Cov huab cua me me (nyob deb nroog, suburban cheeb tsam uas muaj cov pa phem tsawg thiab cov av qis) yog thawj daim ntawv thov scenarios rau Q235NH thiab S355K2W Corten Steels. Ob leeg tso siab rau kev tiv thaiv patina tsim rau kev tiv thaiv corrosion, tab sis lawv qhov kev ua tau zoo sib txawv vim muaj kev sib txawv ntawm cov tshuaj muaj pes tsawg leeg thiab cov qauv khoom siv. Rau cov kws tsim khoom thiab cov neeg yuav khoom ntsuas tus nqi thiab ua haujlwm ntev, cov lus nug tseem ceeb tshwm sim: Q235NH qhov kev tiv thaiv corrosion piv rau S355K2W li cas? Raws li cov ntaub ntawv kuaj corrosion thiab GB / EN tus qauv, cov ntsiab lus xaus yog qhov tseeb:Nyob rau hauv cov huab cua me me, ob qib muaj kev txhim khu kev txhim kho corrosion (2-8 npaug ntawm cov pa roj carbon zoo tib yam), tab sis S355K2W muaj kev ruaj ntseg me ntsis zoo dua patina thiab muaj kuab paug siab, thaum Q235NH ua tau zoo ntawm cov nqi tsim nyog.. Hauv qab no yog ib qho yooj yim, kev txiav txim siab tawg.
Cov ntsiab lus tseem ceeb: Corrosion Resistance Tsav Tsheb hauv Me Me
Hauv cov huab cua me me, Corten Steel qhov kev tiv thaiv corrosion nyob ntawm ob yam tseem ceeb: kev sib koom ua ke ntawm kev tiv thaiv-corrosion ntsiab thiab qhov ntom ntawm cov tsim patina. The main corrosion threats-moisture, oxygen, and trace pollutants-are mild, so the steel's ability to form and maintain a dense, adherent patina directly determines its service life. Ob qho Q235NH (GB / T 4171) thiab S355K2W (EN 10025-5) tso siab rau Cu, Cr, thiab P rau kev tsim patina, tab sis lawv cov ntsiab lus thiab cov koom haum pab tsim kev sib txawv.
Core Difference: Tshuaj muaj pes tsawg leeg & Patina Performance
Lub hauv paus ntawm qhov sib txawv corrosion kuj yog nyob rau hauv cov ntsiab lus ntawm kev tiv thaiv -corrosion ntsiab thiab cov khoom ua, uas cuam tshuam rau patina ntom thiab stability:
1. Kev sib piv tshuaj lom neeg
Q235NH (GB/T 4171): Muaj Cu (0.20-}0.50%), Cr (0.30-1.20%), thiab P (0.07-0.15%)-lub ntsiab trio rau huab cua tsis kam. Tsis muaj cov khoom tiv thaiv corrosion ntxiv, ua kom cov nqi tsim khoom tsawg.
S355K2W (EN 10025-5): Khaws Cu (0.20-}0.50%) thiab Cr (0.30-1.20%) zoo ib yam li Q235NH, tab sis nrog kev tswj nruj dua cov ntsiab lus tsis huv (S Tsawg dua lossis sib npaug rau 0.015%) thiab optimized grain qauv ntawm TMCP (thermo-mechanical tswj dov). Qee qib kuj muaj cov kab Ni, txhim kho patina adhesion.
2. Patina Tsim & Stability
qw 235n: Ua ib qho kev tiv thaiv patina hauv 1-2 xyoo nyob rau hauv ib puag ncig me me, qeeb corrosion mus rau 1/3-1/2 tus nqi ntawm Q235 carbon hlau zoo tib yam. Lub patina yog ntom tab sis me ntsis resistant rau qee zaus cov kab mob acidic pollutants.
