1. Ua ntej-Kev Kho Mob: Kev Tu Kom Huv Huv (Core Foundation)
Kev tu thawj zaug: Degreasing thiab derusting
Rau roj-stained nto: Sivdej -raws li alkaline degreaser(pH 10-12) rau tshuaj tsuag/soak tu (kub 40-60 degree, lub sij hawm 15-30min), ces yaug nrog dej huv thiab cua qhuav kom tshem tawm cov roj, roj, thiab organic kuab paug; zam cov kuab tshuaj degreasers kom tsis txhob muaj cov organic seem.
Rau xeb / zeb nplai: TxaisSA2.5 kev lag luam sandblasting(qib haum tshaj plaws rau Q355NHB) nrog steel grit / quartz xuab zeb li abrasive; Qhov saum npoo roughness tom qab sandblasting yuav tsum ncav cuag3.0-5.0 hli(zoo rau patina adhesion). Rau cov khoom me me lossis cov qauv tsim, sivpassivation ntawm pickling(10-15% dilute hydrochloric acid + corrosion inhibitor) yog tias sandblasting tsis muaj, ces nruab nrog 5% sodium bicarbonate tov thiab yaug kom huv si.
Secondary tu: tshem tawm cov seem thiab ziab
Tom qab sandblasting / pickling, tshem tawm cov plua plav abrasive, acid residue thiab deg noo noo nrogqhuav compressed cua (roj-dawb thiab dej-dawb); xyuas kom cov substrate nto qhuav tag (cov ntsiab lus noo noo tsawg dua lossis sib npaug li 5%) hauv 4 teev kom tsis txhob muaj xeb (tseem ceeb hauv qhov siab -cov av noo ntawm ntug dej hiav txwv).
2. Kev kho tseem ceeb: Accelerated Uniform Patina Formation (Core Anti-Corrosion Step)
Accelerator xaiv: Siv weathering steel tshwj xeebinorganic silicate -raws li accelerator(cov khoom tseem ceeb: hlau ntsev, manganese ntsev, silicate, corrosion inhibitor) - zam chloride- muaj cov accelerators uas ua rau pitting corrosion.
Txoj kev tsim kho: Txaisairless spray txheej(zoo tshaj adhesion) los yog cov menyuam txheej rau cov chaw tiaj tus; txheej thickness yog tswj ntawm30-50 μm, thiab tshuaj tsuag tusyees yam tsis muaj cov txheej txheem ploj los yog sib sau ua ke. Rau cov txheej txheem nyuaj (piv txwv li, welds, fab), siv txhuam txhuam kom paub meej tias tag nrho.
Kho tej yam kev mob: Muab cov hlau kho rau hauv qhov chaw sab nraum zoov (kub 5-35 degree, av noo 40-80%); Ua kom cov av noo me ntsis hauv thawj 3 hnub (txhaj dej huv 1-2 zaug hauv ib hnub) txhawm rau txhawb cov tshuaj tiv thaiv ntawm cov accelerator thiab substrate, thiab tsis txhob ntxuav los nag ncaj qha lossis raug tshav ntuj.
Txuj kev tsim nyog: Cov ntawv saum npoo auniform, compact reddish -xim av patinanrog tsis muaj xoob xoob xoob xoob, tsis muaj pinholes, thiab cov xeb txheej adheres (dhau daim kab xev tev: tsis muaj xeb txheej poob).
3. Post-Kev Kho Mob: Kev Tiv Thaiv Kev Tiv Thaiv (Xov Patina & Tiv Thaiv Cov Tshuaj Tsuag)
Sealer xaiv: Siv weathering steel tshwj xeebdej -raws li polyurethane breathable sealerlos yogfluorocarbon sealer(cov ntsiab lus ntau dua lossis sib npaug li 30%); lub sealer yuav tsum muajsiab chloride ion kuj, dej repellency thiab UV kuj, thiab zoo compatibility nrog patina txheej (tsis tev los yog bubbling).
