Anodizing: txhuas thiab nws cov alloys yog siv ua anodes, thiab cov hlau lead lossis graphite yog siv ua cathodes. Hauv qee qhov concentration (xws li sulfuric acid, oxalic acid, chromic acid, thiab lwm yam) conductive kua, los ntawm kev siv voltage thiab cov nyhuv ntawm tam sim no hluav taws xob, ib qho tuab (8-12um) txheej yog tsim rau ntawm qhov chaw ntawm lub tuam txhab, uas muaj cov khoom siv kho tshuab zoo, hardness, corrosion tsis kam, hnav tsis kam, rwb thaiv tsev, adsorption thiab lwm yam.
1. Degreasing: organic solvent degreasing, dej raws li emulsification ntxuav tus neeg sawv cev degreasing, electrochemical degreasing.
2. Kev txhuam tshuaj lom neeg: Ntxiv tshem tawm cov av ntawm qhov chaw ntawm txhuas thiab nws cov hlau nrog phosphoric acid, thiab tshem tawm cov zaj duab xis oxide ntuj ntawm qhov chaw ntawm cov hlau txhuas, yog li ntawd cov txhuas substrate raug rau kom yooj yim tom qab anodization. Tib lub sijhawm, kev txhuam kuj muaj cov nyhuv ntawm kev sib npaug, uas tuaj yeem ua kom du ntawm qhov chaw ntawm cov khoom ua haujlwm tom qab sandblasting, thiab qhov zoo ntawm qhov chaw zoo dua.
3. Tshem tawm zaj duab xis dub: Tom qab phosphorylation, zaj duab xis dub-grey (hlau xws li tooj liab, nickel, manganese, hlau, silicon, thiab lwm yam, uas tsis yaj hauv phosphoric acid) tseem nyob rau ntawm qhov chaw ntawm qhov workpiece, thiab tom qab ntawd kho nrog nitric acid.
4. Oxidation: Cov txheej txheem ntawm kev tsim cov zaj duab xis oxide ntawm cov khoom txhuas (anode) nyob rau hauv qhov kev ua ntawm cov hluav taws xob siv nyob rau hauv cov electrolyte sib xws thiab cov xwm txheej tshwj xeeb. Anodic oxidation, yog tias tsis tau teev tseg, feem ntau txhais tau tias Anodizing sulfuric acid.
5. Kev Xim Xim: Kev xim xim yuav tsum tau ua tam sim ntawd tom qab lub anode thiab tsis txhob ntev dhau. Tom qab oxidation, ua tib zoo yaug cov kua qaub seem nrog dej txias (zam kom tsis txhob kub nce thiab daim nyias nyias yuav kaw tau).
6. Kev kaw: dej kub kub kaw cov qhov hws, thiab alumina sib xyaw nrog cov dej molecules los tsim cov hydrates, tsim cov siv lead ua.
7. Kev ziab: Muab cov khoom tso rau hauv qhov cub nrog qhov kub ntawm qhov cub teeb tsa ntawm 70 ° C. Qhov kub ntawm qhov kaw yuav tsum tsis txhob siab dhau, txwv tsis pub zaj duab xis yuav tawg. Ua ntej ntxuav, nws yuav tsum ntxuav nrog dej kub kom ua rau qhov kub ntawm qhov workpiece nce ntxiv kom tsis txhob tawg vim qhov workpiece txias dhau.
Lub sijhawm tshaj tawm: Lub Ib Hlis-09-2019