S460G1+QT yog lub siab- lub zog offshore qauv steel phaj ntawv pov thawj raws li EN 10225 rau kev ruaj khov offshore qauv, roj thiab roj platforms, thiab cua turbine foundations. Cov lus "+ QT" qhia txog qhov kev xa khoom quenched thiab tempered, uas muab kev sib xyaw ua ke zoo ntawm lub zog siab thiab tawv los ntawm kev kho cua sov. Nws muaj qhov tsawg kawg nkaus yield zog ntawm 460 MPa (rau thickness Tsawg dua los yog sib npaug rau 16 hli) thiab tensile lub zog ntawm 520 mus rau 670 MPa, nrog rau qhov tsawg kawg nkaus elongation ntawm 17%. Qhov siab tshaj plaws phaj thickness yog 100 hli. Cov tshuaj muaj pes tsawg leeg suav nrog cov pa roj carbon tsawg dua lossis sib npaug li 0.14% thiab sulfur Tsawg dua lossis sib npaug li 0.010%. Qib no yog tsim los rau kev xav tau cov khoom siv uas xav tau lub zog siab - mus rau - qhov hnyav piv thiab weldability zoo.
S460G2+QT kuj yog ib qho quenched thiab tempered offshore structural steel ntawv pov thawj raws li EN 10225, sib koom tib yam tsawg kawg nkaus yield zog ntawm 460 MPa thiab tensile zog ntau yam ntawm 520-670 MPa li G1. Txawm li cas los xij, S460G2+QT muaj kev tswj xyuas cov tshuaj lom neeg nruj dua, uas muaj cov tshuaj sulfur tsawg dua los yog sib npaug li 0.007% (piv rau Tsawg dua lossis sib npaug li 0.010% rau G1). Tus lej "G" siab dua (G2 vs. G1) qhia tias yuav tsum nruj dua rau kev coj dawb huv thiab tawv. Zoo li G1, nws raug kuaj xyuas ntawm -40℃nrog lub zog tsawg kawg nkaus ntawm 60 Joules. Qhov siab tshaj plaws phaj thickness kuj yog 100 hli. Cov qib no yog siv dav rau cov ntawv thov tseem ceeb xws li offshore drilling platforms, jack-nce rig ob txhais ceg, thiab marine engineering tej yaam num xav tau lub zog siab tshaj plaws - rau qhov hnyav piv thiab kev ua tau zoo ntawm qhov kub thiab txias.
Ob leeg S460G1+QT thiab S460G2+QT yog EN 10225- tau ntawv pov thawj quenched thiab tempered offshore structural steels nrog zoo tib yam khoom siv (tsawg kawg yield 460 MPa, tensile 520-670 MPa) thiab tej yam yuav tsum tau muaj (6-60 degree). Lawv qhov sib txawv tseem ceeb yog nyob rau hauv cov tshuaj purity: S460G1+QT yog haum rau cov kev siv sab nrauv sab nrauv, thaum S460G2+QT nta cov kev txwv nruj dua ntawm leej faj (tsawg dua lossis sib npaug li 0.007%), muab kev txhim kho qis-kub toughness thiab weldability rau ntau qhov kev xav tau ntawm ntug dej hiav txwv. Ob qib tswj tau zoo heev weldability thiab muaj txog li 100mm thickness.
Cov cuab yeej cuab tam rau S460G1+QT steel phaj:
| Thickness (hli) | ||||||
| S460G1+QT steel phaj | Tsawg dua los yog sib npaug li 16 | >16 Tsawg dua lossis sib npaug li 25 | >25 Tsawg dua los yog sib npaug li 40 | >40 Tsawg dua lossis sib npaug li 63 | >63 Tsawg dua lossis sib npaug li 80 | > 80 |
| Yield zog (Ntau dua lossis sib npaug rau Mpa) | 460 | 440 | 420 | 415 | 405 | 400 |
| Tensile zog (Mpa) | 540-700 | 530-690 | 520-680 | 515-675 | 505-665 | 500-660 |
Cov cuab yeej cuab tam rau S460G2+QT steel phaj:
| Thickness (hli) | ||||||
| S460G2+QT steel phaj | Tsawg dua los yog sib npaug li 16 | >16 Tsawg dua lossis sib npaug li 25 | >25 Tsawg dua los yog sib npaug li 40 | >40 Tsawg dua lossis sib npaug li 63 | >63 Tsawg dua lossis sib npaug li 80 | > 80 |
| Yield zog (Ntau dua lossis sib npaug rau Mpa) | 460 | 440 | 420 | 415 | 405 | 400 |
| Tensile zog (Mpa) | 540-700 | 530-690 | 520-680 | 515-675 | 505-665 | 500-660 |
Tshuaj muaj pes tsawg leeg rau S460G1+QT steel phaj
| Cov ntsiab lus tseem ceeb ntawm S460G1+QT steel phaj | ||||||||
| C | Si | Mn | P | S | Cr | Mo | Nb + V | Nb+V+Ti |
| 0.14 | 0.15-0.55 | 1.65 | 0.020 | 0.010 | 0.25 | 0.25 | 0.09 | 0.11 |
| Ni | Alt | Cu | N | Nb | Ti | V | Cr+Mo+Ni+Cu | |
| 0.70 | 0.015-0.055 | 0.30 | 0.010 | 0.040 | 0.025 | 0.080 | 0.90 | |
Tshuaj muaj pes tsawg leeg rau S460G2+QT steel phaj
| Cov ntsiab lus tseem ceeb ntawm S460G2+QT steel phaj | ||||||||
| C | Si | Mn | P | S | Cr | Mo | Nb + V | Nb+V+Ti |
| 0.14 | 0.15-0.55 | 1.65 | 0.020 | 0.010 | 0.25 | 0.25 | 0.09 | 0.11 |
| Ni | Alt | Cu | N | Nb | Ti | V | Cr+Mo+Ni+Cu | |
| 0.70 | 0.015-0.055 | 0.30 | 0.010 | 0.040 | 0.025 | 0.080 | 0.90 | |