Kev tsim kho txheej txheem: Tom qab lub patina tau ruaj khov (2-4 lub lis piam tom qab kev kho mob nrawm), polish lub npoo me ntsis nrog 200-mesh sandpaper kom tshem tawm cov xeb xeb, ces ntxuav thiab qhuav; thov 1-2 lub tsho tiv no los ntawm cov tshuaj tsuag / cov menyuam txheej, nrog rau tag nrho cov yeeb yaj kiab qhuav tuab tswj ntawm40-60 μm(lub tsho tiv no thib ob yog siv tom qab thawj lub tsho tiv no yog 80% qhuav, ncua 2-4 teev).
Curing xav tau: Kho nyob rau hauv chav tsev kub rau 7 hnub (tag nrho curing); zam kev sib cuag nrog dej los yog ntsev tsuag thaum lub sij hawm kho kom paub meej tias lub sealer ua ib zaj duab xis tas li.
4. Kev kho tshwj xeeb rau qhov tsis muaj zog (Kev Pabcuam Hauv Zos)
Welds / txiav ntug: Tom qab kev sib tsoo thiab deburring (sib tsoo rau R Ntau dua lossis sib npaug ntawm 2 hli puag ncig), rov ua dua ib txheej nyias ntawm patina accelerator (10-20 μm) thiab lub tsho tiv no ntxiv ntawm sealer (qhuav zaj duab xis thickness +20 μm) los txhawb kev tiv thaiv.
Bolted kev sib txuas: Ua ntej sib dhos, thovanti-corrosion paste (tooj liab roj los yog inorganic anti-corrosion paste)nyob rau saum npoo, thiab ntxiv cov roj hmab los yog iav fiber ntau gasket los tiv thaiv crevice corrosion; Tom qab sib dhos, kaw lub taub hau ntsia hlau thiab txiv ntoo nrog sealer los thaiv cov ntsev tsuag infiltration.
Qhov/notches: Siv cov txhuam txhuam kom siv cov accelerator thiab sealer kom tag nrho cov kev pab cuam, thiab zam cov ces kaum ntse kom tiv thaiv kom tsis txhob ya raws.
5. Tom qab-Txoj Kev Txhim Kho & Kev Kho Hauv Zos (Ntev -Lub Sij Hawm Corrosion Resistance)
Kev saib xyuas tsis tu ncua: Kev coj uapeb lub hlis twg deg tshuaj xyuasthiabkev saib xyuas txhua xyoo; tshem tawm cov plua plav saum npoo, cov plua plav thiab cov ntsev tso nrog dej huv (tsawg- cov tshuaj tsuag siab) txhua lub hlis twg, thiab tsis txhob siv cov txhuam hniav tawv los khawb cov sealer / patina txheej.
Kev kho hauv zos: Rau cov khoom puas (xws li, sealer tev, patina ntog, khawb los ntawm sab nraud quab yuam), ua raws li cov kauj ruam: ① Sib tsoo qhov chaw puas kom nthuav tawm cov substrate huv si; ② Rov ua dua patina accelerator (yog tias lub substrate raug); ③ Kov nrog cov sealer los kho cov txheej txheem tiv thaiv, kom ntseeg tau tias qhov chaw kho yog flush nrog qhov chaw nyob ib puag ncig thiab tsis muaj pob qij txha pom tseeb.
Sealer reapplication: Rov ua dua lub tsho nyias nyias ntawm sealer (20-30 μm) txhua 2-3 xyoos raws li qhov chaw saum npoo av (xws li, sealer aging, gloss poob); qhov no tuaj yeem ua haujlwm tau zoo rau kev pab cuam lub neej ntawm cov txheej txheem tiv thaiv nyob rau hauv ntug dej hiav txwv kev lag luam ib puag ncig.
6. Kev kho cov txheej txheem kho rau cov ntug dej hiav txwv sib txawv
Nce qib sandblasting rauSA3 dawb hlau sandblastingrau ib tug huv substrate nto.
Ua kom cov sealer qhuav zaj duab xis thickness rau80-100 μm(2-3 tsho tiv no) thiab ntxiv ib txheej ntawm anti-chloride ion primer ntawm patina thiab sealer.
Shorten lub sealer reapplication voj voog rau1-2 xyoosthiab ua kev tshuaj xyuas saum npoo txhua hli.
