S355G10+N Offshore Steel Phaj yog dab tsi?
S355G10+N yog ib tug hwm normalized offshore structural steel phaj tsim rauTS EN 10225tus qauv, tshwj xeeb yog tsim los rau hnyav- thauj khoom tseem ceeb hauv cov cheeb tsam huab cua txias xws li North Hiav Txwv thiab Arctic cheeb tsam.
Raws li qib siab tshaj plaws nyob rau hauv S355G offshore steel tsev neeg, nws muab kev ruaj ntseg tawg toughness tom qab post-weld kho cua sov (PWHT), ultra- tsis tshua muaj leej faj thiab phosphorus cov ntsiab lus, thiab sib xws los ntawm -thickness mechanical zog mus txog 150mm thickness. Nws ncaj qha daws cov kev lag luam tsis ua haujlwm - toughness degradation tom qab PWHT, lamellar tearing nyob rau hauv daim hlau tuab, thiab qis -kub brittle fracture - uas nquag tshwm sim thaum siv tus qauv S355G9 lossis cov qauv hlau dav dav hauv kev thov cov haujlwm sab nrauv.
Nws yog qib uas tau teev tseg rau qhov loj offshore roj & roj tsho platforms, tuab -section offshore cua foundations, thiab Arctic LNG cov qauv uas weld stress nyem thiab huab cua txias yog yuav tsum tau.
Tag Nrho Tag Nrho ntawm S355G10+N Qib Code
Txhua tus cwj pwm hauv qib npe muaj cov ntsiab lus tseeb ntawm EN 10225 specification:
S- Cov qauv hlau, rau kev thauj khoom -cov kabmob welded kev tsim kho
355- Yam tsawg kawg nkaus lub zog ntawm 355MPa rau thickness Tsawg dua los yog sib npaug rau 16mm; lub zog qhov tseem ceeb txo qis me ntsis nrog nce thickness ntawm cov ntxhuav txheem
G- Offshore platform tshwj xeeb qib, ua raws li EN 10225 ntxiv toughness thiab purity yuav tsum tau rau kev pab cuam offshore
G10- Sab saum toj- qib kev ua tau zoo hauv S355G series, nrog peb qhov yuav tsum tau ua tshwj xeeb:
- Yuav tsum tau CTOD (Crack Tip Opening Displacement) kev sim tom qab simulated PWHT, kom ntseeg tau tias qhov tawg tsis kam nyob ruaj khov tom qab kev tshaj tawm -weld stress nyem
- Ultra- nruj impurity txwv: S Tsawg dua lossis sib npaug rau 0.005%, P Tsawg dua lossis sib npaug rau 0.015%, nruj dua qib G8 thiab G9
- Yam tsawg kawg nkaus 50J transverse Charpy V-qhov cuam tshuam lub zog ntawm -40 degree
- +N- Kev xa khoom zoo li qub. Cov phaj tau txais kev kho cua sov tag nrho tom qab dov, ua kom zoo ib yam -grain microstructure hla tag nrho cov phaj tuab. Qhov no ua kom cov cuab yeej ua haujlwm zoo ib yam txawm tias nyob hauv qhov hnyav - ntsuas qhov ntsuas, thiab tswj kev ua haujlwm ruaj khov tom qab ntawm - qhov chaw vuam thiab PWHT.
Tus qauv twg siv rau CTOD kev sim ntawm S355G10+N?
CTOD kuaj rau S355G10+N feem ntau ua raws li BS 7448 lossis ISO 12135, ntawm cov qauv uas tau simulated PWHT thermal cycles kom rov ua dua qhov tseeb ncej- vuam tej yam kev mob.
Tam sim no, koj yuav nug: "Puas tsis S355G9 lossis TMCP zoo txaus rau feem ntau txoj haujlwm?" Lo lus teb yog ruaj "Tsis yog" -yogkoj qhov project muaj cov nodes tuab, Arctic kub, los yog yuav tsum tau PWHT. Hauv qab no yog tsib qhov txiaj ntsig tshwj xeeb uas txhawb nqa S355G10+N deb dhau qhov kev hloov kho tshiab yooj yim - lawv yog cov laj thawj vim li cas cov engineers xaiv nws thaum tsis ua haujlwm tsuas yog tsis muaj kev xaiv.
Nyem kom tau txais cov qauv dawb
Tshwj Xeeb Tshwj Xeeb Zoo ntawm S355G10+N cov qauv hlau
S355G10+N tsis yog ib qho kev hloov kho tshiab ntawm cov hlau sab ntug dej hiav txwv zoo ib yam - nws hais txog cov kev pheej hmoo ua tsis tiav uas cov qib qis tsis tuaj yeem daws tau.
