1. Pib
A709 CORTEN STEEL Phaj, tseem hu uaA709 Weathering HlaulossisASTM A709 STEEL, yog tsim los tawm tsam cov atmospheric corrosion thiab txo cov kev saib xyuas hauv cov ntawv thov sab nraum zoov.
Nws corrosion tsis kam yog vim ib qho tshuaj lom neeg tshuaj muaj pes tsawg leeg uas ua rau tus kheej - tiv thaiv oxide txheej. Nkag siab lubTus Quav Tsim Kho Me Methiab ntev - teb ruaj khov yog qhov tseem ceeb rau cov engineers sivA709 cov qauv hlauHauv cov choj, vaj tse, thiab cov qauv kev lag luam.
2. Corrosion Mechanism
| Ib feem | Lub luag haujlwm hauv corrosion tsis kam | Cov ntsiab lus raug (%) |
|---|---|---|
| Tooj Liab (Cu) | Txhawb txoj kev tsim ntawm cov txheej tiv thaiv ruaj khov | 0.20–0.50 |
| Chromium (cr) | Txhim kho corrosion txheej adherence thiab kev sib dhos | 0.40–0.60 |
| Npib tsib caug (ni) | Txhim kho kev nruj ntawm oxide txheej thiab slows sib sib zog nqus corrosion | 0.25–0.45 |
| Phosphorus (p) | Ua kom muaj atmospheric corrosion tsis kam | Tsawg dua los yog sib npaug rau 0.025 |
| Cov pa roj carbon (c) & manganese (mn) | Muab kev siv zog thaum tswj hwm corrosion stability | 0.18–0.23 / 0.80–1.25 |
Soj ntsuam:Lub synergy ntawm Cu, CR, thiab ni hauvA709 Weathering HlauKho kom nrawm ntawm cov tuab tuab, ua kom xeb ntev uas tiv thaiv cov hlau hauv qab los ntawm kev ua haujlwm oxidation ntxiv.
3. Rust txheej txheej txheem txheej txheem
| Lub sam thiaj | Txog kawg | Nta | Cuam tshuam rau cov hlau |
|---|---|---|---|
| THAWJ Axidation | 1-3 lub hlis | Lub txiv kab ntxwv ci ci | Thaum Ntxov Corrosion, tsis muaj kev ua kom muaj kev puas tsuaj |
| Kev Txhim Kho Txheej | 3-6 hlis | Tsaus nti rau reddish - xim av | Rust txheej pib tiv thaiv hlau |
| Raws cai | 6-12 hlis | Ntom, sib txig patina | Tsawg kawg nkaus corrosion; Txij Nkawm - dawb |
Kev Npaj: ASTM A709 STEELUa ib qho kev tiv thaiv cov txheej xeb sai dua hauv cov huab cua noo thiab qeeb qeeb hauv cov huab cua qhuav, tab sis kev ruaj khov yog ua tiav nyob rau hauv ib xyoos.
4. Corrosion Tus Nqi Sib Piv
| Hlau Hom | Corrosion tus nqi (MM / Xyoo) | Kev Pabcuam Lub Neej (Xyoo) | Sau ntawv |
|---|---|---|---|
| A709 CORTEN STEEL Phaj | 0.01–0.02 | 50–80 | Tus kheej - tiv thaiv cov txheej xeb |
| Xim Turbon Steel | 0.05–0.08 | 20–30 | Yuav tsum tau rov pleev xim |
| Galvanized steel | 0.02–0.03 | 40–50 | Txheej yuav degradade dhau sijhawm |
Kev tsom xam: A709 cov qauv hlauSaib xyuas tus nqi qis dua piv rau cov hlau roj carbon hlau thiab muab nws lub neej kev pabcuam ntev dua, ua rau nws zoo tagnrho rau cov phiaj xwm sab nraum zoov.
5. Ib puag ncig qhov cuam tshuam rau xeb ruaj khov
Vaum noo:Ua kom nrawm pib pata txiav txim tab sis tsis yog qhov kev txiav txim siab ntev - tsis muaj kev tiv thaiv.
Cov pa phem / kev lag luam cua tshuab:Me ntsis nce corrosion, tab sisA709 Weathering Hlautseem tiv thaiv.
Cov Ntsev Ntsev (Thaj Chaw Nqaum):Tej zaum yuav tsum muaj cov kev tsim qauv ntxiv xws li tso dej kom tiv thaiv kom tsis txhob muaj dej thiab pittingized.
6. Daim ntawv thov ntsiab lus
Txuas hniav thiab cov qauv kev loj:Girders Main, Lawj Hlau, thiab Kev Kub
Tsev Vaj Tse:Façades, Cov txheej txheem thav duab, thiab dai kom zoo nkauj
Muaj cov txheej txheem:Yees, tso tsheb hlau luam, thiab sab nraum zoov platform
TusRust -} tiv taus steel phajCov khoom ntawmA709 CORTEN STEEL PhajUa kom ntseeg tau tsawg dua thaum tswj cov qauv txheej txheem kev ntseeg thiab kev ua kom zoo nkauj.
7. Xaus
A709 CORTEN STEEL Phaj / A709 Weather Hlau / ASTM A709 Hlautso siab rau kev sib xyaw ntawm CU, CR, thiab NI los ua aruaj khov, tiv thaiv kab xeb.
Tus nqi corrosion yog tsawg kawg (0.01-0.02 mm / xyoo), muabA709 cov qauv hlauIb lub neej pabcuam ntawm 50-80 xyoo.
Tsim nyog tsim qauv rau kev tso kua mis thiab kis tau nrawm dua pata tsim thiab txhim kho ntev {}}} lub sij hawm ruaj khov.
Qhov no ua rauRust -} tiv taus steel phajQhov zoo tshaj plaws rau choj, hauv nroog Architecture, Kev Siv Khoom Siv Kev Lag Luam, thiab lwm cov kev tsim kho sab nraum zoov uas ob qho tib si durabilation uas ob qho tib si durabe thiab zoo nkauj yog qhov tseem ceeb.