Taw qhia
Nyob rau hauv niaj hnub structural engineering, qhov kev thov rau siab - lub zog steel hollow seem tau loj hlob zoo li tej yaam num nrhiav kom txo qhov hnyav, txo cov pa roj carbon hneev taw, thiab ua tiav cov qauv tsim tau zoo dua. Ntawm cov qauv European tswj hwm cov khoom no,TS EN 10210stands raws li tus qauv ntsuas kub - tiav cov qauv hollow seem.
Rau cov kws tshaj lij thiab cov kws tsim khoom siv hauv 30-50 hnub nyoog, kev nkag siab txog cov nuances ntawm EN 10210 thiab nws cov qib siab - qib S460 yog qhov tseem ceeb rau kev txiav txim siab txog kev paub txog khoom. Phau ntawv qhia no muab cov lus qhia dav dav ntawm EN 10210 tus qauv, S460 steel qib tsev neeg, nws cov ntawv thov, thiab cov txheej txheem xaiv tseem ceeb.
Tus qauv EN 10210
EN 10210 yog tus qauv European uas qhia txog cov txheej txheem xa khoom raukub- tiav cov qauv hollow seemua los ntawm cov tsis yog- alloy thiab zoo- cov hlau. Nws siv rau qhov hollow seem tsim kub-nrog lossis tsis muaj kev kho cua sov tom qab-los yog tsim txias nrog kev kho cua sov tom ntej saum 580℃kom ua tiav cov khoom sib npaug.
Tus qauv muab faib ua peb ntu:
| Ib feem | Title | Cov ntsiab lus |
|---|---|---|
| TS EN 10210-1 | Cov xwm txheej kev xa khoom | Chemical muaj pes tsawg leeg, mechanical zog, xeem yuav tsum tau, thiab soj ntsuam cov ntaub ntawv |
| TS EN 10210-2 | Tolerances, qhov ntev thiab cov khoom seem | Dimensional tolerances rau ncig, square, rectangular, thiab elliptical seem |
| TS EN 10210-3 | Kev xa tawm cov xwm txheej rau siab zog thiab huab cua resistant steels | Cov qhab nia txuas ntxiv rau cov ntawv thov tshwj xeeb |
EN 10210 npog kub-Tiav seamless, hluav taws xob welded (ERW), thiab submerged arc welded (SAW/LSAW) hollow seem. Cov khoom tsim tawm raws li tus qauv no tau ua raws li CE cim thiab tau lees paub tias tsim nyog rau txhua daim ntawv thov.
S460 Steel Qib
Kev xaiv S460 ua raws li kev sau npe lub npe raws li EN 10210:
| Cheebtsam | Lub ntsiab lus |
|---|---|
| S | Cov qauv hlau |
| 460 | Yam tsawg kawg yield zog ntawm460 MPa raurau thickness Tsawg dua los yog sib npaug li 16 hli |
| N | Normalized los yog normalized -rolled mob |
| H | Hollow seem |
Rau cov thicknesses txog 16 hli, S460 xa tawm qhov tsawg kawg nkaus lub zog ntawm 460 N / mm². Raws li thickness nce, lub zog tawm los txo me ntsis:
Tsawg dua los yog sib npaug li 16 hliUa haujlwm siab: 460 MPa
>16 hli rau Tsawg dua los yog sib npaug li 40 hliUa haujlwm siab: 440 MPa
>40mm rau Tsawg dua lossis sib npaug li 65 hliUa haujlwm siab: 430 MPa
Lub zog tensile yog los ntawm540 MPa rau 720 MPa, nrog yam tsawg kawg nkaus elongation ntawm17%.
S460 Sub{1}} Qib: S460NH, S460NLH, thiab S460MH
Hauv tsev neeg S460, muaj ntau qib sub-qib los hais txog cov kev pabcuam sib txawv. Feem ntau yog:
1 S460 NH
S460 NHyog tus qauv normalized zoo-grain steel qib. Cov yam ntxwv tseem ceeb:
Siab normalizedstructural hollow seem
Tsis muaj kev ntxhov siab sab hauvvim normalizing txheej txheem
Impact toughness: 40J ntawm -20℃(qhov nruab nrab yam tsawg kawg nkaus)
Carbon Equivalent (CEV): Tsawg dua lossis sib npaug li 0.53
Haum rau cov pa qis -kub ib puag ncig
2 S460 NLH
S460 NWSmuab kev txhim kho qis -kub kev ua haujlwm. Cov yam ntxwv tseem ceeb:
Tib yield thiab tensile zog li S460NH
Superior cuam tshuam toughnessntawm qhov kub thiab txias
Lub ntsiab lus"L"qhiaqis -kubkev siv tau
Haum rauarctic thiab alpine tej yam kev mob
Feem ntau siv nyob rau hauv choj girders, siab -altitude railway choj, thiab offshore qauv
Thaum S460NH thiab S460NLH sib koom ntau qhov zoo sib xws raws li EN 10210-1 raws li cov qauv hlau zoo, lawv txawv qhov sib txawv hauvqis-kub qhov kev ua haujlwm.
