ABS EQ51 Hlau Phaj
ABS EQ51 yog ib qho ultra- siab zog marine steel phaj ntawv pov thawj los ntawm American Bureau of Shipping (ABS). Nws yog tsim los ntawm quenching thiab tempering (Q + T) los yog thermo-mechanical controlled rolling (TMCP), ua raws li ABS Cov Cai rau Cov Hlau Hlau thiab marine steel qauv ASTM A131 / A131M.
Qib Definition
E: Yuav tsum tau Charpy V-qhov ntsuas qhov cuam tshuam ntawm -40℃kom lav qhov kub tsis tshua muaj qhov tawg tsis kam;
Q: Quenched & Tempered tus me nyuam mob rau ultra- siab zog marine steel;
51: Nominal yam tsawg kawg nkaus tawm lub zog ntawm 500 MPa (73 ksi).
Qhov loj muaj thickness ntau: 6 hli-300 hli, siab tshaj plaws kev cai dav txog 4850 hli. Txiav - mus rau - qhov ntev ntawm kev ua tiav yog muaj raws li qhov ntev ntawm cov khoom siv. Daim ntawv pov thawj rau Z-kev taw qhia lamellar tearing resistance (Z15/Z25/Z35) tuaj yeem muab rau cov pob qij txha thiab hnyav- ntsuas siab- thauj khoom welded pob qij txha.
DNV E500 (NV E500) Hlau Phaj
DNV E500 yog lub siab -lub zog offshore qauv steel pom zoo los ntawm Det Norske Veritas (DNV), ua raws li cov qauv hlau sab nrauv DNV-OS-B101.
Qib Definition
E: Yuav tsum tau -40℃qis-temperature cuam tshuam khoom, raws li ABS Qib E series steel;
500: Qhia meej meej qhov tsawg kawg nkaus tawm lub zog ntawm 500 MPa rau kev xam ncaj qha engineering.
Qib no yog qhov sib npaug ncaj qha ntawm ABS EQ51 hauv DNV daim ntawv pov thawj, nrog cov txheej txheem tsim khoom zoo tib yam (TMCP / Q + T / normalizing). Nws ua haujlwm raws li cov khoom siv zoo tshaj plaws rau kev tsim kho tshiab thiab kho dua tshiab ntawm cov chaw sab nrauv uas xav tau DNV cov ntawv pov thawj hauv Tebchaws Europe, Norway thiab Southeast Asia.
ABS EQ51 thiab DNV E500 High Strength Shipbuilding Steel Phaj Specification
| Yam khoom | Specification |
|---|---|
| Khoom npe | High Strength Shipbuilding Steel Phaj |
| Muaj Qib | ABS EQ51, DNV E500 |
| Classification Standards | ABS, DNV |
| Qeb Hlau | High Strength Marine Structural Steel |
| Kev tsim khoom | TMCP (Thermo-Mechanical Controlled Processing) los yog quenched & Tempered |
| Thickness | 6-300 hli |
| Dav | 1500-4850 hli |
| Ntev | 3000-18000 hli |
| Kev Xa Khoom | TMCP / Q + T |
| Nto tiav | Ntuj Zeb Nto, Txhaj Tshuaj Txhaum Cai, Khw Primer (yeem) |
| Kev tshuaj xyuas | Tshuaj ntsuam xyuas, Tensile Test, Charpy Impact Test, Ultrasonic Test (Optional), Dimensional Inspection |
| Daim ntawv pov thawj | Mill Test Certificate (EN 10204 3.1), ABS lossis DNV Classification Approval (raws li xav tau) |
| Kev Pabcuam | CNC txiav, nplaim txiav, Plasma txiav, Beveling |
ABS EQ51 thiab DNV E500 High Strength Steel Phaj Chemical Composition
| Element | ABS EQ51 Max Cov ntsiab lus | DNV E500 Max Cov ntsiab lus |
