Q355NHB Corten Steelyog ib qho zoo tshaj plaws weathering steel uas ua ke nrog cov txheej txheem muaj zog, durability, thiab zoo nkauj txaus siab. Paub txog nws qhov tshwj xeeb tsis kam tiv thaiv atmospheric corrosion, qhov qis - alloy steel yog dav siv hauv kev tsim kho, kev tsim kho vaj tse, tsheb thauj mus los, thiab kev lag luam.
Nws qhov tshwj xeeb reddish - xim av tsos, tsim los ntawm ntuj oxidation, ua rau nws ob qho tib si ua haujlwm thiab pom kev zoo nkauj.
Cov txheej txheem ntau lawm ua kom muaj kev ua haujlwm siab
Qhov zoo ntawm Q355NHB Corten Steel yog txiav txim siab los ntawm kev ua tib zoo tswj cov txheej txheem tsim khoom, uas sib txuas cov qauv tsim, steelmaking, kub dov, kev kho deg, thiab ntuj oxidation.
Txhua theem ua kom ntseeg tau tias cov hlau xa cov khoom zoo tshaj plaws, kev ua haujlwm ntev -, thiab pom kev zoo ib yam.
1. Alloy Composition Design
Lub hauv paus ntawm weathering steel yog nyob rau hauv nws optimized alloy piv. Q355NHB muaj cov kab mob xws li tooj liab, chromium, npib tsib xee, thiab phosphorus, uas tsim cov txheej txheem oxide ruaj khov rau ntawm qhov chaw.
Tooj thiab npib tsib xee txhim kho tus kheej -rusting stability.
Chromium densifies tiv thaiv oxide zaj duab xis.
Phosphorus txhim kho adhesion ntawm thawj txheej xeb.
Piv nrog rau cov pa roj carbon zoo tib yam, cov ntsiab lus no muab Q355NHB tshwj xeeb atmospheric corrosion kuj, txo cov txij nkawm thiab ua haujlwm ntev.
2. Steelmaking thiab Casting
Thaum lub alloy muaj pes tsawg leeg yog optimized, lub molten hlau yog smelted nyob rau hauv converters los yog hluav taws xob rauv kom tshem tawm impurities. Nws yog tom qab ntawd nruam nrum rau hauv cov ntawv sau, kom ntseeg tau tias cov khoom faib tawm thiab kev huv. Cov theem no yog qhov tseem ceeb rau kev ua tiav cov khoom zoo ib yam thiab corrosion kuj ntawm cov khoom kawg.
3. Kub Rolling thiab tsim
Cov steel billets yog rhuab thiab dhau los ntawm ntau lub dov mills rau daim hlau los yog profiles ntawm qhov yuav tsum tau thickness. Kub dov tsis tsuas yog refines lub grain qauv tab sis kuj xyuas kom meej:
High tensile thiab yield zog
Dimensional raug
Plav thiab du nto
Cov theem no tau lees paub tias Q355NHB ua tau raws li cov qauv tsim thiab kev tsim khoom.
4. Kev kho deg thiab kev npaj Oxidation
Ua ntej xa khoom, cov hlau nto feem ntau yog sab laug hauv nws lub xeev dov. Txawm li cas los xij, rau qee yam kev siv, kev kho deg xws li sandblasting, pickling, lossis dej pos catalysis tuaj yeem siv. Qhov no ua kom cov txheej txheem xeb tsis sib xws, kom ntseeg tau tias cov hlau tsim ib qho zoo nkauj thiab zoo nkauj zoo nkauj reddish -xim av patina tom qab kev teeb tsa.
5. Ntuj tsim txheej tiv thaiv xeb
Ib zaug ntsia, Q355NHB raug cua, los nag, thiab qhuav - cov voj voog ntub dej, uas ib txwm tsim cov txheej xeb ntawm qhov chaw. Nyob rau tib lub sijhawm, txheej txheej no hloov mus rau hauv cov txheej txheej tuab thiab ruaj khov, uas:
Zoo inhibits ntxiv corrosion
Extens lub neej ntawm cov qauv
Tsim ib tug tshwj xeeb architectural kev ntxhib los mos
Cov txheej xeb tsis yog tsuas yog tiv thaiv cov hlau xwb tab sis kuj tseem muab qhov ntev - pom kev pom kev ntev, ua rau Q355NHB zoo tagnrho rau ob qho tib si kev ua haujlwm thiab kev siv zoo nkauj.
Qhov zoo ntawm Q355NHB Corten Steel
Siab atmospheric corrosion kuj: kev tu me me thiab ua haujlwm ntev.
Cov khoom siv zoo heev: Cov txiaj ntsig siab thiab tensile lub zog, ductility, thiab qaug zog ua haujlwm.
Zog-nqi thiab tus nqi- zoo: Txo qhov xav tau kev pleev xim, txheej, thiab hloov khoom siv.
Architectural aesthetics: Elegant reddish-xim av patina txhim kho qhov pom kev pom ntawm cov qauv.
Versatility nyob rau hauv daim ntaub ntawv: Haum rau txuas hniav, yees, tsheb, thawv, marine lug, thiab cov khoom siv.
Q355NHB Corten Steel yog lub siab -kev ua haujlwm huab cua uas ua ke nrog lub zog, kev tiv thaiv corrosion, thiab kev zoo nkauj zoo nkauj. Nws cov txheej txheem ntau lawm ua kom zoo ib yam thiab ua haujlwm ntev, thaum nws cov txheej txheem xeb tiv thaiv cov qauv hauv qhov hnyav sab nraum zoov.
Txawm hais tias siv rau hauv kev tsim kho vaj tse, cov cuab yeej siv hauv tsev, lossis cov haujlwm tsim vaj tsev, Q355NHB muab tus nqi - siv tau zoo thiab pom kev daws teeb meem rau lub sijhawm ntev - kev siv cov qauv siv.
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.