3 S460MH
S460MHyog covthermo-khoov tshuab(M-condition) sib piv:
CEV: Tsawg dua lossis sib npaug rau 0.46 (qis dua S460NH)
Haum rau txias- daim ntawv thov tsim raws li EN 10219
Muab cov weldability zoo vim qis CEV
Kev sib piv
| Khoom | S460 NH | S460 NWS | S460MH |
|---|---|---|---|
| Qhov xwm txheej | Normalized (N) | Normalized (N) | Thermo-mechanical (M) |
| Yield zog (tsawg dua lossis sib npaug li 16mm) | 460 MPa rau | 460 MPa rau | 460 MPa rau |
| Tensile zog | 540-720 MPa | 540-720 MPa | 540-720 MPa |
| Impact Test Temp | -20 degree | -50 degree | -20 degree |
| CEV (max) | 0.53 | 0.53 | 0.46 |
| Khoom Naj Npawb | 1.8953 | 1.8956 | 1.8849 |
Chemical Composition (Cast Analysis)
Rau EN 10210-1 S460 qib (thickness Tsawg dua lossis sib npaug li 65 hli):
| Element | S460NH / S460NLH (max %) |
|---|---|
| C | 0.22 |
| Si | 0.60 |
| Mn | 1.00–1.70 |
| P | 0.035 |
| S | 0.030 |
| Nb | 0.050 |
| V | 0.20 |
| Al (tag nrho, min) | 0.020 |
| Ti | 0.03 |
| Cr | 0.30 |
| Ni | 0.80 |
| Mo | 0.10 |
| Cu | 0.70 |
| N | 0.025 |
Cov ntsiab lus carbon tsawg (tsawg dua lossis sib npaug li 0.22%) ua kom ntseeg tauzoo heev weldabilitythiab formability. S460NH thiab S460NLH raug cais raws lialloy tshwj xeeb steels.
Daim ntawv thov
S460 hollow seem tau teev nyob rau hauv ib tug dav spectrum ntawm xav tau cov qauv siv:
Tsev thiab Kev Tsim Kho:
High-cov qauv tsim tsim
Chaw ntau pob thiab pej xeem vaj tse
Steel qauv thiab steel tsev
Railway chaw nres tsheb, tshav dav hlau, thiab tsheb npav terminals
Infrastructure:
Cov choj- suav nrog choj girders thiab railway choj trusses
Kev sib txuas lus yees
Offshore platforms
Industrial:
Cov tshuab hnyav txhawb nqa
Crane girders thiab khoom siv
Cov khoom siv ua liaj ua teb
Cov ntawv thov tshwj xeeb
S460 NH: Kev siv cov qauv siv dav dav, cov pa qis - qhov kub thiab txias
S460 NWS: Arctic thiab alpine qauv, daim ntawv thov hauv cheeb tsam polar, qis -kub txuas hniav, cua turbine yees
S460MH: Txias- tsim cov qauv siv
S460 vs S355
Rau kev txiav txim siab yuav khoom- ua, nkag siab qhov sib txawv ntawm S460 thiab S355 ntau dua yog qhov tseem ceeb:
| Khoom | S355 | S460 | Qhov zoo |
|---|---|---|---|
| Yield zog (tsawg dua lossis sib npaug li 16mm) | 355 MPa rau | 460 MPa rau | S460: +30% |
| Yield zog (tsawg dua los yog sib npaug li 40mm) | 345 MPa rau | 440 MPa rau | S460: +28% |
| Tensile zog | 470-630 MPa | 540-720 MPa | S460: siab |
| CEV | qis | Siab dua | S355: zoo weldability |
Cov ntsiab lus tseem ceeb thaum xaiv S460 Tshaj S355:
Qhov zoo ntawm S460:
Qhov hnyav txuag: Tsawg kawg20% poob phauspiv rau S355 hauv lub zog- txwv tsis pub siv
Txo cov pa roj carbon hneev taw: Cov qauv sib dua txhais tau tias cov khoom siv tsawg dua thiab qis dua kev thauj mus los
Cov khoom siv nyiaj txuag: Txawm hais tias qib steel nqi ntau dua ib tonne, qhov txo tonnage feem ntau ua rau tag nrho cov phiaj xwm txuag
Cov qauv sib dua: Ua kom muaj kev ua kom zoo dua qub thiab tsim kom zoo nkauj
Kev pauv - tawm:
Higher CEV: Yuav tsum tau ceev faj ntxiv cov txheej txheem vuam
Cov khoom siv ntau duarau tonne
Muaj tsawghauv qee qhov ntau thiab tsawg piv rau S355
Q&A
Q1: Puas tuaj yeem siv S460NH thiab S460NLH sib hloov?
Tsis muaj.Thaum lawv sib koom tib qhov tawm los thiab lub zog tensile, S460NLH muaj qhov zoo tshaj qhov qis - qhov kub thiab txias cuam tshuam. Siv S460NH hauv -50℃daim ntawv thov yuav yog qhov tsim tsis ua haujlwm. Nco ntsoov xyuas qhov ntsuas qhov ntsuas qhov ntsuas qhov xav tau.
Q2: Dab tsi yog "H" hauv S460NH sawv rau?
"H"qhiaHollow seem. Qhov no distinguishes nws los ntawm cov phaj los yog cov khoom seem.
Q3: Qhov luaj li cas muaj nyob rau hauv S460 hollow seem?
S460 muaj nyob rau hauv lub voj voog (OD txog 2,500 hli), square (txog 800 hli × 800 hli), thiab cov duab plaub (txog 750 hli × 500 hli) ntu. Phab ntsa thicknesses txog li 120 mm rau cov seem.
Rau kev nug lossis thov cov lus hais rau EN 10210 S460 hollow seem, thov hu rau peb pab pawg muag khoom engineering. Peb muab kev txhawb nqa tag nrho, suav nrog kev pab xaiv qib, cov lus pom zoo ntawm cov txheej txheem vuam, thiab qhov project- qhov tshwj xeeb sizing.
