RINA E460 yog ib qho ntxiv -siab- lub zog marine steel phaj ntawv pov thawj los ntawm Italian faib pawg neeg RINA (Registro Italiano Navale) rau kev tsim nkoj thiab kev siv sab nrauv. Qib "E" txhais tau hais tias nws raug kuaj xyuas ntawm -40 degree, kom ntseeg tau zoo heev rau cov hlab ntsha ua haujlwm hauv qhov chaw txias heev xws li dej Arctic. Nws muaj qhov tsawg kawg nkaus lub zog ntawm 460 MPa thiab tensile lub zog ntawm 570 mus rau 720 MPa, nrog rau qhov tsawg kawg nkaus elongation ntawm 17% rau thicknesses txog 260 hli. Kev cuam tshuam lub zog yuav tsum muaj tsawg kawg yog 31J ntawm -40 degree. Cov tshuaj muaj pes tsawg leeg yog tswj nruj me ntsis nrog cov pa roj carbon tsawg dua lossis sib npaug li 0.20% thiab manganese Tsawg dua lossis sib npaug li 1.70%. Qib no yog siv dav rau cov qauv hull, offshore drilling platforms, thiab FPSO cov nkoj.
RINA E500 yog ib qho ultra- siab- lub zog marine steel phaj kuj tau ntawv pov thawj los ntawm RINA, nrog rau kev cuam tshuam toughness kuaj ntawm -40℃yuav tsum muaj yam tsawg kawg nkaus ntawm 33J . Lub "500" qhia txog qhov tsawg kawg nkaus lub zog ntawm 500 MPa thiab lub zog tensile xws li 610 txog 770 MPa, nrog qhov tsawg kawg nkaus elongation ntawm 16% rau thicknesses txog 260mm. Cov tshuaj muaj pes tsawg leeg zoo ib yam li E460 nrog cov pa roj carbon tsawg dua lossis sib npaug li 0.20% thiab manganese Tsawg dua lossis sib npaug li 1.70%, thiab tuaj yeem suav nrog microalloying cov ntsiab lus xws li Nb thiab V rau cov khoom txhim kho. Qib no yog tsim los rau kev xav tau cov khoom siv hauv kev tsim khoom hauv nkoj, offshore platforms, thiab Arctic -cov nkoj uas xav tau lub zog zoo tshaj - rau qhov hnyav piv .
Ob leeg RINA E460 thiab RINA E500 yog RINA- ntawv pov thawj ntxiv - siab - lub zog marine steels nrog zoo heev qis- kub toughness kuaj ntawm -40 degree, kom ntseeg tau tias kev ua tau zoo nyob rau hauv hnyav marine ib puag ncig nrog rau Arctic tej yam kev mob. Lawv qhov sib txawv tseem ceeb nyob hauv qib siab: E460 muaj qhov tsawg kawg nkaus lub zog ntawm 460 MPa nrog lub zog tensile ntawm 570-720 MPa, haum rau siab - lub zog offshore platforms thiab kev tsim nkoj dav dav, thaum E500 muab qhov muaj zog ntau dua MPa lub zog ntawm tensile ncav cuag 500 610-770 MPa, tsim los rau kev thov ntau dua load-bearing daim ntaub ntawv uas yuav tsum tau superior zog-rau-hnyav piv. Ob qib tshwj xeeb tswj cov tshuaj muaj pes tsawg leeg nrog cov pa roj carbon tsawg dua lossis sib npaug li 0.20% thiab tswj cov weldability zoo rau cov kev pabcuam marine tseem ceeb, nrog E500 feem ntau yuav tsum tau ua tiav ntau dua kom ua tiav nws cov khoom siv kho kom zoo. Kev xaiv ntawm lawv nyob ntawm seb qhov project yuav tsum muaj lub zog sib npaug ntawm E460 lossis qhov kev ua tau zoo ntawm E500 rau kev xav tau ntau tshaj plaws.
RINA E460 ntxiv muaj zog tshuaj lom neeg muaj pes tsawg leeg hauv Tempering thiab quenching
|
Lub ntsiab |
RINA E460 Max % |
Lub ntsiab |
RINA E460 Max % |
|
C |
0.20 |
Ni |
0.40 |
|
Mn |
1.70 |
Mo |
0.08 |
|
Si |
0.10-0.55 |
Al |
0.020 min |
|
S |
0.030 |
Nb |
0.20-0.05 |
|
P |
0.030 |
V |
0.05-0.10 |
|
Cu |
0.35 |
Ti |
0.0007-0.05 |
|
Cr |
0.20 |
N |
|
RINA E500 ntxiv muaj zog Chemical Composition nyob rau hauv Tempering thiab quenching
|
Lub ntsiab |
RINAE 500 Max % |
Lub ntsiab |
RINAE 500 Max % |
|
C |
0.20 |
Ni |
0.40 |
|
Mn |
1.70 |
Mo |
0.08 |
|
Si |
0.10-0.55 |
Al |
0.020 min |
|
S |
0.030 |
Nb |
0.20-0.05 |
|
P |
0.030 |
V |
0.05-0.10 |
|
Cu |
0.35 |
Ti |
0.0007-0.05 |
|
Cr |
0.20 |
N |
|
RINA E460 ntxiv lub zog muaj zog hauv Tempering thiab Quenching
|
Qib |
Thickness |
Yield zog |
Tensile zog |
Elongation |
Impact Zog |
|
(mm) |
MPa (min) |
MPa |
% (min) |
(KV J) (min) |
|
|
|
|
|
|
-40 degree |
|
|
NRHA 460 |
8-260 |
460 |
570-720 |
17 |
31J |
RINA E500 ntxiv lub zog muaj zog hauv Tempering thiab Quenching
|
Qib |
Thickness |
Yield zog |
Tensile zog |
Elongation |
Impact Zog |
|
(mm) |
MPa (min) |
MPa |
% (min) |
(KV J) (min) |
|
|
|
|
|
|
-40 degree |
|
|
RINA E500 |
8-260 |
500 |
610-770 |
16 |
33J |
