A588 Qib B isa hom High-Strength Low-Alloy (HSLA) weathering steel, paub txog nws cov atmospheric corrosion kuj thiab siab zog, feem ntau siv nyob rau hauv cov choj, tsev, thiab cov khoom hnyav, feem ntau hu ua Corten steel, muaj cov ntsiab lus xws li Chromium, Nickel, thiab tooj liab uas tso cai rau nws los tsim kev tiv thaiv xeb - zoo li patina.
Cov yam ntxwv tseem ceeb
Hom: HSLA weathering structural steel.
Corrosion Resistance: Zoo heev, txhim kho xeb ruaj khov -zoo li txheej (patina).
Lub zog: Lub zog siab, qhov qis tshaj tawm ntawm 50 ksi (345 MPa) rau daim hlau.
Chemical Composition: Muaj cov khoom xws li Manganese, Chromium, Nickel, Silicon, thiab tooj liab.
Weldability: Zoo, siv cov txheej txheem vuam txheej txheem thiab cov khoom siv hlau tsim nyog (xws li AWS A5.5 E7018).
Daim ntaub ntawv: Cov choj, kev tsim kho dav dav, cov cuab yeej siv mining, cranes, thiab lwm yam khoom siv raug rau qhov chaw hnyav.
Dab tsi yog cov ntawv thov tseem ceeb ntawm A588 Qib B?
Cov ntawv thov tseem ceeb ntawm ASTM A588 Qib B yog zoo ib yam nyob rau hauv lub hom phiaj rau Qib A, tsom mus rau cov txheej txheem nthuav tawm qhov twg nws cov huab cua tiv thaiv corrosion (cov huab cua huab cua) muab kev ruaj khov, tsis tshua muaj -kev tu, thiab tshuaj zoo nkauj. Nws yog siv qhov twg cov tshuaj muaj pes tsawg leeg ntawm Qib B ua tau raws li zeb ntau lawm lossis qhov project specifications.
Cov ntawv thov tseem ceeb:
Txuas hniav & Txoj Kev Loj: Daim ntawv thov feem ntau. Siv rau girders, arches, trusses, thiab kev txhawb nqa cov qauv uas tiv thaiv xeb patina tshem tawm qhov xav tau kev pleev xim, txo qis ntev - lub sijhawm tu.
Architectural & Exposed Building Frames: Rau lub tsev façades, nthuav kab, ru tsev txhawb nqa, thiab monumental lug qhov twg qhov txawv, tus kheej - tiv thaiv xeb tiav yog xav tau raws li ib tug architectural feature.
Infrastructure & Utilities: Transmission towers, light poles, sound barrier walls, and crane runways uas tau txais txiaj ntsig los ntawm nws qhov kev ua haujlwm "kev tu- dawb".
Sab nraum zoov Sculptures & Landmark Structures: Xaiv rau nws lub ntuj tsim, hloov kho kom zoo nkauj thiab ua haujlwm ntev yam tsis muaj txheej txheej.
Vim li cas A588 Qib B raug xaiv:
Tus Nqi Lub Neej Tsawg: Tus nqi pib siab dua li cov qauv hlau, tab sis zam kev rov ua dua tus nqi pleev xim dua li 50+ xyoo kev pab cuam lub neej nyob rau hauv qhov chaw tsim nyog.
Aesthetic Value: Qhov ruaj khov, lub ntiaj teb patina yog ib qho kev xav tsim tiav.
Lub zog siab: 50 ksi yam tsawg kawg nkaus lub zog tso cai rau kev siv tau zoo, sib zog tsim.
Sustainability: Tsis muaj xim los yog coatings txhais tau tias tsis muaj VOCs lossis yav tom ntej pov tseg pov tseg.
Qhov txawv ntawm A588 Qib A:
Qib A thiab Qib B muaj cov khoom siv tshuab zoo ib yam (50 ksi tawm los) thiab ua haujlwm zoo ib yam. Qhov txawv tsuas yog nyob rau hauv lawv cov tshuaj muaj pes tsawg leeg txwv. Qib B muaj cov mills sib txawv me ntsis kev tso cai rau cov ntsiab lus xws li phosphorus thiab silicon kom haum raws li cov khoom sib txawv los yog cov kev coj ua melting, thaum tseem ua tiav cov huab cua uas yuav tsum tau ua. Rau qhov kawg -tus neeg siv, lawv muaj peev xwm hloov pauv tau, nrog rau kev xaiv feem ntau yog tsim los ntawm cov neeg tsim khoom raws li chemistry.
