1. Nyob deb nroog/ntxuav huab cua ib puag ncig
Kev ua tau zoo: Zoo heev
Forms ibntom ntom, ruaj khov -xim av patinasai heev vim nws cov ntsiab lus phosphorus siab.
Corrosion tus nqi yog tsawg heev; yuav luag tsis muaj corrosion ntxiv tom qab patina maturation.
Yuav luag tsis muaj xeb ntws; nto tseem zoo ib yam thiab huv si - saib.
Yuav siv tauunpainted rau xyoo lawmtsis muaj kev poob haujlwm.
2. Nroog / Industrial Atmosphere (SO₂, plua plav, kua qaub los nag)
Kev ua tau zoo: Zoo heev (zoo dua li cov huab cua feem ntau)
High phosphorus + Cr-Cu alloying muab kev tiv thaiv zoo rau kev ua qias tuaj thiab acid deposition.
Patina tsim sai thiab nruj, zoo thaiv cov kua qaub thiab corrosive hais.
Tsis tshua muaj blistering, tsis sib xws xeb, los yog nruam corrosion tshaj Q355NH, Corten A, los yog cov huab cua zoo tib yam hlau.
Haum rau cov qauv hlau, txuas hniav, thiab cov khoom siv sab nraum zoov hauv thaj chaw muaj kev lag luam.
3. Ntug hiav txwv / ntsev-Spray ib puag ncig
Kev ua tau zoo: Nruab nrab (siv tau tsuas yog nyob rau hauv ib cheeb tsam me me ntug dej hiav txwv)
Resistant lub teeb ntsev pos huab zoo dua li carbon steel, tab sistsis tsim los rau thaj tsam loj marine txaws.
Cov ntsev ntsev ntau tuaj yeem zom cov patina, ua rau lub zos pitting thiab nce corrosion.
Tsis pom zoo nyob rau hauv1-2 km ntawm ntug dej hiav txwvlos yog hauv ntsev hnyav - cua.
Hauv thaj chaw me me ntawm ntug dej hiav txwv, nws tseem tuaj yeem siv tsis tau pleev xim tab sis yuav tsum tau ua kom dej zoo thiab tu tsis tu ncua.
4. High-Humidity / Rainy / Poorly Ventilated Ib puag ncig
Kev ua tau zoo: Ncaj ncees rau cov neeg pluag
Ntev -lub sij hawm dampness tiv thaiv kev ruaj khov patina tsim.
Nto zoo li tsimmos dub xeb, streaks, thiab persistent runoff.
Crevices, npog thaj chaw, thiab cov dej ntws tsis zoo yuav corrode tsis tu ncua.
Yuav tsum yogcoated los yog kawyog siv nyob rau hauv qhov chaw ntxoov ntxoo, av noo, los yog nyob ze.
5. Av-Buried / Dej-Immersed Ib puag ncig
Kev ua tau zoo: pluag heev
Kev tiv thaiv patinatsim tsis tau tag nrhotsis muaj oxygen pauv.
Corrodes sai, zoo ib yam li cov pa roj carbon zoo tib yam.
Yuav tsum yogtag nrho coated nrog anti-corrosion systemsyog faus, submerged, los yog nyob rau hauv kev sib cuag nrog av, pob zeb, los yog mulch.
6. Qhov kub thiab txias / huab cua txias ib puag ncig
Kev ua tau zoo: Zoo
S355J0WP muajzoo cuam tshuam toughness ntawm 0 degree(J0 zoo).
Cov kub txias tsis txo nws cov atmospheric corrosion kuj.
Patina tsim qeeb hauv lub caij ntuj no tab sis rov pib dua ib txwm nyob rau lub hlis sov, ntub dej.
Tsim nyog rau cov qauv hlau nyob rau hauv temperate thiab txias cheeb tsam.
7. Kev kub ceev / Thermal Cycling Ib puag ncig
Kev ua tau zoo: Txwv
Tsis yog cua sov-resistant steel; kev pabcuam kub tsis tu ncua yuav tsum tsis pub tshaj300 degree.
Tshaj qhov ntsuas kub no, cov nplai oxide tsim sai heev thiab kev tiv thaiv patina ua tsis tiav.
Tsis haum rau boilers, flues, los yog ntev -lub sij hawm siab - kub qhov chaw.
8. Mechanical Stress / Fatigue Ib puag ncig
Kev ua tau zoo: Zoo
Raws li qhov siab -lub zog huab cua steel (S355 qib), nws muaj kev ruaj ntseg zoo heev.
Patina tsis ua rau qaug zog tiv thaiv nyob rau hauv ib txwm atmospheric tej yam kev mob.
Welded pob qij txha muaj kev ua tau zoo nyob rau hauv dynamic loads (bridges, tsheb, machinery).
