Q355NHB huab cua steel phajyog hom huab cua huab cua thiab tseem nyob rau qis- alloy steel series. Tsab ntawv Q yog thawj tsab ntawv "yield" hauv Suav; tus naj npawb 355 qhia qhov tsawg kawg nkaus lub zog ntawm 355 MPa; Cov ntawv HN qhia txog huab cua tiv thaiv; thiab tsab ntawv B qhia txog qib steel.
Q355NHB Corten steel ntawv muaj cov xeb zoo heev thiab atmospheric corrosion kuj. Thaum siv los ua cov khoom siv, Q355NHB weathering steel muab qhov zoo xws li corrosion kuj, ncua kev pab cuam lub neej, txo thickness thiab cov khoom siv, thiab lub zog efficiency.
Q355NHB Corten steel feem ntau yog siv rau hauv kev tsim cov khoom siv rau cov khoom siv tshuaj lom neeg thiab roj av, suav nrog cov thawv, tsheb ciav hlau, roj derricks, chaw nres nkoj hiav txwv, cov chaw tsim roj, thiab cov thawv ntim rau hydrogen sulfide (H₂S) corrosive ib puag ncig.
Q355NHB Weathering Steel - Tshuaj muaj pes tsawg leeg
| Element | Cov ntaub ntawv |
|---|---|
| C (%) | Max 0.16 |
| Si (%) | Max 0.50 |
| Mn (%) | 0.90–1.50 |
| P (%) | 0.035 |
| S (%) | 0.035 |
| Cr (%) | 0.40–0.80 |
| V (%) | 0.02–0.10 |
| Cu (%) | 0.20–0.50 |
Q355NHB Corten Steel - Mechanical Properties
| Khoom | Cov ntaub ntawv |
|---|---|
| Tawm tswv yim Rp0.2 (MPa) | Ntau dua lossis sib npaug rau 745 |
| Tensile Rm (MPa) | Ntau dua lossis sib npaug rau 333 |
| Impact KV/Ku (J) | 11 |
| Elongation A (%) | 23 |
| Kev txo qis hauv -section Z (%) | 24 |
| Kev kho cua sov | Kev daws thiab Kev laus, Annealing, Ausaging, Q + T, thiab lwm yam. |
| Brinell Hardness (HBW) | 242 |
1. Q355NHB steel yog dab tsi?
Q355NHB yog Suav cov txheej txheem huab cua steel qib nyob rau hauv GB / T 4171. "Q" sawv cev rau lub zog tawm los, "355" txhais tau tias qhov tsawg kawg nkaus lub zog ntawm 355 MPa, "NH" qhia txog huab cua ( atmospheric corrosion-resistant) steel, thiab "B" yog qib zoo. It is designed to form a dense and stable rust layer on its surface when exposed to the atmosphere, which protects the steel from further corrosion and significantly extends its service life.
2. Qhov txawv ntawm Q355NHB thiab cov pa roj carbon zoo li cas?
Tsis zoo li cov pa roj carbon zoo tib yam, Q355NHB muaj cov ntsiab lus alloying xws li tooj liab, chromium, npib tsib xee, thiab phosphorus, uas tso cai rau nws tsim cov txheej txheem oxide tiv thaiv tom qab raug los nag thiab huab cua. Lub ntuj patina no tiv thaiv cov dej noo thiab oxygen los ntawm kev nkag mus rau hauv cov hlau, thaum carbon steel tseem xeb mus txog thaum nws deteriorates. Yog li ntawd, Q355NHB muaj kev tiv thaiv corrosion zoo dua thiab yuav tsum muaj kev saib xyuas tsawg dua lub sijhawm.
3. Dab tsi yog cov ntawv thov tseem ceeb ntawm Q355NHB steel?
Q355NHB yog dav siv nyob rau hauv cov choj, tsheb ciav hlau, tsheb thauj mus los, cov tsev nyob sab nraum zoov, lub zog xa hluav taws xob, thiab cov vaj tsev façades qhov twg ntev -lub sij hawm atmospheric raug. Nws kuj yog nrov nyob rau hauv niaj hnub architectural thiab toj roob hauv pes tsim vim hais tias nws tej yam ntuj tso xeb xim muab ib tug txaus nyiam kev lag luam thiab zoo nkauj tsos yam tsis tas yuav painting.
4. Puas yog Q355NHB sib npaug rau ASTM A588 weathering steel?
Q355NHB feem ntau suav hais tias suav qhov sib npaug ntawm ASTM A588 vim tias ob qho tib si yog cov huab cua nrog cov corrosion zoo sib xws - cov txheej txheem tiv thaiv thiab cov cuab yeej muaj zog. Txawm li cas los xij, lawv ua raws li cov qauv sib txawv hauv lub tebchaws thiab muaj cov tshuaj lom neeg sib txawv me ntsis. Hauv kev tsim kho vaj tsev, Q355NHB feem ntau tuaj yeem siv los hloov A588 hauv ntau daim ntawv thov kev tsim thiab vaj tsev tom qab kev pom zoo.
5. Puas yog Q355NHB xav tau kev pleev xim lossis txheej?
Hauv kev siv sab nraum zoov feem ntau, Q355NHB tsis tas yuav tsum tau pleev xim rau vim tias nws ib txwm tsim cov txheej xeb ruaj khov uas tiv thaiv cov hlau. Qhov no tshem tawm qhov kev xav tau rau lub sijhawm repainting, txo cov nqi tu. Txawm li cas los xij, nyob rau hauv ib puag ncig uas muaj cov ntsiab lus chloride siab, xws li cov chaw hauv hiav txwv lossis ntug hiav txwv, cov txheej txheem tiv thaiv ntxiv yuav raug pom zoo kom ua kom ntev ntev -.
6. Dab tsi yog cov khoom siv kho tshuab ntawm Q355NHB?
Q355NHB muaj qhov tsawg kawg nkaus lub zog ntawm 355 MPa thiab lub zog tensile feem ntau ntawm 470 thiab 630 MPa, nyob ntawm lub phaj thickness. Nws kuj muaj qhov zoo elongation thiab cuam tshuam toughness, tso cai rau nws tiv taus dynamic loads, vibration, thiab kub variations. Cov khoom no ua rau nws haum rau ob qho tib si cov qauv thiab thauj khoom- cov ntawv thov kev coj tus kheej.
7. Puas yog Q355NHB yooj yim rau vuam thiab txheej txheem?
Yog lawm, Q355NHB muaj qhov zoo weldability, txiav kev ua tau zoo, thiab tsim muaj peev xwm, zoo ib yam li cov pa qis - alloy structural steels. Cov txheej txheem vuam txheej txheem xws li MIG, TIG, thiab submerged arc vuam siv tau, txawm tias qis dua - hydrogen electrodes raug pom zoo kom tsis txhob tawg. Preheating tej zaum yuav xav tau rau cov phaj tuab kom ntseeg tau qhov zoo ntawm vuam.
8. Q355NHB txuag cov nqi kho li cas?
Vim Q355NHB tsim ib tus kheej - tiv thaiv xeb txheej, nws tsis tas yuav repainting tsis tu ncua los yog tiv thaiv - kev kho corrosion zoo li carbon hlau. Nyob rau hauv lub neej ntawm ib tug qauv, qhov no yuav txo tau tus nqi txij nkawm los ntawm ntau tshaj 50%, tshwj xeeb tshaj yog rau cov txuas hniav, sab nraum zoov steel thav duab, thiab loj exposed lug, ua rau nws yog ib tug heev tus nqi - zoo heev tov.
