ABS EQ70 Steel Phaj yog dab tsi?
ABS EQ70 yog ib qho ultra- siab- lub zog marine steel pom zoo los ntawm ABS (American Bureau of Shipping). ABS tau txais kev sib koom ua ke qib coding system rau siab - lub zog steel nrog cov khoom muaj zog tshaj 690 MPa:
- Q txhais tau hais tias lub siab - muaj zog series; Tsab ntawv ua ntej qhia txog qhov ntsuas qhov ntsuas kub: AQ70 (0 degree), DQ70 (-20 degree), EQ70 (-40 degree), FQ70 (-60 degree);
- Tus naj npawb 70 sib raug rau lub zog tawm ntawm 70 ksi, kwv yees li 690 MPa thaum hloov mus rau metric units, piv rau qib zog ntawm DNV E690.
Peb muab ABS EQ70 nyob rau hauv ob qho kev xa khoom: cov qauv steel phaj thiab lamellar tearing resistant (Z-cov khoom taw qhia) steel daim hlau (Z15/Z25/Z35). Rau cov phaj tuab siv rau cov txheej txheem welded tseem ceeb, kev tswj nruj dua yog raug rau cov ntsiab lus ntawm sulfur thiab phosphorus impurity. Cov qib steel no tau siv dav hauv Asmeskas -txoj haujlwm offshore, FPSO (Floating Production Storage and Offloading) modules thiab jack-up platform leg fabrication.
DNV E690 Steel Phaj yog dab tsi?
DNV E690 yog lub siab - lub zog hull cov qauv hlau tau lees paub los ntawm DNV GL (lub koom haum sib koom ua ke ntawm Det Norske Veritas thiab Germanischer Lloyd). Lub ntsiab lus ntawm qib ua raws li DNV txoj cai kev faib tawm rau qib kub ntawm marine steel:
- Tsab ntawv E: Yuav tsum tau Charpy V- ntsuas qhov cuam tshuam ntawm -40℃;
- Tus lej 690: Qhia tawm qhov tsawg kawg nkaus lub zog ntawm 690 MPa.
Cov qib steel no feem ntau yog tsim los ntawm quenched - thiab - tempered (QT) txheej txheem ua ke nrog nplej - refined microalloying tsim kom sib npaug ultra- siab zog thiab qis - kub toughness. Nws yog tsim tshwj xeeb rau Arctic - mus rau nkoj, thauj khoom -cov qauv ntawm cov ntug dej hiav txwv thiab cov khoom ntawm cov khoom hnyav- cov dej num offshore cranes. Tag nrho cov hlau phaj tiav yuav raug kuaj xyuas DNV zeb, thiab cov ntaub ntawv pov thawj kev faib tawm hauv zej zog yuav raug muab rau kev xa khoom xa tuaj.
Yog tias koj tab tom npaj kev sib tw rau cov phiaj xwm offshore platform, Arctic nkoj kev tsim kho lossis offshore crane cov haujlwm thiab xav tias tsis paub meej txog kev xaiv qib steel, ua siab zoo xa koj qhov project kos duab, kev faib tawm hauv zej zog cov kev xav tau thiab cov phaj tuab daim ntawv teev npe rau peb pab pawg engineering. Peb cov kws tshaj lij yuav xa cov lus pom zoo xaiv qib steel dawb thiab tus nqi - kho kom zoo dua hauv 4 teev.
