Dab tsi yog qhov zoo alloy alloy series rau anodizing oxidation phiaj?
Lub 6xxx series (al-mg-si) yog feem ntau siv vim nws cov lus teb catodizing thiab muaj zog. Ntshiab 1xxx series muaj cov kev coj ua zoo oxidation zoo tab sis muaj cov neeg kho tshuab. Tooj liab-nplua nuj 2xx x series yuav tsum muaj tshwj xeeb chromic kua qaub anodizing kom tiv thaiv corrosion. Lub 5xxx koob ua qauv qhia superior ntsev-txau tsis kam tom qab oxidation tab sis tej zaum yuav tsim cov lus qhia greyish. Kev tsim kho niaj hnub suav nrog hloov kho 6xxx alloys nrog tswj kav hlau cov ntsiab lus (0.15-0.35%) kom txhim kho zas kev nqus.
Yuav ua li cas qhov chaw npaj ua rau qhov zoo ntawm oxidized aluminium daim hlau?
Txhua yam polishing yuav tsum ua tiav ra<0.2μm roughness for decorative applications. Alkaline etching (50-70g/L NaOH at 50°C) removes 3-5μm surface layer to expose fresh aluminum. Electropolishing with phosphoric acid improves reflectivity before hard anodizing. Ultrasonic degreasing eliminates organic contaminants that cause uneven oxidation. A desmutting step using 30% nitric acid is critical after etching to remove intermetallic particles.
Dab tsi tuab ntau yam tuaj yeem ua tiav los ntawm cov txheej txheem oxidation oxidation?
Txheem anodizing tsim 5-25μm zaj duab xis rau cov ntawv kos duab kos duab. Hard anodizing (15-20v, 0-5 Degree) Ua 50-100μm txheej rau kev coj tsis kam. Micro-arc oxidation tsim 10-300μm tej hub txheej nrog 1500hv hardness. Nyias zaj duab xis electrolytic oxidation (tfo) ua tiav ncaj qha 1-5μm tswj rau cov khoom siv hluav taws xob. Txoj kev loj hlob ntawm kev loj hlob feem ntau yog 0.5-1.5μm / feeb nyob ntawm electrolyte messentration.
Kev kho cov tshuaj kho oxidized oxidized oxidized phaj kev ua tau zoo?
Hot water sealing (95-100°C) hydrates the porous layer to improve corrosion resistance. Nickel acetate sealing provides superior dye retention for colored components. Cold sealing with fluorides reduces energy consumption by 60% compared to traditional methods. Chromate sealing offers maximum protection for marine applications but faces environmental restrictions. Advanced plasma electrolytic sealing can achieve hydrophobic surfaces with >150 Degree Dlawb Dej Lub kaum ntse ntse.
Cov kev ntsuam xyuas zoo li cas piv txwv oxidation phaj ua raws li cov qauv muaj kev pab?
Daim txheej tuab tuab yog ntsuas ntawm eddy tam sim no (ISO 2360) lossis Hla-ONTM B487). Kev ntsuas dej ntsev (ASTM B117) ntsuas kev xeb ua kom dhau 1000+ teev. Puas ua kom tsis muaj nuj nqis yog qhov ntau yog los ntawm TABER TEST (CS-10 log, 1000 CYCLES). Xim xwm yeem tshawb xyuas nrog cov paj huam (ΔE<1.5 for architectural grades). Adhesion is verified through tape tests (ISO 2819) and bend tests (180° without cracking).
