem muab faib ua lub cev adsorption thiab tshuaj lom neeg adsorption. Hauv kev lag luam aluminium profiles, lub cev adsorption tshwm sim thaum cov molecules los yog ions yog adsorbed ntawm electrostatic rog, thaum tshuaj adsorption tshwm sim los ntawm tshuaj zog. Kev sib xyaw ua ke ntawm ob qhov no ua rau cov xim organic, uas feem ntau ua tiav ntawm qhov kub thiab txias. Vim tias anodic oxide zaj duab xis muaj qhov porosity siab thiab muaj zog adsorption muaj peev xwm, lawv tau yooj yim siv cov organic dyes. Txoj kev no tso cai rau cov xim nrawm, xim ci, thiab ua haujlwm yooj yim. Tom qab cov xim, kev kho sealing kom ntseeg tau tias cov dye ruaj khov nyob rau hauv cov yeeb yaj kiab qhov pores, txhim kho cov yeeb yaj kiab tiv thaiv corrosion thiab stain tsis kam, tso cai rau cov xim zoo nkauj mus ntev. Nws yog qhov tsim nyog rau ntau cov khoom siv txhuas uas tsis yog siv rau sab nraum zoov, cov khoom siv hauv tsev aluminium, thiab cov khoom siv zoo nkauj. Cov tsos tuaj nyob rau hauv ntau yam xim vibrant, txaus siab rau cov neeg niaj hnub kev zoo nkauj saj thiab txhawb kev lag luam kev sib tw ntawm cov khoom. Organic coloring muaj ib co yam ntxwv thiab yuav tsum tau rau cov oxide zaj duab xis:
1. Cov oxide zaj duab xis txheej yuav tsum muaj porosity txaus.
2. Cov phab ntsa sab hauv ntawm lub qhov hws yuav tsum tuav ib theem ntawm kev ua si.
3. Aluminium anodized nyob rau hauv sulfuric acid ua rau ib tug tsis muaj xim thiab ntxeem tau zaj duab xis, ua rau nws haum rau dyeing.
4. Lub oxide zaj duab xis txheej yuav tsum yog ib tug tej thickness; ib txheej nyias tuaj yeem tsuas yog xim lub teeb heev.
5. Cov yeeb yaj kiab nyuaj anodized thiab cov uas ua los ntawm cov pa chromic acid oxidation tsis haum rau cov organic dyeing.
6. Cov txheej txheem oxide zaj duab xis yuav tsum ua kom tiav, zoo ib yam, thiab tsis muaj khawb, xuab zeb qhov, pitting, lossis lwm yam tsis xws luag.
7. Cov yeeb yaj kiab nws tus kheej yuav tsum muaj cov xim uas tsim nyog thiab tsis muaj qhov sib txawv ntawm cov metallographic, xws li cov nplej tsis sib xws lossis kev sib cais hnyav. Yog li ntawd, aluminium alloys muaj qee yam yuav tsum tau ua thiab; Yog hais tias cov khoom xws li silicon, magnesium, manganese, hlau, tooj liab, los yog chromium siab dhau lawm, oxide zaj duab xis tuaj yeem tig dull, ua rau muaj xim txawv thaum dyed.
