Dab tsi yog qhov sib txawv hauv corrosion tsis kam ntawm s3555j0w thiab s355j2w? -} kev paub

1. Sib Piv Ntawm Tshuaj Muaj Zog (Qhov Tseem Ceeb rau Corrosion Kuj)

Cov Ntsiab Lus Alloy Cov Ntsiab Lus (Cu, CR) uas txiav txim siab huab cua zoo ib yam nkaus hauv phosphorus (p) me ntsis uas tau txhim kho corrosion:

S355J0W: Cov ntsiab lus phosphorus siab tshaj plaws yog hais meej meej0.03%Hauv cov qauv (EN 10025-5). Phosphorus pab ua kom nrawm ntawm qhov chaw ntev ntawm Patina thiab txhim kho kom tsis kam mus rau chloride rau chloride ions (piv txwv li, hauv marine cua).

S355J2W: Cov qauv tsis tau teeb tsa cov ntsiab lus tseem ceeb rau phosphorus. Hauv kev siv cov ntsiab lus, nws cov ntsiab lus phosphorus feem ntau zoo ib yam li S355j0w (nyob ib ncig ntawm cov qib tshwj xeeb S355j0wP (p ≤ 0.20%).

Qhov sib txawv no txhais tau tias S355j0w yuav muajmarginally zoo corrosion tsis kamNyob rau hauv high {{0} av noo, ntsev {- cov kab mob ntug dej hiav txwv), tab sis tsis tshua muaj cuam tshuam rau cov kev siv sab nraum zoov dav dav.

2. Kev Cuam Tshuam Kub (tsis muaj qhov cuam tshuam ncaj qha rau corrosion tsis kam)

Ib qho tseem ceeb sib txawv ntawm ob qib nyob hauv lawv cov kev cuam tshuam nyuaj yuav tsum tau tab sis tseem ceeb rau kev nkag siab lawv tag nrho cov kev ua tau zoo:

S355J0W: Yuav tsum muaj kev cuam tshuam kev sim ntawm0 ° CTxhawm rau kom ntseeg tau qhov tawv txaus hauv kev qis qis -} qhov chaw ib puag ncig.

S355J2W: Yuav tsum muaj kev cuam tshuam kev sim ntawm-20 ° C, qhia tau zoo dua qis - kub todualness thiab haum rau cov cheeb tsam txias (xws li siab} lations latitude lossis thaj chaw Alpine).

Nws yog qhov tseem ceeb kom nco ntsoov tias qhov kev cuam tshuam ntsuas kub tsuas yog xav txog cov hlau lub peev xwm los tawm tsam brittle begiture ntawm tsawg kub. Nws tsis hloov kho tus nqi ntawm nto li saum npoo patina lossis qhov kev ruaj ntseg ntawm cov yeeb yaj kiab oxide, yog li nws tsis muaj kev cuam tshuam ncaj qha rau corrosion tsis kam.

3. Cov tswv yim corrosion kev ua haujlwm nyob rau ib puag ncig ib puag ncig

Hauv feem ntau tiag - Cov xwm txheej ntiaj teb sib txawv ntawm S355J0W thiab S355J2W yog NationalGigible:

Cov huab cua me me (thaj chaw nyob deb nroog): Ob qib kawm ua ib qho paub tab, kev tiv thaiv patina tsis pub dhau 1-3 xyoos, nrog ib xyoos txhua xyoo corrosion ntawm kwv yees li 0.005-0.0 hli mm / xyoo. Tsis muaj qhov sib xws sib txawv hauv kev tiv thaiv kev tiv thaiv xeb lossis lub neej kev pabcuam.

Harsh qhov chaw (chaw muaj / ntug dej hiav txwv): Txawm nyob rau hauv ib puag ncig nrog siab sulphur dioxide (formes cov pa taws) lossis ntsev ua haujlwm txhua xyoo ntawm ob pawg qib ntawm 0.03-0.05 mm / xyoo. Tus me ntsis phosphorus zoo ntawm s355j0w tuaj yeem txo cov xeb nyob hauv ib cheeb tsam los ntawm 5-10%, tab sis qhov no tsis yog qhov tseem ceeb txaus los hloov cov ntaub ntawv xaiv rau feem ntau cov haujlwm.

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