Kuaj tau lub neej seem ntawm Q460NH cov huab cua cov qauv hlau
Txhawm rau ntsuas cov kev pab cuam uas seem ntawm Q460nd tus qauv, ua ke ntawmTsis yog-kev sim ua txhaum (NDT), tsom xam ib puag ncig, thiab kev ua qauv kwv yeesyuav tsum ua haujlwm. Hauv qab no yog txoj hauv kev zoo:
1. Kev Pom Kev Ntsuam Xyuas & PATINA SECCEATION
Txheeb xyuas xeb txheej ruaj khov:
A Cov khaub ncaws hnav, cov lus qhia(tsaus xim av / txiv kab ntxwv) qhia txog kev tiv thaiv zoo.
Flaky, Porous xeblossiskev daiqhia kom nrawm corrosion.
Ntsuas cov dej xeb nkag tob: Siv calipers lossis ultrasonic tuab gauges los piv nrog thawj tuab.
2. Cov kev sim ua txhaum cai (ndt)
Kev Kuaj Ultrasonic (ut): Ntsuas phab ntsa thickness poob hauv thaj chaw tseem ceeb (piv txwv, pob qij txha, welds).
Eddy kev sim tam sim no: Txheeb xyuas qhov chaw sib nraus lossis cov flasurface subsurface.
3D scanning / logar: Saib xyuas cov txheej txheem txheej txheem ntawm lub sijhawm.
3. Ib puag ncig corrosivate
ISO 9223 Kev Sib Tw:
Npaum ib puag ncig (piv txwv li, C3 rau ntug dej hiav txwv, C5 rau ntug hiav txwv / Muaj).
Ntau dua corrosivate xav tau lub neej.
Chloride / so₂ sib xeem:
Kev ntsuas ntawm xeb cov qauv ntsuas kom muaj nuj nqis paug paug.
4. Corrosion tus nqi ntsuas
Corrosion Cov Ntaub Ntawv:
Q460nd hauv cov me me (C3) ib puag ncig: ~ 0.01-0.03 mm / xyoo.
Nqaum / Muaj (C5): ~ 0.05-0.1 mm / xyoo (xav tau kev txo qis).
5. Khoom siv ntsuas & kuaj sim
Xim hlau dua: Tshuaj xyuas microstructure decadation (piv txwv li, grain ciam conrosion).
Tensile / Cov Tshuaj Ntsuam Xyuas: Txheeb xyuas cov khoom uas muaj cov neeg kho tshuab hluav taws xob thiab cov khoom qub.
6. Kwv yees ua qauv
Finite elite tsom xam (fea): Simulates kev cuam tshuam rau kev cuam tshuam corrosion.
Cov cuab yeej Ai: Siv cov ntaub ntawv keeb kwm rau kev kwv yees lifespan (piv txwv li,NASA Corrosion Age A Nraj Qauv).
7. Cov Qauv & Cov Qauv Txais
Tsawg kawg nkaus tuab: Txhais los ntawm cov qauv tsim (piv txwv li,GB 50017Rau cov qauv hlau).
Ua tsis tiav Harbors:
20% thickness tsis nyob rau hauv load-bear tswv cov tswv cuab → kev kho qhov tseeb.
Severe pitting (>1 hli tob) → cov qauv hloov.
Txij Nkawm Lus Taw Qhia
Tsawg-pheej hmoo (ruaj khov Patina,<0.02 mm/year): Kev kuaj xyuas txhua xyoo.
High-risk (pitting, >0.05 mm / xyoo):
Ua ntaub ntawvinhibitive koob(xws li, zinc-cov primers nplua nuj) rau thaj chaw tseem ceeb.
Muab ciaCorrosion Sensorsrau kev tshuaj xyuas lub sijhawm tiag tiag.
Tus yam ntxwv: Q460NH choj Girder nrog 10 hli thawj tuab, 0.05 mm / xyoo kev corrosion hauv C4 ib puag ncig, thiab ib qho 6 hli yam tsim nyog muaj:
Rau qhov tseem ceeb ntawm kev tsim kho, sib txuasNdt + twv ua qauvTxhua txhua 3-5 xyoos los hloov kho nyiaj txiag lifespan.
