1. Cov Ntsiab Cai ntawm Patina Thickness Control
Natural patina tsim qeeb thiab tsis sib xws (thickness ranges ntawm 0.05-0.2 mm tom qab 1-2 xyoos nyob rau hauv ib puag ncig ntub).
Artificial control accelerates lossis inhibit oxidation kom ua tiav lub hom phiaj tuab (feem ntau0.03-0.3 hli, qhov zoo tshaj plaws rau kev tiv thaiv corrosion thiab zoo nkauj).
2. Cov txheej txheem tseem ceeb los tswj Patina Thickness
Txoj Kev 1: Artificial Patina Acceleration (Feem ntau rau Thickness Control)
Ua ntej-kev kho mob: Ua ntej tshem tawm cov nplai zeb nplais, xeb, thiab cov kab mob ntawm cov xuab zeb blasting los yog hlau txhuam los tsim kom muaj qhov huv si, ntxhib hauv paus (tseem ceeb rau kev sib xyaw oxidation).
Daim ntawv thov Accelerator: Coated steel nto nrog aHuab cua steel patina accelerator(ib qho tshuaj uas tswj tau cov tshuaj chloride, sulfate, thiab tooj liab ions). Lub accelerator concentration ncaj qha tswj oxidation tus nqi:
Tsawg concentration (1-3%): qeeb oxidation, haum rau nyias patina (0.03-0.08 hli) rau cov hniav panels.
Nruab nrab concentration (3-5%): Nruab nrab oxidation, zoo tagnrho rau cov qauv tiv thaiv patina (0.08-0.15 hli) rau cov khoom siv.
High concentration (5–8%): oxidation ceev, siv rau tuab patina (0.15–0.3 mm) rau ntug hiav txwv dej los yog industrial cheeb tsam.
Environmental Regulation: Muab cov hlau kho rau hauv ib chav nrogtswj kub (20-30 degree)thiabHumidity (70-90%). Cov av noo ntau dua ua rau oxidation, thaum qhov kub thiab txias tiv thaiv tsis sib xws los ntawm qhov kub thiab txias.
Tswj Lub Sij Hawm: Tso tseg cov tshuaj tiv thaiv los ntawm kev yaug nrog dej huv thiab ziab kom qhuav thaum lub hom phiaj tuab mus txog ( ntsuas los ntawm lub ntsuas tuab). Qhov no tiv thaiv tshaj -oxidation (uas ua rau xoob, flaky patina).
Txoj Kev 2: Huab cua ntuj nrog Environmental Control
Kev kho av noo: Npog cov hlau nrog cov yeeb yaj kiab ua pa kom khaws cov dej noo (ua kom cov tuab tuab) los yog muab tso rau hauv qhov dej zoo - qhov cua nkag (qhov loj hlob qeeb).
Nto Sealing: Tom qab ncav lub hom phiaj thickness, thov apob tshab breathable sealant(xws li, fluorocarbon resin) kom cais cov hlau los ntawm cov pa oxygen thiab noo noo, txwv tsis pub oxidation ntxiv thiab kho cov patina thickness mus tas li.
Txoj Kev 3: Txo Thickness Rau Tshaj -Oxidized Patina
Lub Teeb Mechanical Txhuam Txhuam: Use a soft stainless steel wire brush to remove the loose outer layer, retaining the dense inner patina (target thickness: 0.1–0.15 mm).
Tshuaj Stripping: Siv cov tshuaj dilute phosphoric acid (1-2%) kom yaj patina ntau dhau, ces yaug kom huv si kom tsis txhob muaj cov kua qaub seem.
