Rau tej yaam num ze ntawm ntug dej hiav txwv, xaiv cov khoom tsim nyog yog qhov tseem ceeb heev. Ib lo lus nug tshwm sim: tuaj yeem S235J2W Corten steel, paub txog nws cov huab cua tiv thaiv thiab txias- thaj tsam tawv, tiv taus qhov hnyav ntawm ntug dej hiav txwv? Cov lus teb yuav tsum muaj kev saib tsis zoo tshaj nws cov peev txheej txheem.
Cov Lus Teb luv luv: Cov Kev Sib Tw Tseem Ceeb
Thaum S235J2W ua tau zoo heev nyob rau hauv av thiab muaj huab cua, nws cov kev ua tau zoo nyob rau hauvncaj qha ntug dej hiav txwv ntsev tsuag ib puag ncig raug cuam tshuam thiab tsis pom zoo rau kev siv tseem ceeb, liab qab.Lub npe "J2" lav qhov toughness ntawm -20℃tab sis tsis txhim khu nws corrosion kuj tiv thaiv chlorides.
Yog vim li cas ntsev tsuag yog ib qho teeb meem rau Corten Steel
Cov txheej txheem tiv thaiv ntawm Corten steel cia siab rau kev tsim cov txheej ruaj khov, cov kab xeb (patina). Cov ntug hiav txwv dej nquag cuam tshuam cov txheej txheem no:
Chloride Attack: Cov huab cua ntsev (chlorides) yog cov corrosive heev thiab hygroscopic. Lawv nyob ntawm cov hlau, nqus dej noo, thiab tsim kom muaj kev sib txuas ntxiv, cov hluav taws xob electrolyte uas txhawb kev xeb sai thiab tiv thaiv cov patina ruaj khov los ntawm kev tsim.
Tsis txaus ziab voj voog: Kev tiv thaiv patina yuav tsum hloov lub sijhawm ntub thiab qhuav kom ruaj khov. Nyob rau hauv cov huab cua qhuav, qab ntsev, qhov chaw tseem ntub dej ntev dhau lawm, ua rau muaj kev cuam tshuam tsis tu ncua tsis muaj kev tiv thaiv passivation.
Accelerated & Uneven Corrosion: Qhov tshwm sim yog tus nqi corrosion uas tuaj yeem ua tau ntau zaus ntau dua nyob rau hauv ib puag ncig sab hauv. Cov txheej xeb tuaj yeem dhau los ua xoob, flaky, thiab tsis yog- tiv thaiv, ua rau tsis sib xws ntawm qhov degradation thiab poob ntawm cov khoom tuab.
Kev Ntsuas: Ua Nws Ua Haujlwm yog tias koj yuav tsum tau ua
Yog tias qhov kev tsim vaj tsev zoo nkauj ntawm Corten xav tau rau txoj haujlwm ntug dej hiav txwv, nws tsuas yog siv tau nrog kev txiav txim siab engineering thiab txais kev saib xyuas ntau dua. Kev vam meej nyob ntawmtswj kev raug thiab siv cov tswv yim tiv thaiv.
1. Cov tswv yim siv tseem ceeb:
Kev deb yog koj tus phooj ywg: Kev ua tau zoo txhim kho qhov kev ncua deb ntawm ntug dej hiav txwv. Kev siv tau yooj yim dua rau cov qauvteem rov qab ob peb puas meters los ntawm qhov siab -tide kab, qhov twg ntsev deposition qis dua.
Zone-Raws li Tsim: Tsis txhob siv liab qab S235J2W hauvthaj chaw txaws los yog thaj chaw ntawm cov dej ntsev ncaj qha. Nws siv yuav tsum txwv rauthaj chaw atmosphericsaum toj no cov cheeb tsam.
Tsim kom muaj dej & ziab: Tus tsim yuav tsum tshem tawm cov cuab yeej ya raws. Txhua qhov chaw yuav tsum tau nqes kom ceev cov dej ntws tawm, thiab cov ntsiab lus yuav tsum tso cai rau huab cua ntau tshaj plaws los txhawb kom qhuav.
2. Kev tiv thaiv tseem ceeb:
Nce Corrosion Allowance: Ntxiv cov tuab tuab ntxiv rau cov hlau (xws li, 2-3 hli lossis ntau dua) kom faus corrode hla tus qauv tsim lub neej thaum tswj kev ua haujlwm zoo.
Cov Txheej Txheem Tiv Thaiv (Qhov Kev Txhim Kho Zoo Tshaj Plaws): Txoj kev ua tau zoo tshaj plaws yog siv asiab -kev ua tau zoo txheej txheej. Qhov no feem ntau muaj xws li:
Kev npaj nto rau Sa 2½ (ze - dawb hlau tawg).
Zinc-nplua nuj epoxy primer.
Epoxy intermediate thiab polyurethane topcoats, nrog rau tag nrho cov zaj duab xis qhuav thickness feem ntau tshaj 300 microns.
Tsis tu ncua: Cia siab thiab npaj rau kev tshuaj xyuas tsis tu ncua thiab ntxuav kom huv kom tshem tawm cov ntsev thiab cov khib nyiab uas cuam tshuam cov dej noo.
Kev Pom Zoo Kawg: Ib Txoj Kev Coated
Rau ib puag ncig ntawm ntug hiav txwv, txoj hauv kev txhim khu kev qha thiab kev lag luam feem ntau yog kho S235J2W ua lub siab- zoo substrate es tsis yog cov hlau tsis muaj huab cua.
Txoj kev uas pom zoo yog:
Siv cov qib S235J2Wrau nws cov yam ntxwv thiab weldability.
Siv lub zog, muaj ntawv pov thawj marine txheej txheej txheemlos ntawm qhov pib.
Txaus siab rau cov txiaj ntsig ntawm cov qauvntawm cov hlau thaum txheej txheej muab kev kwv yees, ntev - tiv thaiv ntsev.
Kev sim siv nws liab qab nyob rau hauv ib cheeb tsam ntawm ntug dej hiav txwv yuav ua rau kom ceev corrosion, nce nqi lifecycle, thiab tej zaum yuav ua tsis tau ntxov ntxov. Rau qhov tseem ceeb infrastructure nyob rau hauv cov cheeb tsam no,txheem carbon steel nrog tshwj xeeb marine txheejlos yogkub-dip galvanizingfeem ntau muab kev ua tau zoo dua, kev kwv yees ntau dua.
