Q355NH Atmospheric Corrosion Resistant Steel Qauv
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Gnee Steel (Tianjin) Co., Ltd. yog ib qho ntawm cov kws tshaj lij q355nh atmospheric corrosion resistant structural steel manufacturers thiab lwm tus neeg nyob hauv Suav teb. Txais tos rau kev lag luam wholesale customized q355nh atmospheric corrosion resistant structural steel ntawm tus nqi sib tw los ntawm peb lub hoobkas. Cov kev pabcuam zoo thiab cov khoom zoo yog muaj.
Khoom Description
Q355NH Atmospheric Corrosion Resistant Steel Qauvyog tus hwm qis- alloy steel tsim kom tau raws li cov kev xav tau nruj ntawm GB/T 4171-2008, sib txuas lub zog siab, ductility, thiab muaj zog tiv thaiv atmospheric corrosion. Cov khoom no yog qhov tsim nyog rau lub sijhawm ntev - raug rau hauv nroog, nyob deb nroog, thiab me me kev lag luam ib puag ncig, qhov uas nws txo qis kev cia siab rau cov txheej txheem tiv thaiv los ntawm nws cov khoom tsis muaj xeb-inhibiting.
Tshuaj muaj pes tsawg leeg (GB/T 4171-2008, Mass Fraction, %)
| Element | C | Si | Mn | P | S | Cu | Cr | Ni |
|---|---|---|---|---|---|---|---|---|
| Ntau yam | Tsawg dua lossis sib npaug li 0.16 | Tsawg dua los yog sib npaug li 0.50 | 0.50-1.50 | Tsawg dua lossis sib npaug li 0.030 | Tsawg dua lossis sib npaug li 0.030 | 0.25-0.55 | 0.30-1.25 |
Tsawg dua lossis sib npaug li 0.65 |
Mechanical Properties (Thickness Tsawg dua lossis sib npaug ntawm 16mm, GB / T 4171-2008)
| Khoom | Tus nqi |
|---|---|
| Yield zog (ReL) | Ntau dua lossis sib npaug li 355 MPa |
| Tensile zog (Rm) | 490-630 MPa |
| Elongation (A) | Ntau dua lossis sib npaug li 20% |
| Charpy Impact Zog (20 degree, V-Notch) | Ntau dua lossis sib npaug li 47 J |
Corrosion Resistance Mechanism
Nyob rau hauv ib puag ncig nrog cov av qis (RH 50-80%) thiab tsis tshua muaj ntsev / kua qaub, Q355NH nkag muselectrochemical passivation, tsim ib txheej xeb ruaj khov uas nws tus kheej - kho raws sijhawm. Tsis zoo li cov hlau zoo tib yam, uas raug kev txom nyem los ntawm kev nce qib pitting, Q355NH ua qauv qhiaruaj khov corrosion kinetics, nrog txhua xyoo thickness poob feem ntau Tsawg dua los yog sib npaug rau 0.02 hli hauv nroog chaw. Txawm li cas los xij, nws tsis pom zoo rau siab - ntsev (nqaij ntug dej hiav txwv) lossis acidic (pH)<4) environments, where supplementary coatings may be required.
Fabrication & Weldability
Q355NH txhawb nqa cov txheej txheem txias / kub txheej txheem, suav nrog khoov, xuas nrig ntaus, thiab shearing, nrog kev ua tau zoo piv rau qis - carbon structural steels. Rau vuam,qis-hydrogen electrodes(piv txwv li, E5015-NH lossis E5515-NH) raug pom zoo kom muaj kev sib txhuam corrosion ntawm lub hauv paus hlau thiab welds. Kev ntxuav tom qab vuam kom tshem tawm cov slag thiab cov khib nyiab yog qhov tseem ceeb los tiv thaiv qhov chaw galvanic corrosion ntawm cov pob qij txha.
Cov ntawv thov tseem ceeb
- Architectural Structures: Zoo tagnrho rau lub tsev facades, sculptures sab nraum zoov, thiab toj roob hauv pes pergolas qhov twg huab cua zoo nkauj xav tau.
- Industrial Infrastructure: Siv nyob rau hauv cov kav hlau txais xov, cov tso tsheb hlau luam, thiab cov tsev tsim khoom uas raug rau cov ntsiab lus atmospheric.
- Kev thauj mus los: Siv nyob rau hauv railway carriage lub cev, thawv thav duab, thiab tsheb chassis, qhov twg qhov hnyav txo thiab corrosion kuj yog qhov tseem ceeb.
- Lub zog tauj dua tshiab: Haum rau cov cua turbine txhawb cov qauv thiab lub hnub ci vaj huam sib luag mounts nyob rau hauv tsis yog - cheeb tsam ntug dej hiav txwv.
Qhov zoo rau kev tsim kho kom ruaj khov
- Tsawg Lifecycle Nqi: Tshem tawm ntau zaus repainting, txiav cov nqi kho mob txog li 50% piv rau cov pa hlau.
- Environmental Friendliness: Txo kev cia siab rau cov txheej txheem hluavtaws, ua raws li LEED thiab lwm cov ntawv pov thawj lub tsev ntsuab.
- Kev rov ua dua tshiab: 100% recyclable thaum kawg - ntawm - lub neej, txo qhov cuam tshuam ib puag ncig.
Txheem & Ua raws cai
GB/T 4171-2008: Ua kom muaj tshuaj lom neeg thiab cov khoom sib xws rau atmospheric corrosion kuj.
ASTM A588 Qib A sib npaug: Qhia txog kev ua tau zoo sib xws rau cov qauv thoob ntiaj teb, ua kom yooj yim rau kev ua haujlwm thoob ntiaj teb.
Los ntawm kev sib koom ua ke cov qauv tsim alloy siab heev thiab kev tswj xyuas kom zoo, Q355NH Atmospheric Corrosion Resistant Structural Steel teeb tsa lub cim rau kev ua haujlwm ntev, kev ua haujlwm zoo, thiab kev ruaj khov hauv cov txheej txheem niaj hnub no.
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