1. Ua ntej-Kev Kho Mob: Foundation for Uniform Patina
Kho tshuab ntxuav
Sandblasting: Txoj kev siv ntau tshaj plaws rau cov khoom lag luam. Siv cov nplua txhuas oxide grit (80-120 mesh) ntawm qhov tsis tshua muaj siab (0.2-0.4 MPa) kom tshem tawm cov nplai zeb, xeb, thiab cov roj seem. Lub hom phiaj nto roughness:Rab 3-5 μm- qhov kev ntxhib los mos no muab qhov chaw nucleation rau kev loj hlob ntawm patina yam tsis muaj qhov sib sib zog nqus khawb uas nqus dej.
Hlau Txhuam: Haum rau qhov me me lossis kov -ups. Siv ib lub mos stainless hlau txhuam txhuam kom tsis txhob muaj kev puas tsuaj; zoo tagnrho rau tshem tawm lub teeb nto kab mob tom qab fabrication.
Tshuaj Degreasing
So cov khoom nrog isopropyl cawv los yog tus neeg sawv cev nruab nrab kom tshem tawm cov roj los ntawm kev txiav, khoov, lossis tuav. Roj residues thaiv oxidation, ua rau patchy, lub teeb -xim xim ntawm qhov kawg patina.
Yaug kom huv si nrog dej huv thiab huab cua- kom qhuav tag- cov dej seem ua rau thaj chaw muaj xeb.
2. Active Patina Acceleration: Shorten Natural Weathering Time
Standard Accelerator Formulation (Dej-Based, Tsawg-Toxicity)
Cov khoom tseem ceeb: 2-5% ferric chloride, 1-3% tooj liab sulfate, kab organic acid (kom kho pH rau 3-4). Qhov no ua rau ib puag ncig corrosion (ntsev, noo noo, CO₂) thiab txhawb kev tsim cov ntom ntom, tooj liab- nplua nuj patina txheej (主要成分是 FeOOH 和 Cu₂O).
Daim Ntawv Thov & Txheej Txheem
Siv lub accelerator sib npaug ntawm cov tshuaj tsuag lossis txhuam hniav- xyuas kom tag nrho cov npoo, welds, thiab cov chaw so (cov no yog siab heev - thaj chaw muaj kev pheej hmoo rau qhov tsis sib xws).
Kho qhov chaw hauv ib puag ncig tswj:kub 20-30 degree, txheeb ze av noo 70-90%. Tig qhov chaw txhua 12 teev kom ntseeg tau tias txhua qhov chaw raug cov dej noo thiab oxygen.
Tom qab 3-5 hnub, yaug qhov chaw nrog dej huv kom tshem tawm cov seem accelerator ions- qhov no tiv thaiv dhau - xeb thiab xauv rau hauv cov xim liab doog - xim av patina.
3. Passivation & Sealing: Khaws Patina Ntev
Breathable Sealant Txheej (pom zoo)
Siv cov fluorocarbon-raws li pob tshab breathable sealant. Nws nkag mus rau patina lub ntxeem tau cov qauv los thaiv cov ntsev thiab noo noo nkag mus, thaum cia cov hlau "ua pa" (tiv thaiv blistering los yog tev). Qhov no txuas ntxiv patina kev pab cuam lub neej los ntawm 2-3 xyoos yam tsis tau zais cov hlau rustic zoo nkauj.
Daim ntawv thov txheej txheem: Txau ib txheej nyias, txheej (ntub zaj duab xis tuab 10-15 μm) tom qab nrawm patina qhuav tag.
Passivation rau siab -Corrosion Environments
Rau qhov chaw raug tshuaj ntsev hnyav, siv cov chromate -dawb passivation agent tom qab yaug. Qhov no tsim cov yeeb yaj kiab tiv thaiv nyias ntawm patina nto, ntxiv inhibiting kev ntxhov siab corrosion cracking (SCC).
4. Tom qab-Kev Kho Mob Kho: Txhawb Patina Uniformity
Lub Sij Hawm Pib (Thawj 1–3 Lub Hlis Tom Qab-Kev teeb tsa): Yaug qhov chaw txhua hli nrog cov dej siab tsawg - kom tshem tawm cov plua plav, cov noog poob, lossis cov pob zeb hauv av. Tsis txhob haus cov kua qaub / alkaline uas ua rau lub patina.
Ntev -Term Care: Rau cov khoom sib khi, rov ua dua lub tshuab ua pa txhua 2-3 xyoos. Rau cov khoom tsis raug kaw, cov khawb me me yuav ua rau nws tus kheej -kho lub sijhawm thaum cov hlau ua rau ib puag ncig.