Kev txwv tseem ceeb (Tib yam li Qib A):
Nws ua tau zoo tshaj plaws nyob rau hauv av los yog nruab nrab cua nrog ntub / qhuav voj voog. Nws siv nyob rau hauv tas li noo noo, siab -chloride ntug dej hiav txwv splash cheeb tsam, los yog loj muaj kuab paug tsis pom zoo tsis muaj kev tiv thaiv.
Hauv cov ntsiab lus, A588 Qib B yog siv rau tib lub npe kos npe, nthuav tawm cov haujlwm steel raws li Qib A- feem ntau txuas hniav thiab cov qauv vaj tsev - qhov twg engineers thiab architects leverage nws lub ntuj huab cua muaj peev xwm ua ob qho tib si tiv thaiv thiab ua tiav qhov kawg.
1. Dab tsi yog A588 Qib B steel siv rau?
A588 Qib B feem ntau yog siv rau kev nthuav tawm cov qauv siv xws li txuas hniav, cov tsev, thiab cov khoom vaj tsev nyob qhov twg nws cov khoom huab cua muab kev tiv thaiv xeb patina, tshem tawm qhov xav tau kev pleev xim.
2. Lub zog tawm ntawm A588 Qib B yog dab tsi?
Qhov tsawg kawg nkaus yield zog ntawm A588 Qib B yog 50 ksi (345 MPa) rau cov khoom thicknesses txog li 4 ntiv tes (100 hli).
3. A588 Qib B txawv li qib A li cas?
Lub ntsiab sib txawv yog nyob rau hauv tshuaj muaj pes tsawg leeg; Qib B muaj qhov sib txawv me ntsis ntawm cov hlau txwv (xws li, siab dua phosphorus thiab silicon) kom ua tiav cov huab cua zoo sib xws tab sis tso cai rau kev hloov pauv ntau dua hauv kev tsim khoom.
4. Puas yog A588 Qib B weldable?
Yog lawm, nws yog weldable siv cov txheej txheem txheem, tab sis nws yuav tsum tau qis -hydrogen kev coj ua thiab kev siv huab cua- hom muab tub lim hlau (xws li E70xx-W series) kom phim cov corrosion kuj ntawm lub hauv paus hlau.
5. Dab tsi yog qhov corrosion kuj ntawm A588 Qib B?
Nws muaj atmospheric corrosion kuj kwv yees li 4-6 lub sij hawm zoo dua li cov pa roj carbon steel, ua kom ruaj khov, tiv thaiv patina thaum raug huab cua mus ncig.
6. A588 Qib B puas tuaj yeem siv rau thaj chaw ntug dej hiav txwv?
Nws tuaj yeem siv tau, tab sis kev ua haujlwm yuav raug txo qis hauv qhov chaw ntug dej hiav txwv loj (ntsev-} nplua nuj) ib puag ncig. Qib B tsis yog qhov ua kom zoo rau cov tshuaj chloride siab, thiab cov txheej txheem tiv thaiv lossis lwm qib feem ntau pom zoo.
7. Cov European sib npaug ntawm A588 Qib B yog dab tsi?
Qhov ze tshaj plaws nyob sab Europe huab cua sib npaug yog S355J0WP lossis S355J2WP raws li EN 10025-5, uas muab lub zog zoo sib xws thiab atmospheric corrosion kuj.
8. Puas yog A588 Qib B xav tau kev pleev xim?
Tsis yog, nws yog tsim los siv liab qab (tsis pleev xim) los ua ib qho kev tiv thaiv patina. Painting yog xaiv tau thiab feem ntau tsuas yog siv rau kev zoo nkauj.
9. Cov tshuaj muaj pes tsawg leeg ntawm A588 Qib B yog dab tsi?
Nws muaj cov ntsiab lus alloying xws li tooj liab, chromium, nickel, thiab phosphorus rau huab cua tsis kam. Cov kev txwv tseem ceeb suav nrog carbon max 0.20%, phosphorus max 0.04%, thiab tooj liab 0.20-0.40%.
10. A588 Qib B piv rau A572 Qib 50 li cas?
Ob leeg muaj 50 ksi yield zog, tab sis A588 Qib B yog cov huab cua huab cua nrog corrosion-cov khoom tiv taus, thaum A572 Qib 50 yog tus qauv siab -lub zog qis- alloy (HSLA) hlau uas yuav tsum tau pleev xim rau kev tiv thaiv corrosion.
Tag nrho cov specification thiab cov ntsiab lus muaj nyob rau ntawm kev thov. Cov ntaub ntawv saum toj no yog muab rau kev taw qhia nkaus xwb. Rau kev tsim tshwj xeeb thov hu rau peb cov neeg ua haujlwm muag khoom.
