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Offshore Floating Storage Vessel (FPSO) yog ib qho kev cog qoob loo offshore ua ke nrog kev cia, kev sib cais thiab kev thauj mus los ntawm cov khoom siv roj av. Cov roj Crude ua los ntawm cov dej hauv qab hiav txwv tau txais los ntawm cov kav dej hauv qab hiav txwv, ua tiav ntawm lub nkoj thiab khaws cia rau hauv cov tsheb thauj khoom, qhov twg nws yog thaum kawg thauj mus rau shuttle tankers los ntawm kev thauj khoom.
Super duplex stainless hlau muaj cov ntsiab lus siab molybdenum, uas zoo heev txhim kho corrosion kuj ntawm stainless hlau, uas yog heev haum rau siv mus sij hawm ntev nyob rau hauv ib puag ncig uas muaj chloride ion ntsiab lus, xws li dej hiav txwv, thiab yog dav siv nyob rau hauv kev nyab xeeb li qub, pipelines. , desulfurization yees thiab lwm yam khoom hauv FPSO modules.
Cov neeg siv khoom zoo li no feem ntau muaj cov cai hauv qab no rau cov khoom siv hlau ntawm cov khoom siv vuam ntawm super duplex stainless hlau (kev sib txuam puag hlau UNS S32750 / S32760, thiab lwm yam):
| Tensile zog (Mpa) | Tensile ntev (%) | Ferrite (Tsim) | Pitting corrosion (40 ℃ * 24 teev) ASTM G48A Cov Lus Qhia | Hardness HV 10 | pib index PREN |
| ≥750 | ≥ 20 | 35-65% | ≤ 4g / m2 | ≤330 | ≥40 |
Rau cov yam ntxwv vuam thiab lwm yam kev xav tau ntawm super duplex stainless hlau, peb lub tuam txhab muaj cov khoom siv vuam sib txuas kom haum, uas tau piav qhia hauv qab no:
Kev sib tw welding consumables
| Vuam hlau qeb | SS Argon arc vuam hlau | SS tes vuam pas nrig | SS flux cored vuam hlau | SS submerged arc vuam hlau |
| npe khoom | GTS-2594 | TSW-2594 | TSI-2594 | GWS-2594 TXL-330 |
| kev siv tus qauv | AWS A5.9/5.9M-2017 ER2594 | AWS A5.4/5.4M-2012 ER2594-16 | AWS A5.22/5.22M-2012 ER2594T1-1 | AWS A5.9/5.9M-2017 ER2594 |
Tej yam muaj pes tsawg leeg
| npe khoom | GTS-2594 | TSW-2594 | TSI-2594 | GWS-2594 | |
| Alloy wt% | C | 0.012 ib | 0.017 ib | 0.022 ib | 0.017 ib |
| Mn | 0.62 ib | 1.05 Nws | 0.76 ib | 0.42 ib | |
| Si | 0.45 ib | 0.40 Nws | 0.49 ib | 0.64 ib | |
| Ni | 8.46 ib | 8.49 ib | 8.36 ib | 8.48 ib | |
| Cr | 25.02 Nws | 25.69 Nws | 24.2 ib | 24.88 Nws | |
| Mo | 3.86 ib | 3.96 ib | 3.65 ib | 3.85 ib | |
| P | 0.022 ib | 0.019 ib | 0.016 ib | 0.023 ib | |
| S | 0.001 ib | 0.005 ib | 0.003 ib | 0.001 ib | |
| W | 0.02 ib | 0.01 ib | 0.01 ib | 0.04 ib | |
| N | 0.24 ib | 0.22 | 0.27 ib | 0.24 ib | |
| PREN* | 41.6 ib | 42.2 ib | 40.5 ib | 41.4 ib | |
| Lus ceeb toom | Filler hlau | Deposition hlau | Filler hlau | Deposition hlau | |
Tej yam khoom siv
| npe khoom | GTS-2594 | TSW-2594 | TSI-2594 | GWS-2594 TXL-330 |
| Tensile zog (Mpa) | 853 ua | 9 20 | 881 ib | 889 ua |
| Tensile ntev (%) | 31 | 26 | 25 | 26 |
| Kev cuam tshuam lub zog nqus (J / ℃) | 240/-46 ib | 51/-46 ib | 50/-40 | 56/-46 ib |
| Ferrite (Test) | 49% | 43% | 36% | 40% |
| Hardness HV 10 | 280 | 295 | 289 | 292 ib |
| pitting PREN | 2.5g / m3 | 2.8g / m3 | 2.9g / m3 | 2.7g / m3 |
Xav paub ntxiv hu rau +86 13252436578
Post lub sij hawm: Nov-15-2022