1. ruaj khov toughness tuav tom qab tag nrho PWHT
Qhov no yog qhov zoo tshaj plaws irreplaceable ntawm S355G10+N. Loj offshore tubular pob qij txha thiab tuab - cov qauv node yuav luag ib txwm xav tau tag nrho cov ncej-weld stress relief heat treatment. Standard S355G9 thiab TMCP-qib steels raug kev txom nyem hnyav poob tom qab xws li thermal cycles, tsa brittle fractures. S355G10+N yog tsim nyog nrog PWHT- simulated CTOD kev sim, thiab nws cov kev cuam tshuam thiab tawg toughness nyob twj ywm nyob rau hauv specification tom qab kev kho cua sov - ua rau nws yog ib tug yuav tsum tau teev los ntawm North Sea tsim lub koom haum rau cov tseem ceeb welded nodes.
2. Uniform los ntawm -thickness zog mus txog 150mm siab tshaj plaws thickness
Ua tsaug rau cov txheej txheem normalizing, S355G10+N tswj cov txheej txheem microstructure zoo ib yam thiab kev ua haujlwm txhua yam los ntawm qhov chaw mus rau qhov tseem ceeb, txawm tias ntawm 150mm thickness. Los ntawm kev sib piv, S355G10+M (TMCP tus me nyuam) tsuas yog tau ntawv pov thawj txog li 100mm thickness, thiab cov khoom tseem ceeb degrade noticeably nyob rau hauv hnyav gauges. Rau tuab- phaj foundations thiab thauj khoom- cov kabmob ntawm qhov siab tshaj 100mm, S355G10+N yog qhov kev xaiv S355-qib nkaus xwb.
3. Ultra-kev muaj pes tsawg leeg rau kev tiv thaiv zoo tshaj -lamellar tearing kev ua tau zoo
Nrog sulfur tswj qis dua 0.005% thiab phosphorus qis dua 0.015%, ua ke nrog kev kho calcium rau sulfide zoo tswj, S355G10+N tau zoo heev los ntawm - thickness ductility. Nws tuaj yeem muab tau nrog Z15, Z25 lossis Z35 Z- kev taw qhia cov khoom pov thawj, zoo tshem tawm lamellar tearing txaus ntshai thaum lub sij hawm ntau- dhau tuab- phaj vuam - ib qho kev ua tsis tau zoo thiab kim heev hauv kev tsim cov tsho sab nrauv.
4. Kev ntseeg siab qis -kub toughness rau Arctic thiab North Sea kev pabcuam
S355G10+N lav qhov tsawg kawg nkaus 50J transverse cuam tshuam lub zog ntawm -40℃, thiab muab cov pob txha ruaj khov nyob rau hauv lub sijhawm ntev dynamic qaug zog thiab kev thauj khoom cyclic nyob rau hauv marine ib puag ncig. Qhov no ua rau nws tsim nyog rau xyoo- kev ua haujlwm ib puag ncig hauv sub- xoom offshore huab cua, zam kev puas tsuaj rau pob txha tawg tshwm sim los ntawm cov khoom siv kub-kub embrittlement.
5. Tsawg carbon sib npaug rau kev ruaj ntseg vuam
Nrog nruj tswj hwm cov pa roj carbon thiab alloy cov ntsiab lus thiab qis CEV tus nqi, S355G10+N muaj qhov tsis tshua muaj kub tawg thaum lub sijhawm vuam. Nws txo cov kev xav tau ua ntej ua ntej rau ntawm -qhov chaw tuab- phaj vuam, ua kom yooj yim cov txheej txheem tsim kho, thiab txo qis tag nrho cov nqi tsim khoom rau cov neeg ua haujlwm sab nrauv EPC thiab cov khoom siv hlau.
