ABS DQ51 yog ib qho ntxiv - siab - lub zog marine steel phaj ntawv pov thawj los ntawm American Bureau of Shipping (ABS), ua los ntawm quenching thiab tempering (Q&T). Qib "D" txhais tau hais tias nws raug kuaj ntawm -20 degree. Nws muaj qhov tsawg kawg nkaus lub zog ntawm 500 MPa thiab tensile lub zog ntawm 610 txog 770 MPa, nrog rau qhov tsawg kawg nkaus elongation ntawm 16%. Kev cuam tshuam lub zog yuav tsum muaj tsawg kawg yog 50J (ntev) lossis 33J (transverse) ntawm -20 degree. Qib no yog dav siv nyob rau hauv offshore drilling platforms, shipbuilding, thiab marine lug xav tau siab zog thiab toughness.
ABS DQ63 yog ib qho ultra- siab- lub zog marine steel phaj kuj tau ntawv pov thawj los ntawm ABS, ua los ntawm quenching thiab tempering (Q&T). Lub "63" qhia txog qhov tsawg kawg nkaus lub zog ntawm 620 MPa thiab lub zog tensile xws li ntawm 720 txog 890 MPa, nrog qhov tsawg kawg nkaus elongation ntawm 15-17%. Kev ntsuam xyuas cuam tshuam yog ua ntawm -20 degree, nrog rau qhov tsawg kawg nkaus lub zog ntawm 62J (ntev) lossis 41J (transverse). Qib no yog tsim los rau cov txheej txheem tseem ceeb hauv ntug dej hiav txwv, suav nrog cov phiaj xwm drilling thiab cov haujlwm ua haujlwm hauv dej hiav txwv.
ABS DQ51 thiab ABS DQ63 yog ABS- ntawv pov thawj, quenched thiab tempered ultra- siab- lub zog marine steels nrog zoo toughness sim ntawm -20 degree, kom ntseeg tau tias kev ua tau zoo nyob rau hauv hnyav marine ib puag ncig. Lawv qhov sib txawv tseem ceeb nyob rau hauv lub zog theem: DQ51 muaj qhov tsawg kawg nkaus lub zog ntawm 500 MPa nrog tensile zog ntawm 610-770 MPa, haum rau siab -lub zog offshore platforms thiab shipbuilding, thaum DQ63 muab ib tug ntau dua yield zog tsawg kawg nkaus ntawm 620 MPa {10} 620 MPa { MPa, tsim los rau qhov xav tau tshaj plaws load-bearing daim ntaub ntawv uas yuav tsum tau ntau tshaj lub zog-rau-hnyav piv. Ob qib tswj tau zoo weldability thiab yog qhov tseem ceeb rau kev siv cov txheej txheem marine tseem ceeb.
Tshuaj muaj pes tsawg leeg
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ABS DQ51 Ntxiv muaj zog muaj zog tshuaj muaj nyob rau hauv Tempering thiab quenching |
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Qib |
Cov ntsiab lus Max (%) |
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C |
Si |
Mn |
P |
S |
N |
|
|
ABS DQ51 |
0.20 |
0.55 |
1.7 |
0.030 |
0.030 |
0.02 |
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ABS DQ63 Ntxiv muaj zog muaj zog tshuaj muaj nyob rau hauv Tempering thiab quenching |
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Qib |
Cov ntsiab lus Max (%) |
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|
C |
Si |
Mn |
P |
S |
N |
|
|
ABS DQ63 |
0.20 |
0.55 |
1.7 |
0.030 |
0.030 |
0.02 |
Mechanical Property
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ABS DQ51 Ntxiv cov khoom muaj zog ntxiv hauv tempering thiab quenching |
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Qib |
Mechanical Property |
Charpy V Impact Test |
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Yield |
Tensile |
Elongation |
Qib |
Zog 1 |
Zog 2 |
|
|
Min Mpa |
Mpa |
Tsawg% |
-20 |
J |
J |
|
|
ABS DQ51 |
500 |
610-770 |
16 |
33 |
50 |
|
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Lus Cim: Lub Zog 1 yog qhov kev ntsuas cuam tshuam, Lub Zog 2 yog qhov ntev |
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ABS DQ63Ntau lub zog muaj zog ntxiv hauv tempering thiab quenching |
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Qib |
Mechanical Property |
Charpy V Impact Test |
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Yield |
Tensile |
Elongation |
Qib |
Zog 1 |
Zog 2 |
|
|
Min Mpa |
Mpa |
Tsawg% |
-20 |
J |
J |
|
|
ABS DQ63 |
620 |
720-890 |
15 |
41 |
62 |
|
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Lus Cim: Lub Zog 1 yog qhov kev ntsuas cuam tshuam, Lub Zog 2 yog qhov ntev |
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