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Polishing txheej txheem anodized

Polishing anodized yog los electrolyze cov conductive acidic electrolyte los ntawm tam sim no, thiaj li mus anodize lub txhuas hlau nto constituting lub anode, thiab ib txwm loj hlob ib tug tuab thiab ntom alumina tiv thaiv zaj duab xis nyob rau hauv aluminium nto. Cov oxide zaj duab xis no tsis yog txheej txheej ntxiv thiab yuav tsis tev tawm. Cov oxide zaj duab xis yog pob tshab thiab tsis muaj xim, thiab cov qauv microcrystalline yog hexagonal honeycomb. Nws tuaj yeem tsis tsuas yog siv cov xim ntuj ntawm txhuas los qhia txog qhov muaj zog hlau zoo nkauj, tab sis kuj tseem muaj xim sib npaug hauv cov micropores kom muab cov ntaub thaiv phab ntsa zoo nkauj xim, uas ua rau muaj kev nthuav dav hauv daim ntawv thov kev pom.

Kev ua tau zoo:

Lub anodized aluminium oxide veneer nrog cov qauv tuab oxide zaj duab xis (3um) yuav tsis hloov xim, corrode, anodize lossis xeb rau lub sijhawm ntev. Lub anodized alumina veneer nrog thickened oxide zaj duab xis (10um) tuaj yeem siv sab nraum zoov thiab tuaj yeem raug tshav ntuj ntev ntev yam tsis muaj xim.

yam ntxwv:

Tri acid polished anodized xim aluminium profile yog qhov tsim nyog txhuas profile rau qib siab kho kom zoo nkauj hauv tsev kho kom zoo nkauj, chaw tos txais tsev so, tsev kho mob thiab tsev kawm ntawv. Nws muaj zog hlau zoo nkauj, xim ntau haiv neeg thiab xim stability.

Cov lus piav qhia luv luv ntawm cov txheej txheem ntws:

(1) Degreasing: vim hais tias cov roj stain adhered rau lub extruded txhuas profile thaum lub sij hawm ua, cia thiab tsheb thauj mus los yuav tsim ib tug roj zaj duab xis nyob rau saum npoo ntawm substrate, nyob rau hauv ib tes, nws yuav cuam tshuam rau adhesion ntawm lub nto npog txheej thiab lub hlau nyob rau hauv lub substrate, ntawm qhov tod tes, nws yuav txo qhov firmness ntawm txheej txheej thiab substrate, yog li yuav tsum tau degreasing kev kho mob. Sulfuric acid (H2SO4) yog siv rau kev tshem tawm cov roj, thiab cov ntsiab lus dav dav yog 100g / L. qhov tshwj xeeb concentration yog nyob ntawm cov khoom thiab cov kev xav tau ntawm aluminium profile. Cov kua tank tsis hloov pauv thiab tsuas yog yuav tsum tau rov ntxiv tsis tu ncua ntawm lub sijhawm qub. Raws li cov txheej txheem degreasing yog nqa tawm ntawm chav tsev kub thiab cov kua qaub pos inhibitor ntxiv, qee qhov ntawm cov kua qaub yog tsim los ntawm cov txheej txheem no. Cov txheej txheem no tsim cov kua qaub hloov pauv.

(2) Peb hla kev tu: tom qab tshem tawm cov roj, cov dej ntxuav yog nqa tawm hauv lub tank ntxhua dej. Muaj 3 lub taub dej ntxhua hauv tag nrho, thiab siv txoj kev ntxuav dej countercurrent. Yog li ntawd, acid ntxuav cov dej khib nyiab yog tsim nyob rau hauv cov txheej txheem no.

(3) Alkali corrosion thiab thib ob tu: tshem tawm cov oxide zaj duab xis rau ntawm qhov chaw ntawm txhuas profile los ntawm corrosion ntawm alkali muaj zog. Cov txheej txheem alkali corrosion yog exothermic cov tshuaj tiv thaiv, yog li cov txheej txheem tiv thaiv corrosion tau teeb tsa hauv lub tank alkali corrosion, thiab lub tsho dej txias yog siv los ua kom txias cov kua alkali corrosion. 40g / L sodium hydroxide tov yog siv rau alkali corrosion. Alkali pos huab yuav raug tsim thaum lub sij hawm alkali corrosion thiab yuav nkag mus rau alkali huab cua nqus ntauwd rau kev nqus thiab kev kho kom huv. Tom qab alkali corrosion, nws yuav tsum tau ntxuav nrog dej, ob-kauj ruam tu thiab countercurrent dej ntxuav kom tshem tawm cov residual alkali tov rau saum npoo thiab tsim alkaline ntxuav cov dej khib nyiab.

(4) Neutralization thiab ib-kauj ruam tu: tshauv dai ntawm lub substrate nto tom qab alkali corrosion, yog li 50g / L sulfuric acid tov yog yuav tsum tau rau acid pickling neutralization. Lub hom phiaj ntawm neutralization yog los kho tus nqi pH ntawm lub substrate nto. Txij li cov txheej txheem neutralization yog nqa tawm ntawm chav tsev kub, qhov concentration ntawm sulfuric acid yog tsawg, thiab acid pos inhibitor ntxiv, ib qho me me ntawm cov kua qaub yog tsim nyob rau hauv cov txheej txheem no; Tom qab neutralization, nws yuav tsum tau ntxuav nrog kais dej, thiab txoj kev leaching yog saws los tshem tawm cov residual acid nyob rau saum npoo los tsim kua qaub ntxuav cov dej khib nyiab.

