Corrosive ib puag ncig-los ntawm me ntsis av mus rau hnyav ntsev tsuag los yog acidic fumes-yog qhov loj tshaj kev hem thawj rau steel lub neej kev pab cuam. Q295NH Corten Steel yog engineered rau huab cua tsis kam, tab sis nws cov kev ua tau zoo nyob rau hauv corrosive chaw txawv heev los ntawm hom thiab qhov hnyav ntawm corrosion. Rau cov phiaj xwm phiaj xwm thiab cov neeg yuav khoom, kev nkag siab yuav ua li cas nws tuav tau raws li qhov sib txawv corrosive yog qhov tseem ceeb kom tsis txhob ua tsis tiav ntxov thiab khib nyiab. Q295NH ua haujlwm raws nraim li cas hauv qhov chaw corrosive? Raws li cov ntaub ntawv kuaj corrosion thiab daim ntawv thov teb, cov ntsiab lus xaus yog qhov tseeb:Q295NH ua tau zoo nyob rau hauv me me-rau- ib puag ncig corrosive nruab nrab tab sis tawm tsam hauv qhov chaw hnyav (siab ntsev, muaj zog acids) yam tsis muaj kev tiv thaiv ntxiv. Hauv qab no yog ib qho yooj yim, kev txiav txim siab tawg.
Cov ntsiab lus tseem ceeb: Yuav ua li cas Q295NH Resistant Corrosion
Q295NH qhov kev tiv thaiv corrosion yog nyob ntawm kev tiv thaiv ntuj tsim, txawv ntawm cov pa roj carbon zoo tib yam:
Nws cov tshuaj muaj pes tsawg leeg (Cu 0.20-0.50%, Cr 0.30-1.20%, P 0.07-0.15%) reacts nrog oxygen, noo noo, thiab cov pa phem hauv huab cua.
Over 6-12 months, this reaction forms a dense, adherent patina (a stable rust layer mainly composed of -FeOOH and -FeOOH).
Qhov no patina ua raws li kev thaiv, thaiv cov dej noo thiab cov kab mob corrosive los ntawm kev ncav cuag cov hlau substrate, qeeb corrosion mus rau ib feem ntawm cov hlau zoo tib yam.
Q295NH Kev Ua Haujlwm: Los ntawm Corrosive Ib puag ncig hom
Tsis yog txhua qhov corrosive ib puag ncig yog sib npaug-Q295NH qhov kev ua tau zoo, kev pab lub neej, thiab kev tiv thaiv yuav tsum tau sib txawv los ntawm corrosion hnyav:
1. Ib puag ncig me me Corrosive (C2-C3 Qib)
Tej chaw: Cov cheeb tsam suburban, cov cheeb tsam nyob deb nroog, thiab tsis yog- thaj chaw kev lag luam hauv nroog (cov av qis, muaj kuab paug tsawg, tsis muaj ntsev lossis kua qaub).
Kev ua tau zoo: Zoo heev. Lub patina cov ntaub ntawv sib npaug thiab ruaj khov, txo tus nqi corrosion tsawg dua lossis sib npaug li 0.03mm / xyoo.
Kev Pabcuam Lub Neej: 15-25 xyoo nrog kev saib xyuas tsawg (tsuas yog qee zaus cov plua plav tu).
Xav tau kev tiv thaiv: Tsis muaj -natural patina txaus.
2. Ib puag ncig Corrosive (C3-C4 Qib)
Tej chaw: Cov chaw muaj teeb pom kev zoo (tsawg acidic fumes, cov plua plav tsawg) thiab thaj chaw hauv av nyob ze ntawm txoj kev loj (kuaj ntsev los ntawm de-icing).
Kev ua tau zoo: Zoo, tab sis patina tsim yog qeeb me ntsis (8-12 lub hlis) thiab tej zaum yuav tsis sib xws.
Kev Pabcuam Lub Neej: 10-15 xyoo nrog kev tiv thaiv yooj yim.
Xav tau kev tiv thaiv: Ib qho nyias nyias, ua pa tawm los tiv thaiv- txheej txheej corrosion (xws li, fluoropolymer topcoat) los txhawb cov patina thiab tiv thaiv kab mob.
3. Hnyav Corrosive Ib puag ncig (C4+ Qib)
Tej chaw: Coastal areas (high salt spray), heavy industrial zones (acidic fumes from smelters/chemical plants), and regions with high humidity (>85%) thiab nquag los nag.
Kev ua tau zoo: pluag. Corrosive agents (ntsev, acids) dissolve lub patina, ua rau pitting thiab crevice corrosion.
Kev Pabcuam Lub Neej: Tsuas yog 3-5 xyoos, txawm tias muaj kev tiv thaiv.
Kev pom zoo: Zam Q295NH. Xaiv qhov siab dua -qib Corten Steel (Q355NH, S355K2W) lossis stainless hlau (316L) hloov.
Cov tswv yim tswv yim los txhim kho Q295NH's Corrosion Resistance
Rau nruab nrab corrosive ib puag ncig uas Q295NH siv, cov kauj ruam no txuas ntxiv nws lub neej kev pab:
Ua ntej-Kev Npaj Kev Txhim Kho: Txhaum-tuag saum npoo kom tshem tau cov roj, plua plav, thiab cov nplais xoob-qhov no ua kom cov patina tsis sib xws.
Txheej Xaiv: Siv ob- txheej txheej (zinc-nplua nuj epoxy primer + fluoropolymer topcoat) rau nruab nrab corrosion; zam cov uas tsis yog - breathable coatings uas ntxiab ya raws.
Tsis tu ncua: Tshawb xyuas qhov chaw txhua xyoo; kov cov coatings puas los yog patina tam sim ntawd kom tsis txhob muaj cov kab mob hauv zos los ntawm kev sib kis.
Hauv cov ntsiab lus, Q295NH Corten Steel ua tau kev ntseeg siab nyob rau hauv me me - rau - ib puag ncig corrosive nruab nrab, ua tsaug rau nws cov patina tiv thaiv. Txawm li cas los xij, nws tsis haum rau cov chaw hnyav xws li cov ntug dej hiav txwv lossis thaj chaw ua haujlwm hnyav. Los ntawm kev sib piv nws mus rau qib zoo corrosion thiab siv cov kev tiv thaiv yooj yim thaum xav tau, koj tuaj yeem ua kom nws lub neej kev pab thiab tus nqi ntau tshaj -kev ua tau zoo hauv cov kab mob corrosive.