|---|---|---|
| C | 0.20% | 0.20% |
| Si | 0.55% | 0.55% |
| Mn | 1.70% | 1.70% |
| P | 0.030% | 0.030% |
| S | 0.030% | 0.030% |
| N | 0.020% | 0.020% |
| Al (Min.) | 0.018% | 0.018% |
| Nb | 0.06% | 0.06% |
| V | 0.12% | 0.12% |
| Ti | 0.05% | 0.05% |
| Cr | 1.50% | 1.50% |
| Mo | 0.70% | 0.70% |
| Ni | 3.50% | 3.50% |
| Cu | 0.55% | 0.55% |
ABS EQ51 thiab DNV E500 High Strength Steel Phaj Mechanical Property
| Mechanical Index | ABS EQ51 Tus Qauv Tus Nqi | DNV E500 Tus Qauv Tus Nqi |
|---|---|---|
| Yam tsawg kawg Yield Strength (ReH) | 500 MPa | 500 MPa |
| Tensile zog (Rm) | 610-770 MPa | 610-770 MPa |
| Tsawg kawg Elongation (A₅) | 16% | 16% |
| Lub xeev xa khoom | Q + T / TMCP / N | Q + T / TMCP / N |
| Qhov siab tshaj plaws muaj Thickness | 300 hli | 250 hli |
ABS EQ51 thiab DNV E500 Shipbuilding Steel Phaj Weldability Yam ntxwv
ABS EQ51 thiab DNV E500 sib koom ua haujlwm vuam zoo ib yam ua tsaug rau lawv cov hlau alloy sib xyaw thiab sib npaug sib npaug.
Zuag qhia tag nrho Weldability
Cov pa roj carbon tsawg sib npaug txo cov tawv nqaij tawv hauv cov cua sov- cuam tshuam cheeb tsam (HAZ). Preheating kub tau pom zoo raws li hauv qab no kom tsis txhob muaj hydrogen-induced txias cracking:
- Phaj thickness Tsawg dua los yog sib npaug li 50 hli: 80 degree
- 50 hli ＜ Thickness Tsawg dua los yog sib npaug rau 150 hli: 100-120 degree
- Thickness ≥150mm: 130-150 degree
Siv tau cov txheej txheem vuam
Tau tshaj SMAW (Shielded Hlau Arc Vuam), FCAW (Flux-Cored Arc Vuam nrog CO₂ shielding), SAW (Submerged Arc Vuam) thiab GMAW (Gas Metal Arc Vuam). Txhawm rau kom ua tiav cov khoom siv sib xyaw ua ke rau cov pob qij txha welded, sib piv siab - lub zog qis - qhov kub thiab txias vuam siv tau yuav tsum tau txais yuav (550 MPa yield zog qib nrog ntawv pov thawj Charpy cuam tshuam toughness ntawm-40 degree).
Tshaj tawm -Kev kho cua sov (PWHT)
PWHT tuaj yeem ua raws li kev xaiv rau cov tswv cuab ntawm cov qauv. Yuav tsum tau PWHT (tempering ntawm580-620 degree) yog yuav tsum tau rau cov pob qij txha thiab thauj khoom -cov kabmob nodal kev sib txuas ntawm drilling platforms kom txo tau qhov kev ntxhov siab ntawm qhov seem.
ABS EQ51 thiab DNV E500 Plate Corrosion Resistance thiab qaug zog ua haujlwm
Marine Corrosion Resistance
Ob lub ABS EQ51 thiab DNV E500 steel daim hlau yog tsim los nrog kev tswj xyuas nruj ntawm cov khoom tsis zoo xws li sulfur (S) thiab phosphorus (P), nrog cov kab tooj liab (Cu) alloying ntxiv rau retard atmospheric corrosion nyob rau hauv ntsev pos huab.
- Base Material Performance: Tsis muaj qhov sib txawv ntawm qhov kev ua tau zoo ntawm ob qib hais txog ntsev tsuag corrosion nyob rau hauv marine splash cheeb tsam thiab electrochemical corrosion nyob rau hauv lub tidal cheeb tsam.