Tshuaj muaj pes tsawg leeg ntawm S355G10+N offshore steel
| Element | Tus nqi | Element | Tus nqi |
|---|---|---|---|
| C | Tsawg dua lossis sib npaug li 0.12 | Si | 0.15–0.55 |
| Mn | Tsawg dua lossis sib npaug li 1.65 | P | Tsawg dua lossis sib npaug li 0.015 |
| S | Tsawg dua los yog sib npaug li 0.005 | Ni | Tsawg dua los yog sib npaug li 0.7 |
| Cr | Tsawg dua los yog sib npaug li 0.2 | Mo | Tsawg dua los yog sib npaug rau 0.08 * |
| Cu | Tsawg dua los yog sib npaug li 0.3 | Nb | Tsawg dua lossis sib npaug li 0.03 |
| V | Tsawg dua los yog sib npaug li 0.06 | Ti | Tsawg dua lossis sib npaug li 0.025 |
| Alt | 0.015–0.055 | N | Tsawg dua lossis sib npaug li 0.010 |
| B | Tsawg dua lossis sib npaug li 0.0005 | Ca | Tsawg dua los yog sib npaug li 0.005 |
| Pb | Tsawg dua lossis sib npaug li 0.010 | Ceq max | Tsawg dua lossis sib npaug li 0.43 |
| Pcm max | Tsawg dua lossis sib npaug li 0.22 |
Mechanical Properties of S355G10+N steel
| Thickness (hli) | Kev xa khoom | ReH (MPa) min | ReH/Rm ratio max | Rm (MPa) | A (%) min | Kev taw qhia cuam tshuam | Impact temp. (degree) | Akv (J) min |
|---|---|---|---|---|---|---|---|---|
| Tsawg dua los yog sib npaug li 16 | Normalized los yog normalized dov | 355 | 0.87 | 470–630 | 22 | Hloov | –40 | 50 |
| > 16 – 25 | Normalized los yog normalized dov | 355 | 0.85 | 470–630 | 22 | Hloov | –40 | 50 |
| > 25 – 40 | Normalized los yog normalized dov | 345 | 0.85 | 470–630 | 22 | Hloov | –40 | 50 |
| > 40 – 63 | Normalized los yog normalized dov | 335 | 0.85 | 470–630 | 22 | Hloov | –40 | 50 |
| > 63 – 100 | Normalized los yog normalized dov | 325 | 0.85 | 470–630 | 22 | Hloov | –40 | 50 |
| > 100 – 150 | Normalized los yog normalized dov | 320 | 0.85 | 460–620 | 22 | Hloov | –40 | 50 |
Daim ntawv thov raug xwm txheej ntawm S355G10+N Offshore Phaj
S355G10+N tau teev tseg rau siab- ceg txheem ntseeg, tuab- ntu sab nraud cov qauv uas tsis ua tiav.
Tsau offshore roj & roj platform hnyav tubular pob qij txha
Cov tsho tseem ceeb ntawm lub tes tsho, lub tes tsho thiab riser txhawb nqa rau North Hiav Txwv thiab Lavxias Arctic platforms, qhov twg tag nrho cov ncej -weld kev ntxhov siab yog yuav tsum tau ua raws li qhov project specification.
Thick -section offshore cua tsho lub hauv paus
Lub ntsiab thauj khoom-cov kabmob nodes thiab cov khoom hloov pauv nrog cov tuab tshaj 100mm, tshwj xeeb tshaj yog rau cov cua ua liaj ua teb hauv cov dej txias sab qaum teb uas yuav tsum tau ua kom qaug zog.
Arctic LNG thiab hnyav offshore qauv
Tsawg-kev txhawb nqa qhov kub thiab txias, FPSO hnyav load brackets, thiab lwm yam tuab - phaj qauv ua haujlwm nyob rau hauv qhov chaw txias marine.
Thaum twg tsis xaiv S355G10+N?
Rau daim hlau nyias dua 60 hli, cov khoom uas tsis tas yuav tsum muaj PWHT tag nrho, los yog cov tswv cuab ntawm cov txheej txheem thib ob, S355G10+M lossis S355G9 yuav muab cov nqi zoo dua. Peb tuaj yeem pab koj xaiv cov qib qis tshaj plaws raws li koj qhov project xav tau.
S355G10+N vs S355G10+M vs S355G9
| Parameter | S355G10+N | S355G10+M | S355G9+N / +M |
|---|---|---|---|
| Kev xa khoom | Normalized kho cua sov | TMCP (thermo-txheej txheem dov) | Normalized los yog TMCP |
| Max ntawv pov thawj thickness | 150 hli | 100 hli | 100mm (M) / 150 hli (N) |
| PWHT CTOD xav tau | Yuav tsum tau, tsim nyog tom qab PWHT | Tsis xav tau tom qab PWHT | Tsis xav tau PWHT CTOD |
| S & P txwv | S Tsawg dua lossis sib npaug li 0.005%, P Tsawg dua lossis sib npaug li 0.015% | S Tsawg dua lossis sib npaug li 0.005%, P Tsawg dua lossis sib npaug li 0.015% | S Tsawg dua lossis sib npaug rau 0.010%, P Tsawg dua lossis sib npaug li 0.020% |
| Tej daim ntawv thov | Cov tuab tseem ceeb ntawm qhov xav tau tag nrho PWHT; Arctic & North Hiav Txwv hnyav cov qauv | Nruab nrab-thickness theem nrab qauv; tsis muaj PWHT tag nrho | General offshore decks, braces thiab non{0}}cov khoom tseem ceeb |
| Tus nqi txheeb ze & lub sijhawm ua haujlwm | Tus nqi siab dua, lub sijhawm ua haujlwm ntev dua | Tus nqi nruab nrab, lub sij hawm luv luv | Tus nqi qis dua, lub sijhawm luv tshaj plaws |
Puas tuaj yeem S355G10+M hloov S355G10+N rau daim hlau tuab tshaj 100mm?
