1. Tshuaj lom neeg sib xyaw (raug)
| Lub ntsiab | Cov ntsiab lus (%) | Lub luag haujlwm hauv corrosion tsis kam |
|---|---|---|
| C (carbon) | Tsawg dua los yog sib npaug rau 0.10% | Ua kom muaj kev sib tw weldability, txo qis brittleness |
| Si (silicon) | 0.20–0.50% | Txhawb Nqa R xeb Txheej Ruaj |
| Mn (manganese) | 0.20–0.50% | Txhim kho lub zog, kho cov leej faj |
| P (phosphorus) | 0.07–0.12% | Tseem ceebRau Kev Tiv Thaiv Patina |
| S (Sulphur) | Tsawg dua los yog sib npaug rau 0.035% | Tsawg kawg kom tsis txhob brittleness |
| CU (Tooj) | 0.25–0.45% | Qhov tseem ceebrau xeb adhesion & corrosion tsis kam |
| CR (chromium) | 0.30–0.65% | Txhim kho oxidation tsis kam |
| Ni (npib tsib) | 0.25–0.50% | Txhim kho kev nruj & corrosion tsis kam |
2. Cov yam ntxwv tseem ceeb
Corrosion Kuj:
Cov ntaub ntawv antom, tus kheej kho txheej xeb (patina)thaum raug huab cua.
2-8 XA tiv taus ntau duaNtau dua cov pa roj carbon hlau hauv kev lag luam / marine ib puag ncig.
Cov Khoom Siv Neeg Kho Tshuab:
Paib lub zog: Ntau dua los yog sib npaug345 MPa(Zoo ib yam li ANTM A588).
Lub zog tensile: 470-630 MPa.
Elongation: Ntau dua los yog sib npaug22%.
Hwj txwv:
Zoo (cov pa roj carbon tsawg & cov roj av tswj cov ntsiab lus p / s).
Kev sivCov hluav taws xob qis (E7018-W)rau cov txiaj ntsig zoo tshaj plaws.
3. Cov qhab nia sib npaug
| Lub hom phiaj | Xws li qib | Piv tau |
|---|---|---|
| Tuam Tshoj (GB) | Q355NH | Ze li zoo ib yam, me ntsis sib txawv cr / ni tshuav nyiaj li cas |
| ASTM (USA) | A588 Qib K | Ze heev hauv composition & kev ua tau zoo |
| En (Tebchaws Europe) | S3555j0wp / s355j2wp | Zoo sib xws huab cua cov khoom |
| JIS (Nyiv) | Spa-H (Jis G3125) | Sib piv CU-P-CR-Ni System |
4. Kev thov
Txuas hniav & txoj kev loj(Tsis kam de-icing ntsev).
Thauj khoom ntim & tsheb ciav hlau tsheb ciav hlau(Lub sijhawm ntev ntev).
Cov Cuab Yeej Txhim Kho(zoo nkauj xeb).
Kev Hloov Kho Cov Tshuab & Offshore Platforms(Marine Kuj).
5. Qhov zoo tshaj cov pa roj carbon hlau
✔ Qis txij nkawm(Tsis tas yuav tha xim yuav tsum tau tom qab patina daim ntawv).
✔ Siv sijhawm ntevnyob rau hauv cov chaw hnyav.
✔ Nqi-Zoovs. Stainless hlau rau kev siv sab nraum zoov.
6. Txwv tsis pub
Tsis rau submerged / tas mus li ntub ib puag ncig(zoo dua rau cov atmospheric raug).
Thawj zaug xeb dejTej zaum stain thaj chaw (xav tau kev npaj ua kom tsis zoo).
