A709 Qib 50W Weathering Steel yog dab tsi?
A709 Qib 50W Weathering Steelyog lub zog muaj zog, qis-alloy structural steel tsim feem ntau rau kev tsim kho choj. Nws ua ke qhov tsawg kawg nkaus lub zog ntawm 50 ksi (345 MPa) nrog kev txhim kho atmospheric corrosion kuj.
Tsis zoo li cov pa roj carbon steel, Qib 50W muaj cov ntsiab lus alloying xws li tooj liab, chromium, npib tsib xee, thiab vanadium, uas ua rau muaj kev tiv thaiv ntau dua oxide txheej nyob rau hauv ib puag ncig zoo.
Cov khoom siv yog them los ntawm ASTM A709 / A709M, cov lus qhia tshwj xeeb rau cov qauv hlau siv hauv choj. Nws lub zog tensile yam tsawg kawg nkaus yog 70 ksi (485 MPa), thaum nws qhov elongation yam tsawg kawg nkaus yog 21% tshaj 2-nti (50 mm) ntsuas qhov ntev thiab 18% tshaj 8-nti (200 mm) ntsuas qhov ntev raws li cov ntaub ntawv luam tawm Qib 50W khoom.
Cov khoom no ua rau nws haum rau cov khoom siv uas xav tau kev sib xyaw ua ke ntawm lub zog, ductility, thiab huab cua ua haujlwm.
Tshuaj muaj pes tsawg leeg ntawm A709 Qib 50W Steel
Cov tshuaj muaj pes tsawg leeg ntawm A709 Qib 50W yog qhov tseem ceeb cuam tshuam rau nws cov khoom siv kho tshuab, weldability, thiab atmospheric corrosion kuj.
Copper feem ntau yog li ntawm 0.20% mus rau 0.40%, nyob ntawm seb cov khoom siv, thaum chromium muaj li ntawm 0.40% mus rau 0.70%. Nickel tuaj yeem ncav cuag qhov siab tshaj plaws ntawm 0.40% rau Hom A thiab 0.50% rau Hom B.
Cov ntsiab lus alloying ua haujlwm ua ke nrog cov hlau matrix los cuam tshuam cov yam ntxwv ntawm cov khoom siv corrosion tsim rau saum npoo.
Chemical Composition Table
| Element | Hom A (wt.%) | Hom B (wt.%) |
|---|---|---|
| Carbon (C), max. | 0.19 | 0.20 |
| Manganese (Mn) | 0.80–1.25 | 0.75–1.35 |
| Phosphorus (P), max. | 0.030 | 0.030 |
| Sulfur (S), max. | 0.030 | 0.030 |
| Silicon (Si) | 0.30–0.65 | 0.15–0.50 |
| Nickel (Ni), max. | 0.40 | 0.50 |
| Chromium (Cr) | 0.40–0.65 | 0.40–0.70 |
| Copper (Cu) | 0.25–0.40 | 0.20–0.40 |
| Vanadium (V) | 0.02–0.10 | 0.01–0.10 |
Mechanical Properties ntawm ASTM A709 Qib 50W
Cov khoom siv kho tshuab ntawm ASTM A709 Qib 50W yog tsim los ua kom tau raws li cov qauv kev cai ntawm choj hlau. Nws qhov tsawg kawg nkaus tawm lub zog yog 345 MPa, uas txhais tau hais tias cov hlau yuav tsum tiv taus theem ntawm kev ntxhov siab ua ntej cov yas deformation mus tas li pib nyob rau hauv cov xwm txheej ntsuas.
Nws lub zog tensile yam tsawg kawg nkaus yog 485 MPa, sawv cev rau qhov tsawg kawg nkaus kev ntxhov siab mus txog thaum lub sij hawm ntsuas tensile. Qhov sib txawv ntawm ob qhov tseem ceeb no muab cov ntaub ntawv siv tau zoo rau kev nkag siab cov khoom siv lub zog.