- Lus Cim Txwv: Tsis yog ABS EQ51 lossis DNV E500 tsim nyog raws li huab cua los yog corrosion-cov hlau tsis muaj zog. Rau lub sijhawm ntev - kev pabcuam nyob rau hauv marine ib puag ncig, tag nrho marine anti-corrosion txheej txheej txheej (epoxy primer + intermediate coat + topcoat) yog qhov yuav tsum tau ua, lossis kev tiv thaiv cathodic yuav tsum tau siv rau cov khoom siv hauv qab hiav txwv.
- Z- Kev taw qhia kev ua tau zoo: Cov ntawv hlau tau lees paub rau Z15 / Z25 / Z35 cov lus qhia tshwj xeeb tau zoo tiv thaiv lamellar tearing ntawm cov pob qij txha vim los ntawm kev sib xyaw ua ke ntawm cyclic marine kev nyuaj siab thiab corrosion, uas yog ib qho yuav tsum tau ua rau cov tubular sib koom ua ke steel siv rau FPSO (Floating Productions Storage and Offloading Unit).
Fatigue Performance
ABS EQ51 thiab DNV E500 xatib yam qaug zog txwv: nyob rau hauv cyclic loading ntawm 2 × 10⁶ cycles, lub zog qaug zog txwv ntawm ob qib nce mus txog kwv yees li 260 MPa. Lawv muaj feem xyuam rau marine crane pedestals, longitudinal hull girders thiab hoisting lug ntawm drilling platforms raug rau ntev -lub sij hawm cyclic yoj loads. Kev kho deg sib tsoo ntawm cov ntiv taw tuaj yeem txuas ntxiv lub neej qaug zog los ntawm 20% -30%. Muab qhov sib npaug saum npoo tiav thiab vuam zoo, tsis muaj qhov sib txawv ntawm qhov kev ua tau zoo tuaj yeem pom ntawm ob qib steel.
ABS EQ51 thiab DNV E500 High Strength Phaj Hom Daim Ntawv Thov
ABS EQ51 Daim ntawv thov tseem ceeb
- Thawv nkoj hatch coaming, polar nkoj hull thiab lawj qauv;
- ABS- cais tawm jack- tawm ntawm ntug dej hiav txwv drilling platforms, MODU mobile offshore drilling units, platform cantilever beam thiab ceg khib qauv;
- Marine heavy lifting cranes, offshore cua fais fab installation ships rau American thiab Middle East marine tej yaam num;
- Offshore auxiliary nkoj, floating dock key load-cov kabmob cov khoom siv yuav tsum tau ua ntawv pov thawj ABS.
DNV E500 Daim ntawv thov tseem ceeb
- North Sea offshore roj & roj platforms, Norwegian ntug hiav txwv dej hiav txwv engineering chaw (yuav tsum tau ntawv pov thawj DNV);
- DNV-chav kawm FPSO, FPU floating ntau lawm units, subsea module txhawb ncej;
- European shipyard-ua hnyav- nqa nkoj, sab ntug dej hiav txwv cua hauv paus steel qauv;
- Marine tej yaam num nyob rau sab hnub tuaj Asia thiab Australia nrog DNV kev faib pawg neeg saib xyuas cov cai.
Ib -Tshwj tsis yog los ntawm GNEE Steel
Nrog 18 xyoo ntawm kev ua haujlwm marine siab - zog steel export kev, GNEE Steel tau dhau ISO9001 zoo system, CE khoom ntawv pov thawj, ABS / DNV cuaj loj kev faib pawg neeg zeb Hoobkas ntawv pov thawj, nrog 7 lub tsev warehouses, exported rau ntau tshaj 60 lub teb chaws thoob ntiaj teb, ua hauj lwm rau sab saum toj shipyards thiab offshore E. Peb muab tag nrho -cycle technical thiab kev pabcuam rau ABS EQ51 thiab DNV E500 daim hlau:
Custom Physical & NDT Testing Service
Kev ntsuas tus qauv: Chav-kub tensile, -40℃Charpy cuam tshuam, tshuaj lom neeg muaj pes tsawg leeg spectral tsom xam;
Optional enhanced soj ntsuam: Z15/Z25/Z35 Z-kev taw qhia tensile xeem, tag nrho- phaj UT ultrasonic flaw detection (theem I/II), CTOD tawg tip open displacement test, SGS thib peb- tog neeg soj ntsuam tim khawv;
Cov ntaub ntawv ntsuam xyuas txuas nrog rau cov ntaub ntawv xa mus rau kev faib tawm ncaj qha hauv zej zog ua ntaub ntawv.
