ABS FQ63 yog ib qho ultra-siab- lub zog marine steel phaj ntawv pov thawj los ntawm American Bureau of Shipping (ABS) rau kev thov rau kev thov sab nrauv thiab kev tsim nkoj. Lub npe "FQ" qhia tau hais tias nws yog quenched thiab tempered steel nrog kev cuam tshuam toughness kuaj ntawm qhov kub tsis tshua muaj siab ntawm -60 degree, kom ntseeg tau qhov kev ua tau zoo tshwj xeeb hauv cov polar thiab Arctic ib puag ncig. Nws muaj qhov tsawg kawg nkaus lub zog ntawm 620 MPa thiab lub zog tensile ntau ntawm 720-890 MPa, nrog qhov tsawg kawg nkaus elongation ntawm 15%. Cov qib no muaj qhov zoo tshaj plaws weldability thiab qis- qhov kub thiab txias tsis kam, ua rau nws zoo tagnrho rau offshore drilling platforms, ultra- cov nkoj loj, thiab cov txheej txheem marine tseem ceeb uas yuav tsum tau muaj lub zog siab tshaj plaws rau qhov hnyav.
ABS FQ70 yog ib qho ultra- siab- lub zog marine steel phaj kuj tau lees paub los ntawm ABS, tsim los ntawm cov txheej txheem quenching thiab tempering. Zoo li FQ63, nws raug kuaj xyuas ntawm -60 degree, nrog rau qhov tsawg kawg nkaus kev xav tau ntawm lub zog ntawm 41J (transverse) thiab 62J (ntev). Lub "70" qhia txog qhov tsawg kawg nkaus lub zog ntawm 690 MPa thiab lub zog tensile ntau ntawm 770-940 MPa, nrog qhov tsawg kawg nkaus elongation ntawm 14%. Nws cov tshuaj muaj pes tsawg leeg yog nruj me ntsis tswj nrog carbon Tsawg dua los yog sib npaug rau 0.18% thiab manganese Tsawg dua los yog sib npaug rau 1.60%. Qib no yog tsim los rau cov kev xav tau tshaj plaws ntawm cov khoom siv thauj khoom-cov kabmob, suav nrog tus kheej- txhawb nqa qhov drilling platforms, jack-up rig ob txhais ceg, thiab cov khoom siv hluav taws kub-resistant qhov chaw uas muaj kev ncaj ncees thaum raug hluav taws kub yog qhov tseem ceeb.
Ob lub ABS FQ63 thiab ABS FQ70 yog ABS- ntawv pov thawj quenched thiab tempered marine steels nrog tshwj xeeb qis - kub toughness kuaj ntawm -60 degree, kom ntseeg tau tias kev ua tau zoo nyob rau hauv lub feem ntau huab Arctic thiab hnyav marine ib puag ncig. Lawv qhov sib txawv tseem ceeb nyob hauv qib siab: FQ63 muaj qhov tsawg kawg nkaus lub zog ntawm 620 MPa nrog lub zog tensile ntawm 720-890 MPa, thaum FQ70 muab qhov muaj zog ntau dua qhov tsawg kawg nkaus ntawm 690 MPa nrog lub zog tensile ncav cuag 770-940 MPa. Ob qib tshwj xeeb tswj cov tshuaj muaj pes tsawg leeg (cov pa roj carbon tsawg dua lossis sib npaug li 0.18%) thiab tswj cov weldability zoo rau kev pabcuam marine tseem ceeb. Kev xaiv ntawm lawv nyob ntawm seb qhov project xav tau lub zog siab ntawm FQ63 lossis qhov ua tau zoo tshaj ntawm FQ70 rau kev xav tau ntau dua, nrog rau cov ntawv siv hluav taws xob.
Tshuaj muaj pes tsawg leeg
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ABS FQ63 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 FQ63 |
0.18 |
0.55 |
1.60 |
0.025 |
0.025 |
0.02 |
|
ABS FQ70 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 FQ 70 |
0.18 |
0.55 |
1.60 |
0.025 |
0.025 |
0.02 |
Mechanical Property
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ABS FQ63 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% |
-60 |
J |
J |
|
|
ABS FQ63 |
620 |
720-890 |
15 |
41 |
62 |
|
|
Lus Cim: Lub Zog 1 yog qhov kev ntsuas cuam tshuam, Lub Zog 2 yog qhov ntev |
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|
ABS FQ70 Ntxiv cov khoom muaj zog ntxiv hauv tempering thiab quenching |
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|
Qib |
Mechanical Property |
Charpy V Impact Test |
||||
|
Yield |
Tensile |
Elongation |
Qib |
Zog 1 |
Zog 2 |
|
|
Min Mpa |
Mpa |
Tsawg% |
-60 |
J |
J |
|
|
ABS FQ 70 |
690 |
770-940 |
14 |
41 |
62 |
|
|
Lus Cim: Lub Zog 1 yog qhov kev ntsuas cuam tshuam, Lub Zog 2 yog qhov ntev |
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