Cov nplaim ntawm aluminium alloy phaj yuav tsum tau kho ua ntej tsim thiab xa khoom. Cov tsos ntawm lub ntsej muag tuaj yeem faib ua plaub theem pib: kho ua ntej, anodic oxidation, cathodic oxidation xim thiab txheej organic. Cov txheej txheem tshwj xeeb yog raws li hauv qab no:
1, Kev kho ua ntej, uas suav nrog tsib kauj ruam:
1. Kev kho degreasing: lub hom phiaj yog tshem tawm cov roj nplua nyeem thiab lwm yam av ntawm qhov khoom, yog li txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhav ntawm cov khoom hauv cov txheej txheem ntxuav alkali thiab txhim kho cov khoom oxidized zoo. Feem ntau, sulfuric acid nrog cov ntsiab lus ntawm 5-25% yog siv rau kev kho degreasing, thiab qhov kub degreasing yog 60-80c.
2. Etching kho: lub hom phiaj yog txhawm rau tshem tawm cov av ntawm qhov khoom, tshem tawm cov zaj duab xis ntuj oxide nrog tuab li ntawm 25-1000a ntawm cov khoom ntawm qhov khoom, thiab nthuav tawm qhov saum npoo ntawm lub hauv paus hlau, yog li raws li txhawm rau txhawm rau txhawm rau oxidation du thiab xim. Feem ntau, siv 40-80 ° NaOH tov.
3. Kev kho mob Pickling: lub hom phiaj yog tshem tawm cov khoom xeb dub tawm ntawm cov khoom nto tom qab xeb, thiaj li kom tau txais cov hlau ci ci.
4. Kev kho kom ploj mus: lub hom phiaj yog ua kom cov nplaim ntawm cov khoom siv txhuas lossis cov khoom txhuas ua tsis zoo thiab ua rau cov nplaim tsis ci tom qab kho anodizing los tsim qhov chaw xeb. Feem ntau, siv 20-40c ammonium fluoride tov.
5. Kev kho polishing: txhawm rau tshem tawm cov khoom siv puas thiab xeb me me ntawm cov khoom txhuas thiab txhim kho qhov ua kom du thiab ci qhov tob, kev kho polishing feem ntau xav tau.
2 、 Anodizing kho
Lub hauv paus ntsiab lus: txhuas cathode oxidation yog qhov tseem ceeb ntawm cov dej electrolysis. Thaum cov dej tau electrolyzed, O2 - ions cuam tshuam nrog anodic txhuas los tsim alumina (Al2O3). Feem ntau, sulfuric acid, chromic acid, phosphoric acid thiab oxalic acid tau xaiv los ua cov electrolyte los tsim cov tawv tawv ntxeem tau oxide zaj duab xis hauv sulfuric acid txog li 0C. Cov ntaub ntawv sib txawv muaj kev cuam tshuam loj rau cov yeeb yaj kiab oxide. Rau 6000 series Al Mg Si (6063.6061.6065), nws tuaj yeem tsim tsis tau tsuas yog tiv thaiv cov yeeb yaj kiab oxide, tab sis kuj tseem zas xim oxide zaj duab xis thiab zaj duab xis ci ci. Txawm li cas los xij, rau cam khwb cia txhuas hlau, nws tuaj yeem tsim cov yeeb yaj kiab tiv thaiv oxide, tab sis zas zas xim zaj duab xis tuaj yeem tsim cov xim tuab.
Yog koj xav yuav khoomanodized txhuas phaj, thov hu rau peb.
3, Rau kev kho xim ntawm cathode oxidation, muaj cov hauv qab no:
A: Electrolytic coloring:
Txoj hauv kev yog raws li hauv qab no: cov txheej txheem anodized aluminium alloy yog electrolyzed dua hauv cov electrolyte ntawm cov hlau ntsev, yog li cov cations ntawm hlau ntsev tau tso rau hauv qab txheej ntawm pinhole ntawm oxide zaj duab xis thiab xim. Hauv daim ntawv thov, cov xim tooj liab thiab cov xim dub tuaj yeem tau txais. Feem ntau, kev daws ntsev ntawm Ni, CO thiab Sn yog siv los ua hluav taws xob, feem ntau yog sulfate thiab AC electrolysis.
B: Txoj kev zas xim
Txoj hauv kev yog raws li hauv qab no: muab cov phom anodized aluminium alloy rau hauv cov tshuaj uas muaj cov zas xim, thiab cov pinholes ntawm cov yeeb yaj kiab oxide yuav nqus cov xim thiab xim. Zaj duab xis sulfuric acid yog qhov zoo tshaj plaws rau txoj kev zas xim. Tus neeg sawv cev zas xim yog ammonium ferrous oxalate (dyed rau xim daj) thiab cobalt acetate (tooj liab). Cov qhov yuav tsum tau muab ntim tom qab zas xim. Muaj ob txoj hauv kev:
A: Nickel ntsev ntim: huab cua tsis kam zoo.
B: Kev ntim dej kub npau npau: qhov tsis xws yog tias cov xim zas tau yooj yim kom ntws thaum sib khi, ua rau lub suab tsis sib xws.
4, Kev kho cov organic txheej
Tom qab cathodic oxidation thiab kho xim, txhuas tuaj yeem kho nrog cov txheej txheej organic txhawm rau txhawm rau txhim kho nws qhov kev tiv thaiv xeb thiab kev txhim kho corrosion.
A: Electrostatic tha xim
Atomize txheej nrog cov nplua me me thiab tom qab ntawd tshuab nws mus rau saum npoo ntawm cov khoom txheej kom nws ua cov khoom txuas. Feem ntau, cov txheej txheej tau them rau ntawm cathode ua ntej, thiab 100kV DC qhov hluav taws xob tau siv rau cov khoom siv lo ua cov cathode. Cov txheej txheej feem ntau yog acrylic cob.
B: Electrophoretic pleev xim
Hauv cov kua tshuaj acrylic kua aqueous, cov yeeb yaj kiab oxide tau siv los ua cathode thiab electrolyzed nrog 200V DC qhov hluav taws xob los pleev cov organic zaj duab xis ntawm cov yeeb yaj kiab oxide