Mechanical Properties Table
| Khoom | Kev xav tau |
|---|---|
| Yield zog | Ntau dua lossis sib npaug rau 345 MPa (50 ksi) |
| Tensile zog | Ntau dua lossis sib npaug rau 485 MPa (70 ksi) |
| Elongation, 50 hli ntsuas qhov ntev | Ntau dua lossis sib npaug li 21% |
| Elongation, 200 hli ntsuas qhov ntev | Ntau dua lossis sib npaug li 18% |
| Khoom Txheem | ASTM A709 / A709M / ASTM A709 / ASTM A709 / ASTM A709 / ASTM A709 / ASTM A709 / ASTM A709 / ASTM A709 / ASTM A709 / A709M / ASTM A709 / ASTM A709 / ASTM A709 / A709M / ASTM A709 / A709M / ASTM A709 / ASTM A709 / ASTM A709 / A709M / ASTM A709 / A709M / ASTM A709 / A709M / ASTM A709 / A709M / ASTM A709 / A709M / ASTM A709 / ASTM A709 / A709M / ASTM A709 / A709M / ASTM A709 / A709M) thiab ASTM A709 / A709M |
ASTM A709 Qib 50W Phaj Dimensions thiab Nyhav suav
A709 Qib 50W steel daim hlau muaj nyob rau hauv cov thicknesses sib txawv, dav, thiab ntev nyob ntawm lub zeb lub peev xwm ntau lawm.
Reference Dimensions thiab Theoretical Luj
| Phaj Thickness | Raws li qhov hnyav ib m² |
|---|---|
| 10 mm | 78.5 kg |
| 12 mm | 94.2 kg |
| 16 mm | 125.6 kg |
| 20 mm | 157.0 kg |
| 25 mm | 196.25 kg |
| 30 mm | 235.5 kg |
| 40 mm | 314.0 kg |
| 50 mm | 392.5 kg |
Cov ntawv thov ntawm A709 Qib 50W Weathering Steel
A709 Qib 50W feem ntau yog siv hauv kev tsim kho choj thiab lwm yam kev siv cov qauv uas nws lub zog thiab atmospheric corrosion kuj yog haum rau cov qauv tsim.
Cov yam ntxwv ntawm tus choj muaj xws li phaj girders, girder webs, flanges, cross thav duab, diaphragms, thiab lwm yam fabricated structural tswv cuab.
Piv txwv li, tus choj girder yuav siv 20 hli los yog 30 hli daim hlau rau cov khoom sib txawv nyob ntawm seb lub sij hawm dabtsi yog khoov, shear quab yuam, kev ruaj ntseg, thiab tsim kev qaug zog.
Cov khoom siv kuj tseem raug txiav txim siab rau kev kho dua tshiab, cov tswv cuab hloov pauv, thiab qee qhov kev ua haujlwm sab nraum zoov. Txawm li cas los xij, qib yuav tsum tsis txhob raug xaiv nkaus xwb vim tias qhov project nyob sab nraum zoov.
Cov kws kho tsheb yuav tsum xyuas cov huab cua hauv cheeb tsam, muaj cov tshuaj chloride, kev npaj cov kua dej, kev nthuav dav ntawm cov qauv, thiab kev saib xyuas cov tswv yim ua ntej qhia txog qib 50W uas tsis muaj coated. Qhov twg cov xwm txheej no tsis tsim nyog, txheej txheej txheej lossis lwm txoj kev tiv thaiv corrosion yuav tsim nyog.
Tej thaj chaw thov
| Daim ntawv thov | Tej Cheebtsam |
|---|---|
| Kev loj choj | Main girders, webs, flanges |
| Railway choj | Choj girders thiab hla cov tswv cuab |
| Cov neeg taug kev txuas hniav | Cov qauv kab teeb thiab cov phaj txhawb nqa |
| Choj rehabilitation | Hloov daim hlau thiab cov tswv cuab cov qauv |
| Sab nraum zoov structural systems | Fabricated load-bearing Cheebtsam, raws li kev cai tsim |
Vuam, Txiav, thiab Fabrication Requirements
A709 Qib 50W daim hlau tuaj yeem ua tiav los ntawm cov txheej txheem steel fabrication, suav nrog nplaim taws, txiav ntshav, drilling, machining, thiab vuam. Txawm li cas los xij, cov khoom siv choj feem ntau yuav raug nruj me ntsis thiab cov kev xav tau vuam.
