ABS AQ70 thiab CCS AQ70 yog ob qho tib si ntxiv - siab - lub zog quenched thiab tempered steel daim hlau tshwj xeeb tsim los rau cov kev xav tau tshaj plaws hauv marine thiab offshore engineering daim ntaub ntawv. Lawv tau ntawv pov thawj los ntawm ob lub koom haum kev faib khoom loj-ABS (American Bureau of Shipping) thiab CCS (China Classification Society)- thiab sawv cev rau qib siab tshaj plaws ntawm cov txiaj ntsig muaj zog hauv AQ series rau cov koom haum no.
ABS Qib AQ70 tau ntawv pov thawj los ntawm American Bureau of Shipping. Lub npe "AQ70" qhia qhov tsawg kawg nkaus lub zog ntawm 690 MPa (100 ksi) thiab lub zog tensile ntau ntawm 770-940 MPa (112-136 ksi). Qhov "A" txhais tau hais tias Charpy V-notch cuam tshuam qhov ntsuas kub, uas rau qib no yog 0℃(32℃F) nrog qhov tsawg kawg nkaus lub zog xav tau ntawm 41J (transverse) lossis 62J (ntev). Cov phaj no yog tsim los siv cov txheej txheem quenched thiab tempered (QT) kom ua tiav lawv lub zog tshwj xeeb thiab tawv. Cov ntawv thov muaj xws li offshore drilling rigs, platforms, shipping thawv, thiab tseem ceeb marine qauv ua hauj lwm nyob rau hauv hnyav ib puag ncig.
CCS Qib AQ70 tau lees paub los ntawm Tuam Tshoj Classification Society thiab ua haujlwm ncaj qha rau ABS AQ70 hauv Suav kev faib tawm. Raws li kev faib tawm hauv zej zog cov qauv, CCS AQ70 qhia cov cuab yeej cuab tam zoo ib yam nrog nws cov khoom siv ABS: yam tsawg kawg nkaus lub zog ntawm 690 MPa . Nws belongs rau tib yam khoom tsev neeg xws li AQ43, AQ47, AQ51, AQ56, AQ63, thiab AQ70 series rau nkoj tsim thiab offshore daim ntaub ntawv. Zoo li ABS AQ70, CCS AQ70 xav tau Charpy qhov kev ntsuam xyuas nrog rau qib "A" qhia txog 0℃ntsuas kub.
Qhov txawv tseem ceeb:
Qhov tseem ceeb ntawm qhov sib txawv ntawm ob qib no yog nyob rau hauv lawv daim ntawv pov thawj txoj cai thiab cov kev tswj xyuas zoo. ABS AQ70 ua raws li American Bureau of Shipping cov cai thiab tau lees paub thoob ntiaj teb, tshwj xeeb tshaj yog nyob rau hauv cov haujlwm uas yuav tsum tau muaj ntawv pov thawj ABS rau cov chaw tawm ntug dej hiav txwv thiab cov nkoj uas tau los rau ABS- cov nkoj nkoj. CCS AQ70 ua raws li Tuam Tshoj Classification Society cov cai thiab feem ntau tau teev tseg rau cov qauv sab nrauv tsim hauv Suav nkoj nkoj lossis rau cov haujlwm hauv Suav kev faib tawm. Los ntawm kev pom kev, cov hlau no suav hais tias hloov pauv tau, thiab cov tuam txhab loj tuaj yeem tsim cov ntawv pov thawj los ntawm ob lub zej zog ib txhij.
Tshuaj muaj pes tsawg leeg
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ABS AQ70 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 AQ 70 |
0.21 |
0.55 |
1.7 |
0.035 |
0.035 |
0.02 |
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CCS AQ70 Ntxiv cov tshuaj muaj zog muaj zog hauv Tempering thiab quenching |
| C max | Si max | Mn | P max | S max | N max. |
|
0.21 |
0.55 | 1.70 |
0.030 |
0.030 |
0.020 |
Mechanical Property
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ABS AQ70 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% |
0 |
J |
J |
|
|
ABS AQ 70 |
690 |
770-940 |
14 |
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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CCS AQ70 Ntxiv cov khoom muaj zog ntxiv hauv tempering thiab quenching
| Yield zog (MPa) min. | Tensile zog (MPa) | Elongation min. % |
| 690 | 770-940 | 14 |