ABS EQ70 DNV E690 High Strength Marine Steel Phaj Specification
| Yam khoom | Specification |
|---|---|
| Khoom npe | High Strength Marine Steel Phaj |
| Muaj Qib | ABS EQ70, DNV E690 |
| Classification Standards | ABS Cov Cai, DNV Cov Cai |
| Qeb Hlau | Quenched thiab Tempered High Strength Shipbuilding Steel |
| Thickness | 6-250 hli (Customized muaj) |
| Dav | 1500-4000 hli |
| Ntev | 3000-18000 hli |
| Lub xeev xa khoom | Quenched thiab Tempered |
| Kev kho cua sov | Quenching + Tempering |
| Kev sim | Tshuaj ntsuam xyuas, Tensile Test, Charpy Impact Test, Hardness Test, Ultrasonic Test (yeem) |
| Kev kho saum npoo | Txhaj tshuaj tiv thaiv, primer txheej (yeem) |
| Txiav Service | CNC txiav, nplaim txiav, Plasma txiav |
| Daim ntawv thov | Thawv Nkoj, Cov Thauj Khoom Loj, Offshore Platforms, Marine Structures, Hnyav -Cov Nkoj Ua Haujlwm |
ABS EQ70 vs DNV E690 Steel Phaj Chemical Composition
| Element | DNV E690 General Phaj | ABS EQ70 Pas Pas | ABS EQ70 Z-kev taw qhia phaj |
|---|---|---|---|
| C | Tsawg dua los yog sib npaug li 0.20 | Tsawg dua los yog sib npaug li 0.20 | Tsawg dua lossis sib npaug li 0.18 |
| Si | 0.10–0.55 | 0.10–0.55 | 0.10–0.50 |
| Mn | Tsawg dua lossis sib npaug li 1.70 | Tsawg dua lossis sib npaug li 1.70 | Tsawg dua lossis sib npaug li 1.65 |
| P | Tsawg dua lossis sib npaug li 0.030 | Tsawg dua lossis sib npaug li 0.030 | Tsawg dua lossis sib npaug li 0.020 |
| S | Tsawg dua lossis sib npaug li 0.030 | Tsawg dua lossis sib npaug li 0.030 | Tsawg dua lossis sib npaug li 0.010 |
| Als (Acid{0}} soluble Al) | 0.015–0.080 | 0.015–0.080 | 0.020–0.080 |
| Nb | 0.02–0.05 | 0.02–0.05 | 0.02–0.05 |
| V | 0.04–0.10 | 0.04–0.10 | 0.04–0.10 |
| Ti | Tsawg dua lossis sib npaug li 0.02 | Tsawg dua lossis sib npaug li 0.02 | Tsawg dua lossis sib npaug li 0.02 |
| B | Tsawg dua los yog sib npaug li 0.005 | Tsawg dua los yog sib npaug li 0.005 | Tsawg dua los yog sib npaug li 0.005 |
Qhov txawv tseem ceeb: ABS EQ70 Z- kev taw qhia cov phaj phaj tseem ceeb txwv P thiab S cov ntsiab lus txhawm rau txhawm rau lamellar tearing thaum lub phaj tuab vuam; DNV E690 muaj kev sib koom ua ke impurity Performance index rau cov pa thiab Z- hom phaj yam tsis muaj kev txwv nruj.
ABS EQ70 vs DNV E690 Hlau Phaj Mechanical Property
| Performance Index | DNV E690 | ABS EQ 70 | Test Standard |
|---|---|---|---|
| Yield zog (Re) | Ntau dua lossis sib npaug li 690 MPa | Ntau dua lossis sib npaug li 690 MPa | DNV Txoj Cai / ABS Txoj Cai |
| Tensile zog (Rm) | 770-940 MPa | 770-940 MPa | Tensile xeem |
| Elongation (A) | Ntau dua lossis sib npaug li 14% | Ntau dua lossis sib npaug li 14% | Chav kub tensile |
| Charpy Impact (-40 degree, Ntev) | Ntau dua lossis sib npaug rau 69 J | Ntau dua lossis sib npaug li 62 J | Charpy V-ntu |
| Charpy Impact (-40 degree, Transverse) | Ntau dua lossis sib npaug li 46 J | Ntau dua lossis sib npaug li 41 J | Charpy V-ntu |
| Z15 txo ntawm cheeb tsam | Ntau dua lossis sib npaug li 15% | Ntau dua lossis sib npaug li 15% | Z-kev taw qhia tensile |
| Z25 txo ntawm cheeb tsam | Ntau dua lossis sib npaug li 25% | Ntau dua lossis sib npaug li 25% | Z-kev taw qhia tensile |
| Z35 txo ntawm cheeb tsam | Ntau dua lossis sib npaug li 35% | Ntau dua lossis sib npaug li 35% | Z-kev taw qhia tensile |
Qhov sib txawv ntawm cov tub ntxhais kawm: DNV E690 teeb tsa qhov tsawg dua qhov cuam tshuam lub zog lees txais tus nqi ntawm -40 degree, kev soj ntsuam nruj dua, tsim nyog rau qhov kub thiab txias ntawm Arctic ua haujlwm.
