Dab tsi ntawm steel yog smau400aw?

1. Cov ntaub ntawv faib tawm thiab cov qauv

Thawj tus qauv: Japanese muaj cov qauv muaj kev lag luamJIS G3114(Huab cua-resistant kub-rolled steel).

Thoob Ntiaj Teb Sib Xws:

Corten a(ASTM A242, USA)

S355j0wp(EN 10025-5, Tebchaws Europe)

09cupcrni-a(GB / T 4171, Suav teb).

Ntaus: High-zog tsawg-alloy steel (hsla)nrog kev txhim kho cov cua nab kuab corrospher tsis kam.

2. Tshuaj Siv Tshuaj & Cov Khoom Siv Neeg Kho Tshuab

Cov tshuaj lom neeg muaj pes tsawg leeg (%)

Cov Khoom Siv Neeg Kho Tshuab

Paib lub zog: Ntau dua lossis sib npaug nrog 400 MPa

Lub zog tensile: 490-610 MPa

Elongation: Ntau dua los yog sib npaug rau 18% (50 hli gauge ntev)

Kev Cuam Tshuam: Loj dua los yog sib luag rau 27J ntawm 0℃(Charpy V-NotC).

3. Corrosion Kuj Siv Hluav Taws Xob

Tiv thaiv Patina Tsim:

Tsim cov tuab, cov tshuaj tsis muaj xeb Txheej (feooh) thaum raug rau ntub / qhuav mus los, thaiv cov pa oxygen ntxiv / noo noo.

Alloy cov ntsiab (Cu, CR, P) kuaj cov xeb ruaj khov.

Corrosion tus nqi: 2-8x qeeb dua carbon hlau nyob deb nroog / Nroog Umospheres.

4. Cov ntawv thov tseem ceeb

Cuab Yeej Siv Hluav Taws Xob: Txuas hniav, kis cov yees, cov tsheb ciav hlau tsheb ciav hlau.

Kev ua tsev: Facades, duab puab (kev ua kom zoo nkauj xeb).

Xa xov: Cov thawv xa khoom, txoj kev tiv thaiv loj.

5. Qhov txwv & kev txiav txim siab tshwj xeeb

Tsis tsim nyog rau:

Submerged / constant ntub dej (piv txwv li, underwater qauv).

Siab acidic (ph<4) or alkaline (pH >10) ib puag ncig.

Kub>400 degree(Patina degrades).

Vuam: Yuav tsum muaj cov kev kho mob tom qab weld (tannic acid / primers) los kho corrosion tsis kam nyob rau hauv cov cheeb tsam kub-cuam tshuam.

6. Kev sib piv nrog lwm cov Weathering Steels