Kev lag luam marine niaj hnub xav tau cov ntaub ntawv uas yog ob qho tib si ruaj khov thiab txhim khu kev qha, muaj peev xwm ua kom muaj zog ntawm cov dej hiav txwv hnyav tshaj plaws. Ntawm cov kev xaiv rau cov ntawv thov no yog DNV F460 marine steel daim hlau, uas muaj npe nrov rau lawv cov tshuaj lom neeg zoo heev, cov khoom siv kho tshuab, thiab cov yam ntxwv kho cua sov.
quenching thiab tempering shipbuilding steel phaj DNV F460 yog ib qib siab dua steel ntawm shipbuilding steel. Thaum tshav kub kub kev kho mob cim yuav tshwm sim raws li QT ntawm peb cov hlau phaj raws li steel mark.Qhov kub tsis tshua muaj kev cuam tshuam rau cov kev kub siab ntxiv steel phaj yuav tsum nyob rau hauv minus 60 centigrade.
Tshuaj muaj pes tsawg leeg
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DNV F460 ntxiv muaj zog Chemical Composition |
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|
Qib |
Cov ntsiab lus Max (%) |
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|
C |
Si |
Mn |
P |
S |
Al |
N |
|
|
DNV F460 |
0.18 |
0.10-0.55 |
1.6 |
0.025 |
0.025 |
0.015-0.08 |
0.020 |
|
Nb |
V |
Ti |
Cu |
B |
Ni |
Mo |
|
|
0.02-0.05 |
0.04-0.10 |
0.02 |
|
0.005 |
|
|
|
Mechanical Property
|
DNV F460 ntxiv cov khoom muaj zog dav dav |
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|
Qib |
|
Mechanical Property |
Charpy V Impact Test |
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|
Thickness |
Yield |
Tensile |
Elongation |
Qib |
Zog 1 |
Zog 2 |
|
|
DNV F460 |
mm |
Min Mpa |
Mpa |
Tsawg% |
-60 |
J |
J |
|
t Tsawg dua lossis sib npaug li 50 |
460 |
570-720 |
17% |
31 |
46 |
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|
50＜t Tsawg dua lossis sib npaug rau 70 |
460 |
570-720 |
17% |
31 |
46 |
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|
70＜t Tsawg dua lossis sib npaug rau 150 |
460 |
570-720 |
17% |
31 |
46 |
||
|
Lus Cim: Lub Zog 1 yog qhov kev cuam tshuam cuam tshuam, Lub Zog 2 yog qhov ntev |
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