Kev sib piv kev ntsuas ntawm qis-Temperature Toughness: ABS EQ70 vs DNV E690 Phaj
Kev sib raug zoo ntawm Kev Ntsuas Kub
Ob qib steel txais yuav -40℃raws li daim ntawv pov thawj Charpy cuam tshuam qhov kub thiab txias rau Qib E / EQ, ua kom muaj kev pabcuam txhim khu kev qha nyob rau lub caij ntuj no marine ib puag ncig ntawm North Tuam Tshoj Hiav Txwv, North Atlantic Dej hiav txwv thiab marginal Arctic dej. Ntxiv mus, ob qib muaj rau kev hloov kho rau Qib F (-60 degree) specification.
01
Margin ntawm Impact Energy
DNV E690 nta kwv yees li 10% siab dua qhov tsawg kawg nkaus longitudinal thiab transverse cuam tshuam lub zog pib piv nrog ABS EQ70. Raws li cov phaj tuab thiab cov cua sov zoo ib yam - thaj tsam cuam tshuam (HAZ) cov xwm txheej tom qab vuam, E690 muab kev tiv thaiv zoo rau cov pob txha tawg nyob rau hauv qis - qhov kub thiab txias cuam tshuam kev thauj khoom.
02
Brittle Transition Temperature
Lub ductile- qhov hloov pauv kub ntawm DNV E690 yog kwv yees li 3-5℃qis dua li ntawm ABS EQ70, ua rau muaj kev txhim kho tawg tsis kam nyob rau hauv cyclic low- kub loads ua rau cov dej khov siv cov qauv ntawm lub nkoj hulls.
03
Degradation yam ntxwv ntawm tuab-Plate Mechanical Properties
Thaum phaj tuab tshaj 100 hli, ABS EQ70 raug kev puas tsuaj sai dua ntawm qis-kub toughness dua DNV E690. Raws li, DNV E690 tuav cov txiaj ntsig tseem ceeb rau ntxiv - hnyav hnyav - cov kabmob steel phaj nrog tuab tshaj 100 hli.
04
ABS EQ70 vs DNV E690 High Strength Phaj Weldability
Zoo sib xws hauv Vuam Cov yam ntxwv
Ob qib yog quenched - thiab - tempered (QT) ultra- siab - lub zog steels featuring siab carbon sib npaug thiab txias cracking susceptibility Performance index (Pcm). Rau cov phaj tuab, preheating ua ntej vuam, interpass kub tswj thiab tom qab-weld heat treatment (PWHT) yog qhov yuav tsum tau ua:
- Pom zoo preheating kub: 120-180℃rau phaj thickness tshaj 25 hli;
- Interpass kub yuav tsum tswj nyob rau hauv 150-200 degree;
- Tom qab-weld stress relief annealing: Soaking at 550–620 degree, with a soaking duration of 1–2 hours per 25 mm of plate thickness.
Cov txheej txheem vuam ntau: SMAW (Shielded Hlau Arc Vuam), GMAW (Gas Metal Arc Vuam), FCAW (Flux-Cored Arc Vuam), thiab SAW (Submerged Arc Vuam) rau longitudinal butt splicing ntawm hull daim hlau.
Qhov sib txawv ntawm Vuam Kev Ua Haujlwm
1. Toughness Stability ntawm Thaum tshav kub kub-Teb chaws cuam tshuam (HAZ)
DNV E690 steel txais cov qoob loo paub tab- ua kom zoo dua microalloying thev naus laus zis, ua rau muaj kev cuam tshuam tsis zoo ntawm cov vuam cua sov- thaj tsam cuam tshuam thiab ntau dua tus nqi rau kev tshaj tawm -weld Charpy cuam tshuam cov kev xeem.