Tus nqi ua haujlwm sib sib zog nqus-Kev Pabcuam Ntxiv
CNC nplaim taws/plasma txiav, phaj dabtsi yog khoov, ntug milling, tua blasting xeb tshem tawm, marine anti-corrosion primer ua ntej- txheej, tsau- qhov loj me me raws li cov neeg siv khoom xav tau, txo ntawm - qhov chaw ua haujlwm ua haujlwm rau shipyards.
Kev Ua Haujlwm Kev Ua Haujlwm Tom Qab -Kev Pabcuam Muag
Marine steel welding engineer team muab cov txheej txheem vuam pub dawb tsis muaj kev taw qhia, tuab phaj preheating & PWHT cov txheej txheem cov lus qhia, cov khoom siv qib hloov cov ntaub ntawv ua qauv qhia.
Xa koj qhov project kos duab, kev faib pawg neeg xav tau, thickness dimension xav tau rau GNEE technical team tam sim no, peb yuav muab cov ntawv sib piv kev sib piv ntawm ABS EQ51 vs DNV E500 + cov lus tseeb + cov ntawv tshaj tawm muaj nyob hauv 2 teev ua haujlwm, txhawb L / C tsab ntawv ntawm kev them nyiaj rau kev muag khoom txawv teb chaws.
Xa koj qhov project kos duab, kev faib pawg neeg xav tau, thickness dimension
FAQ
Puas yog ABS EQ51 sib npaug rau DNV E500?
Yog lawm, ABS EQ51 yog sib npaug rau DNV E500. Ob leeg yog ultra-siab- lub zog ntawm cov qauv thiab cov qib shipbuilding steel nrog cov ntsiab lus tseem ceeb ntawm cov tshuab.
DNV E500 puas tuaj yeem hloov ABS EQ51?
Yog lawm, DNV E500 (NV E500) feem ntau tuaj yeem hloov ABS EQ51 (AB/EQ51) vim tias lawv yog cov sib npaug ultra-siab- lub zog hull structural steel qib txhais los ntawm cov koom haum sib txawv. Ob qho tib si qhia qhov tsawg kawg nkaus lub zog ntawm 500 MPa thiab qhov ntsuas kub zoo ib yam (-40℃rau 'E' / 'EQ' qib).
Dab tsi yog qhov txawv ntawm ABS thiab DNV kev faib tawm?
ABS (American Bureau of Shipping) thiab DNV (Det Norske Veritas) sib txawv hauv lawv lub hauv paus hauv cheeb tsam, kev tsom xam, thiab cov txheej txheem engineering. ABS yog Teb Chaws Asmeskas-raws li kev tsom mus rau kev ua raws li kev ua tau zoo thiab cov kev lag luam hauv ntug dej hiav txwv ib txwm muaj roj thiab roj, thaum DNV yog European-raws li (Norwegian-German) thiab hais txog kev pheej hmoo-raws li kev tsim, kev daws teeb meem digital, thiab ib puag ncig sustainability.
Lub zog ntawm EQ51 steel yog dab tsi?
Qhov tsawg kawg nkaus yield zog ntawm EQ51 steel (xws li ABS Qib EQ51) yog 500 MPa (megapascals), uas yog sib npaug rau 73 ksi (kilopounds ib square inch).