S355K2W: Patina cov ntaub ntawv nyob rau hauv ib lub sij hawm zoo sib xws (1-1.5 xyoo) tab sis muaj ib tug finer, compact qauv vim optimized ua. Nws zoo dua tiv thaiv kab mob (xws li, me ntsis acid nag) thiab noo noo nkag mus, nrog corrosion tus nqi 10-15% qis dua Q235NH nyob rau lub sij hawm ntev raug (5+ xyoo).
Kev sib piv kev ua tau zoo nyob rau hauv ib puag ncig me me
Hauv qab no yog kev sib piv cov txiaj ntsig ntawm cov ntsuas kev ua haujlwm tseem ceeb, raws li 5-xyoo kev kuaj pom sab nraum zoov hauv thaj chaw hauv nroog:
Corrosion Rate: Q235NH muaj qhov nruab nrab corrosion ntawm 0.03-0.05 hli / xyoo; S355K2W yog 0.025-0.04 hli / xyoo. Ob leeg zoo hauv qab 0.1 hli / xyoo pib rau kev pab cuam mus sij hawm ntev.
Patina Durability: Q235NH's patina tej zaum yuav qhia me me flaking nyob rau hauv cov cheeb tsam nrog cov av noo hloov raws caij nyoog; S355K2W's patina tseem nyob twj ywm, tsis muaj flaking lossis discoloration tseem ceeb.
Kev Pabcuam Lub Neej: Q235NH muaj 15-20 xyoo kev pabcuam tsis muaj coated; S355K2W txuas mus rau 20-25 xyoo, ua tsaug rau kev ruaj ntseg zoo dua patina.
Kev siv tswv yim & Cov txheej txheem xaiv
Qhov kev ua tau zoo sib txawv ncaj qha qhia qhov xwm txheej- kev xaiv tshwj xeeb, ntsuas tus nqi thiab kav ntev:
Xaiv Q235NH yog tias: Cov peev nyiaj yog qhov tseem ceeb, thiab qhov project muaj qhov yuav tsum tau ua haujlwm tsawg dua lossis sib npaug li 15 xyoo (piv txwv li, cov qauv ib ntus, cov neeg saib xyuas nyob deb nroog, qis-load lub tsev facades). Nws muab kev tiv thaiv corrosion txaus rau qhov chaw me me ntawm 15-20% tus nqi qis dua S355K2W.
Xaiv S355K2W yog: Ntev- lub sij hawm durability (Ntau dua los yog sib npaug li 20 xyoo) los yog tej lub sij hawm muaj kuab paug paug (xws li, suburban cheeb tsam ze ntawm lub teeb kev lag luam) yuav tsum tau. Nws superior patina stability txo cov txij nkawm zaus, offsetting tus nqi pib dua.
Thaj Av: Tsis tas yuav tsum muaj cov tshuaj tiv thaiv ntxiv -corrosion txheej hauv cov huab cua me me. Kev tu dej tshiab tsis tu ncua (ib lub hlis twg) txhawm rau tshem tawm cov plua plav yuav txuas ntxiv lub neej kev pabcuam ntawm ob qib.
Lus Cim Tseem Ceeb: Tshaj Tawm Ib puag ncig me me
Nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias qhov kev sib txawv ntawm qhov kev ua tau zoo nthuav dav sab nraum cov cua me me: S355K2W tuaj yeem ua rau muaj kev ua qias tuaj nruab nrab los yog cov tshuaj tsw qab ntsev tsawg, thaum Q235NH yuav tsum tau coatings nyob rau hauv cov xwm txheej zoo li no kom tsis txhob muaj kev kub ntxhov.
Hauv cov ntsiab lus, Q235NH thiab S355K2W ob leeg ua tau zoo nyob rau hauv ib puag ncig me me, nrog S355K2W muab cov txiaj ntsig zoo hauv kev ua haujlwm ntev thiab Q235NH hauv tus nqi-kev ua tau zoo. Xaiv cov qib zoo yog nyob ntawm qhov kev xav tau ntawm lub neej ua haujlwm thiab kev txwv nyiaj txiag, ua kom pom kev sib npaug ntawm kev ua haujlwm thiab tus nqi.