Piv txwv li, lub phaj 20 hli thiab 50 hli phaj yuav xav tau cov kev txiav sib txawv, kev npaj ntug, thiab cov txheej txheem vuam. Txoj kev ua tiav zaum kawg yuav tsum raug xaiv raws li phaj thickness, sib koom tsim, tsim nyog vuam cov txheej txheem, thiab qhov project specifications.
Vuam yog qhov tseem ceeb tshwj xeeb vim tias cov qauv choj yuav tsum tswj lawv qhov xav tau lub zog thiab toughness tom qab fabrication. Welding consumables yuav tsum tau xaiv raws li nyob rau hauv lub hauv paus hlau, tsim lub zog, toughness yuav tsum tau, thiab seb qhov project npaj los tuav ib tug weathering-steel system.
Weld cov ntsiab lus yuav tsum tau tsim los kom tsis txhob muaj dej tsub zuj zuj thiab crevice corrosion. Cov txheej txheem vuam tsim nyog (WPS) thiab cov ntaub ntawv txhawb nqa kev tsim nyog (PQR) yuav tsum tau ua raws li txoj haujlwm code.
Kev soj ntsuam zoo thiab kev xeem ntawm A709 Qib 50W daim hlau
Kev tshuaj ntsuam xyuas zoo yog qhov tseem ceeb rau cov choj hlau vim tias cov khoom siv ua haujlwm ncaj qha cuam tshuam rau cov qauv kev nyab xeeb. Cov khoom siv tshuaj ntsuam xyuas muaj xws li tshuaj lom neeg muaj pes tsawg leeg, kev ntsuas tensile, kev tshuaj xyuas qhov ntev, kev ntsuam xyuas saum npoo, thiab kev txheeb xyuas qhov ntsuas kub ntawm tus lej traceability.
Kev ntsuam xyuas tensile feem ntau ua raws li ASTM A370, thaum lub sij hawm siv tshuaj thiab cov txheej txheem kev lees paub yuav tsum raug kuaj xyuas tawm tsam ASTM A709 / A709M thiab kev yuav khoom tshwj xeeb.
Rau cov phiaj xwm choj, kev sim ntxiv yuav raug teev raws li cov qauv tsim thiab daim ntawv cog lus. Charpy V-notch impact testing, piv txwv li, tej zaum yuav xav tau rau qee cov khoom siv qib, cov khoom siv, lossis cov xwm txheej hauv qhov project.
Cov neeg yuav khoom yuav tsum tsis txhob xav tias txhua qib 50W kev txiav txim yuav suav nrog tib qhov kev cuam tshuam-kev xeem yuav tsum tau ua. Qhov ntsuas kub uas yuav tsum tau muaj, cov qauv kev taw qhia, cov qauv kev lees paub lub zog, thiab cov qauv siv zaus yuav tsum tau hais meej meej hauv kev yuav khoom.
Order A709 Qib 50W Weathering Steel Phaj los ntawm Gnee
Gnee muab cov khoom siv hlau rau kev tsim choj, kev tsim vaj tsev, thiab kev siv hauv kev lag luam. Thaum muab A709 Qib 50W weathering steel daim hlau, cov neeg yuav khoom tuaj yeem muab cov qib uas xav tau, tuab, dav, ntev, ntau, ASTM tus qauv qauv, thiab cov khoom xa tuaj.
Piv txwv li, ib qho kev nug rau 25 hli × 2,000 hli × 8,000 hli daim hlau yuav tsum qhia kom meej qhov yuav tsum tau muaj, cov ntaub ntawv soj ntsuam, thiab lwm yam yuav tsum tau kuaj ntxiv.
Xaiv cov huab cua kom raug steel yuav tsum tau ntau dua li kev kuaj xyuas nws cov nqi zog. Tshuaj muaj pes tsawg leeg, atmospheric corrosion kuj, phaj qhov ntev, fabrication yuav tsum, thiab project raug tej yam kev mob yuav tsum tau txiav txim siab tag nrho ua ntej txiav txim.
Hu rau Gnee rau A709 Qib 50W Weathering Steel Phaj thiab thov cov lus hais raws li koj tus choj project specifications.