2. Z-Kev taw qhia vuam Adaptability
ABS EQ70 steel nrog tsawg leej faj (S) thiab tsis tshua muaj phosphorus (P) muaj pes tsawg leeg muab cov txiaj ntsig zoo rau kev nkag mus rau tag nrho cov vuam ntawm T- cov pob qij txha, uas tuaj yeem tiv thaiv lamellar tearing ntawm lub hauv paus weld.
3. Certified Welding Procedure Specification (WPS)
Cov phiaj xwm raws li kev faib tawm DNV yuav tsum tau txais DNV- pom zoo WPS rau E690 steel; Cov hlab ntsha uas cais los ntawm ABS yuav tsum siv ABS- cov txheej txheem vuam cov ntawv pov thawj rau EQ70 steel. Hla - qib kev thov ntawm WPS yuav tsum tau rov ua dua -kev ua cov txheej txheem vuam tsim nyog.
Daim ntawv thov raug: ABS EQ70 vs DNV E690 Marine Steel Phaj
Kev siv tseem ceeb ntawm ABS EQ70
- Load-cov qauv kev txhawb nqa rau ABS- chav kawm FPSO (Floating Production Storage thiab Offloading units)
- Cantilever beams thiab jacking mechanisms ntawm American -standard jack- mus rau offshore platforms
- Offshore modules xa tawm mus rau North America thiab South America
- tuab- phaj welded qauv yuav tsum tau lamellar tearing tsis kam (customizable Z-qib: Z15/Z25/Z35)
Cov ntawv thov tseem ceeb ntawm DNV E690
- Ice siv sab nrauv hull plating thiab dej khov -cov tswv cuab ntawm cov dej khov hauv Arctic
- Cov phaj tseem ceeb rau DNV-chaw offshore drilling platforms thiab jack- nce rigs
- Thawj qhov load-cov kabmob girders thiab boom structural phaj ntawm hnyav- nqa crane nkoj
- Cov txheej txheem tseem ceeb ntawm cov hlau rau sab ntug dej hiav txwv cua ntsawj ntshab uas muaj los ntawm European shipowners
Cov txheej txheem xaiv cov khoom: ABS EQ70 vs DNV E690
Thaum xaiv ABS EQ70
✅ Txoj haujlwm yuav tsum muaj daim ntawv pov thawj ABS kev faib tawm hauv zej zog;
✅ Nthuav tuab - phaj puv nkag welded qauv xav tau Z- kev taw qhia tsim kua muag;
✅ Kev xa khoom xa mus rau cov lag luam tawm sab nraud xws li Tebchaws Meskas, Brazil thiab Mexico;
✅ Kev tswj hwm tus nqi yuav tsum tau ua thaum theem pib qis - qhov kub thiab txias yuav tsum tau txaus siab.
Thaum twg los xaiv DNV E690
✅ Lub nkoj lossis ntug hiav txwv yuav tsum muaj ntawv pov thawj los ntawm DNV GL;
✅ Ntev -kev pabcuam nyob rau hauv qhov kub thiab txias hauv qab -30℃lossis Arctic shipping txoj kev;
✅ Ntxiv-tuab siab- lub zog thauj khoom-cov kabmob cov tswv cuab nrog phaj tuab tshaj 100 hli;
✅ Cov npoo siab yuav tsum tau rau lub hauv paus hlau qis -kub Charpy cuam tshuam toughness.
Hloov Txoj Cai
Rau cov cuab yeej siv tshuab tsis muaj kev faib tawm hauv zej zog daim ntawv pov thawj, DNV E690 thiab ABS EQ70 tuaj yeem hloov pauv tau los ntawm cov khoom sib xws. Rau cov phiaj xwm kev tsim nkoj uas suav nrog hla- ntawv pov thawj hauv chav kawm, kev pom zoo raug cai los ntawm cov koom haum muaj feem cuam tshuam yuav tsum tau txais ua ntej kev hloov khoom siv.