No. S355G10+M yog tsim los ntawm TMCP txheej txheem nrog lub siab tshaj plaws certified thickness ntawm 100mm, thiab nws toughness degrades noticeably tom qab tag nrho PWHT. Rau cov khoom tuab dua 100mm lossis cov qauv uas xav tau tag nrho cov ncej-weld kev ntxhov siab nyem, S355G10+N yog tib qho kev xaiv tsim nyog hauv S355G series.
Tus nqi sib txawv ntawm S355G10+N thiab S355G9 steel phaj yog dab tsi?
S355G10+N feem ntau yog 25%–40% kim dua ib tuj dua S355G9, vim muaj kev tswj kom huv huv nruj dua, normalizing kev kho cua sov, thiab kuaj CTOD ntxiv. Qhov sib txawv kiag li nyob ntawm thickness, kom muaj nuj nqis thiab kev soj ntsuam ntxiv.
GNEE Steel Supply & Export Support rau S355G10+N
Raws li tus kws tshaj lij ntawm EN 10225 offshore steel daim hlau nrog kev nkag ncaj qha mus rau cov tuam txhab suav nrog cov ntawv pov thawj loj, peb muab tag nrho -cov kev pabcuam txhawb nqa los txhawb koj qhov kev yuav khoom:
Daim ntawv pov thawj puv pob
EN 10204 3.2 MTC muab los ntawm thib peb- tog neeg soj ntsuam lub cev, ntxiv rau DNV GL / LR zeb cov ntaub ntawv pom zoo, ua raws li cov kev xav tau ntawm kev sib tw offshore.
Customized soj ntsuam xaiv
100% UT ultrasonic soj ntsuam ib EN 10160, Z-kev taw qhia tensile xeem, -40℃Charpy impact test, thiab CTOD puas toughness kuaj nrog tag nrho cov ntaub ntawv thawj.
Tus nqi - ntxiv kev ua haujlwm
Precision ntshav / nplaim taws / laser txiav, V / X / K bevel machining, tua blasting thiab khw primer pretreatment, npaj rau kev tsim khoom ncaj qha thaum xa khoom.
Precision txiav: nplaim taws, ntshav thiab laser txiav raws li CAD cov duab kos, paub txog ze ntawm -net-puab blanking thiab txo rau ntawm - cov khoom poob los ntawm ntau dua 30%.
Export logistics & ntim
Txheem seaworthy export ntim, fumigation -dawb ntoo txhawb, thiab tag nrho hiav txwv freight / FOB / CIF tov rau offshore project cargo.
Koj qhov project qhov kev vam meej dai ntawm cov hlau koj xaiv - thiab thaum PWHT, Arctic txias, thiab 150mm thickness nyob rau ntawm lub rooj, tsis muaj qhov hloov pauv. Tsis txhob twv txiaj ntawm kev ua haujlwm; ruaj khov qib uas lub ntiaj teb xav tau tshaj plaws cov neeg ua haujlwm offshore ntseeg. Nrog peb cov mill-direct supply, tag nrho traceability, thiab raws sij hawm tus me nyuam, peb ua kom nws yooj yim los piav qhia S355G10+N rau koj qhov tseem ceeb tom ntej node.
Tag nrho EN 10225 Offshore Steel Qib Muaj nyob ntawm GNEE Steel
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Txuj |
Qib Steel |
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TS EN 10225 |
S355G2+N |
S355G3+N |
S355G7+N |
S355G8+N |
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S355G9+N |
S355G5+M |
S355G6+M |
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S355G7+M |
S355G8+M |
S355G9+M |
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S420G1+M |
S420G2+M |
S420G1+QT |
S420G2+QT |
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S460G1+M |
S460G2+M |
S460G1+QT |
S460G2+QT |
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