(5) Oxidation thiab kev tu tsev theem nrab: ib qho ntom ntom aluminium oxide zaj duab xis yog tsim rau saum npoo ntawm txhuas los tiv thaiv corrosion. Lub anodizing electrolyte yog 150g / L sulfuric acid. Lub hauv paus ntsiab lus oxidation yog tsim cov pa oxygen thiab hydrogen los ntawm dej electrolysis. Thawj cov pa oxygen reacts nyob rau saum npoo ntawm txhuas profile los ua aluminium oxide zaj duab xis. Nyob rau tib lub sijhawm, thaum hydrogen overflows, sulfuric acid yuav raug coj tawm los tsim cov kua qaub thiab nkag mus rau cov kua qaub-mist nqus ntauwd rau kev kho kom huv.

Qhov kub ntawm oxidation tank kua yuav nce nyob rau hauv qhov kev txiav txim ntawm ncaj qha tam sim no. Yuav kom tswj tau qee qhov kub ntawm lub tank oxidation (tus txheej txheem yuav tsum tau khaws cov kua kub ntawm li 20 ℃), ib qho kev tiv thaiv corrosion yog teem rau hauv lub tank oxidation thiab lub tsho dej yog siv los ua kom txias lub oxidation tank kua. .

Tom qab oxidation, kais dej yuav tsum tau siv los ntxuav. Lub hauv paus ntsiab lus tu yog tib yam li "ob-kauj ruam ntxuav" tom qab alkali corrosion kom tshem tawm cov kua qaub seem ntawm qhov chaw thiab tsim cov kua qaub ntxuav cov dej khib nyiab.

Polish anodized xim ntawm aluminium profile

(6) Dyeing thiab countercurrent tu: raws li cov neeg siv khoom xav tau, aluminium profile yuav tsum tau dyed tom qab oxidation. Raws li cov xim sib txawv, rau dyeing tank yog teem rau hauv qhov project. Lub dyeing yog nqa tawm los ntawm immersion dyeing nyob rau hauv chav tsev kub. Nws yog soaked nyob rau hauv lub dyeing tank rau 1 ~ 3 feeb raws li cov xim tob, thiab ces coj tawm mus rau qhuav. Cov dyes ntawm qhov project yog tsim los ntawm cov hlau complex dyes, dextrin, sodium acetate, thiab lwm yam raws li SGS xeem daim ntawv qhia ntawm cov dye, tsis muaj hnyav hlau xws li txhuas, mercury, cadmium thiab hexavalent chromium tau kuaj pom nyob rau hauv cov xim. Tom qab dyeing, cov dej ntshiab yuav tsum tau siv rau kev ntxuav tam sim no. Cov txheej txheem ntxuav countercurrent tsim cov dej khib nyiab.

(7) Qhov kub thiab txias sealing, nruab nrab kub sealing thiab ob-kauj ruam tu: lub hom phiaj ntawm sealing yog los hloov cov siv lead ua kev npaj ntawm alumina membrane thiab ua rau cov siv lead ua qauv ntawm alumina membrane compact. Nyob rau hauv qhov project no, ib txwm kub sealing thiab nruab nrab kub sealing yuav tsum tau ua raws li dyeing qhov tob ntawm profile, ib txwm kub sealing yuav tsum tau nqa tawm rau lub teeb xim thiab nruab nrab kub sealing yuav tsum tau nqa tawm rau tsaus xim. Nickel acetate yog siv los ua tus pore sealing tus neeg sawv cev. Thaum tus nqi pH yog kwv yees li 5.8, npib tsib xee acetate yog hydrolyzed los ua npib tsib xee hydroxide, uas yog adsorbed ntawm qhov qhib ntawm micropore, uas tuaj yeem ua tiav lub hom phiaj ntawm pore sealing. Qhov nruab nrab kub sealing qhov adopts hluav taws xob cua sov. Muaj ob qhov kev sib khi: ib txwm kub sealing zawj thiab nruab nrab kub sealing zawj. Cov kua groove tsis tas yuav hloov pauv, tab sis tsuas yog yuav tsum tau txuas ntxiv ntxiv rau lub sijhawm qub.

Tom qab qhov nruab nrab kub sealing, lub qhov yuav tsum tau ntxuav ob zaug nrog dej kub kom tshem tawm cov residual npib tsib xee acetate rau saum npoo. Kev ntxuav dej kub siv hluav taws xob cua sov los tswj cov dej kub. Cov txheej txheem no tsim cov dej khib nyiab.

(8) Kev ziab: tshem tawm cov dej noo ntawm qhov chaw sib khi, thiab siv hluav taws xob cua sov kom qhuav.


Post lub sij hawm: Nov-05-2021