Kev Pabcuam ntawm GNEE Steel
Raws li tus kws tshaj lij marine siab- lub zog steel xa khoom nrog 18 xyoo ntawm kev xa tawm, GNEE Steel muab ib qho - nres kev pabcuam rau DNV E690 thiab ABS EQ70 steel daim hlau los daws qhov mob cov ntsiab lus ntawm marine engineering procurement:
Diversified Khoom Customization
Muab cov pa kub dov phaj, Z-kev taw qhia los tiv thaiv- kua muag phaj (Z15/Z25/Z35), ultra- phaj tuab (6-300mm), tsau- loj txiav phaj; muab TMCP thiab QT ob lub xeev xa khoom raws li cov neeg siv khoom xav tau.
Deep Processing Service
Phaj nplaim taws txiav, plasma txiav, CNC blanking, ntug chamfering, tua blasting + marine anti- xeb primer txheej ua kom paub lub Hoobkas ncaj qha xa cov khoom tiav.
Spot & Customized Rolling Delivery
Cov lus nug loj ntawm cov lus qhia tshwj xeeb E690 thiab EQ70 steel rau kev txiav txim sai sai hauv 7 hnub ua haujlwm; customized tshwj xeeb thickness, dav, ntev steel phaj dov nrog ruaj khov lub voj voog ntawm 30-45 hnub.
Cov neeg siv khoom tshiab txaus siab rau 3% luv nqi rau thawj qhov kev txiav txim siab marine siab - lub zog steel daim hlau, dawb CNC txiav cov qauv kev pabcuam rau kev kuaj xyuas ua ntej kev txiav txim ntau, hu rau peb tus neeg muag khoom txawv teb chaws tam sim no txhawm rau txhawm rau cov khoom muag thiab cov nqi zoo.
FAQ
ABS EQ70 thiab DNV E690 puas tuaj yeem siv sib hloov ntawm cov nkoj?
Yog lawm, ABS EQ70 thiab DNV E690 yog cov txheej txheem sib npaug sib npaug ntxiv - qib siab ntawm cov qauv steel, tab sis lawv tsis tuaj yeem hloov pauv yam tsis muaj kev pom zoo hauv chav kawm. Ob leeg sib koom qhov tsawg kawg nkaus lub zog ntawm 690 MPa thiab zoo tib yam qis- ntsuas qhov ntsuas qhov ntsuas kub ntawm -40℃(qhia los ntawm 'E' hauv DNV thiab 'EQ' hauv ABS).
Qhov txawv ntawm EQ70 F qib thiab E qib yog dab tsi?
Qhov txawv ntawm EQ70 (Qib E) thiab F qib (FQ70) marine structural steel yog nruj me ntsis rau lawv Charpy V-notch cuam tshuam qhov ntsuas kub, nrog Qib E kuaj ntawm -40℃thiab Qib F kuaj ntawm -60℃. Ob leeg sib koom tib yam tsawg kawg nkaus lub zog ntawm 690 MPa (100 ksi) thiab yog quenched thiab tempered high-strength steels siv rau offshore platforms thiab shipbuilding.
Puas yog DNV E690 txhawb Z-kev taw qhia lamellar tearing resistant customization?
Yog lawm, DNV E690 (ib qho siab ntxiv - lub zog ntxiv - siab - tawm cov qauv hlau siv hauv nkoj tsim thiab tawm ntug dej hiav txwv platforms) txhawb nqa Z-kev taw qhia lamellar tearing- resistant customization.
Puas yog DNV E690 steel thiab ABS EQ70 steel haum rau kev tsim kho sab nraum zoov hauv lub caij ntuj no?
Yog lawm, ob qho tib si DNV E690 steel thiab ABS EQ70 steel yog qhov tsim nyog rau kev tsim kho sab nraum zoov hauv cheeb tsam txias thaum lub caij ntuj no, vim tias ob qho tib si nqa qib "E" lub ntsiab lus lawv Charpy V-notch cuam tshuam toughness tau raug lees paub los ntawm -40℃thiab ob qho tib si muaj qhov muaj zog tsawg kawg nkaus ntawm 690 MPa.
