Cov ntsiab lus tseem ceeb ntawm Patina Evolution & Xim Stability
Pib theem (0–6 lub hlis): Lub zeb nplai (dub grey / dub) huab cua tawm mus, thiab cov hlau ua ib qho xoob, tsis sib xws ntawm txiv kab ntxwv - xim av xeb txheej raws li tooj liab, chromium, thiab npib tsib xee alloy cov ntsiab lus pib cuam tshuam nrog ya raws thiab oxygen.
Maturation theem (6-12 lub hlis): Ib tug ntom, adherentreddish-xim av patina(cov khoom tseem ceeb: -FeOOH, tooj liab- nplua nuj hydroxycarbonates) cov ntaub ntawv. Cov patina no yog cov hlau "tiv thaiv tiav" thiab nws cov xim stabilizes nyob rau theem no.
Ntev -lub sij hawm (10+ xyoo): Cov laus patina darkens me ntsis mus rau ib tug sib sib zog nqus russet / brownish -liab dhau lub sij hawm tab sis tsis ploj, tev, los yog poob nws cov xim siv- nws tsuas yog tsim ib tug ntau dua hnub nyoog, zoo li zoo li.
Tshaj tawm rau cov ntsiab lus: Cov cheeb tsam uas muaj dej ncaj qha / tshav ntuj tuaj yeem tsim cov xim liab me ntsis, thaum qhov chaw ntxoov ntxoo / qhov tsis muaj cua yuav muaj lub suab xim av tsaus nti (qhov no txawm tawm ntau dua 1-2 xyoos raws li patina puv puv).
Cov pa phem / nroog ib puag ncig: Hauv cheeb tsam kev lag luam / nroog uas muaj SO₂ siab dua los yog plua plav, patina yuav muaj qhov tsaus me ntsis, matte tiav; nyob rau hauv cov cheeb tsam nyob deb nroog, nws tseem yog ib tug brighter reddish-xim av- ob leeg nyob ruaj khov thiab tsis -fading.
Qhov chaw paug: Roj, roj, lossis zeb nplai seem seem ntawm cov hlau tuaj yeem ua rau patchy patina (tso los ntawm pre- kev txhim kho sandblasting rau qib Sa2.5).
Cov dej tsis zoo / qhov cua: Cov dej sawv ntsug lossis cov dej tsis muaj dej yuav ua rau tsaus, streaky xeb (tiv thaiv los ntawm kev tsim cov dej ntws thiab 5-10 hli huab cua sib txawv ntawm lub façade thiab lub tsev substrate).
Galvanic corrosion kuj: Siv cov pa roj carbon steel fasteners (es tsis yog 316 stainless hlau) ua rau xeb streaks (yooj yim kho los ntawm kev siv cov fasteners sib xws).
Yuav Ua Li Cas Ua Kom Cov Hnav Hnav, Tsis yog -Fading Patina ntawm ASTM A588 Facades
Ua ntej -installation nto prep: Sandblast tag nrho cov hlau qhov chaw kom tshem tawm cov nplai zeb, roj, thiab cov kab mob (tseem ceeb rau kev tsim patina).
Tsim kom muaj dej / qhov cua: Cov vaj huam sib luag façade loj dua los yog sib npaug li 3℃thiab tawm hauv huab cua kom tsis txhob ya raws.
Siv cov khoom siv sib xws: Fasten nrog 316 stainless hlau bolts / rivets thiab zam kev sib cuag nrog cov hlau tsis sib xws (xws li, txhuas, cov pa roj carbon steel).
Kev saib xyuas tsawg kawg nkaus: Yaug lub façade nrog dej tshiab 2-3 zaug hauv thawj xyoo kom tshem tawm cov plua plav; tsis tas yuav tsum tau pleev xim, txheej, lossis tshuaj kho mob (cov no tuaj yeem cuam tshuam kev tsim patina).
