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ʻO Offshore Floating Storage Vessel (FPSO) kahi mea kanu aila holoʻokoʻa e hoʻohui i ka mālama ʻana, ka hoʻokaʻawale ʻana a me ka lawe ʻana i nā huahana aila. Loaʻa ka aila ʻaila mai nā pūnāwai lalo ma o nā paipu subsea, hana ʻia ma luna o ka moku a mālama ʻia i loko o nā pahu ukana, kahi e lawe ʻia ai i nā pahu hoʻokele ma o kahi ʻōnaehana hoʻokuʻu.
Loaʻa i ka super duplex stainless steel kahi molybdenum kiʻekiʻe, kahi e hoʻomaikaʻi nui ai i ka pale ʻana i ka corrosion o ke kila kila, kahi kūpono loa no ka hoʻohana lōʻihi i nā wahi me ka nui o ka chloride ion content, e like me ka wai kai, a hoʻohana nui ʻia i nā valves palekana, pipelines. , nā hale kiaʻi desulfurization a me nā mea ʻē aʻe i nā modula FPSO.
Loaʻa i kēlā mau mea kūʻai aku nā koi aʻe no ka deposition metala waiwai o ka welding consumables o super duplex stainless steel (kūlike metala kumu UNS S32750/S32760, etc.):
| Ka ikaika tensile（Mpa） | Ka lōʻihi tensile (%) | Ferrite (Ho'āʻo) | ʻAi ʻino (40℃*24h) ASTM G48A | ʻoʻoleʻa HV10 | pitting index PREN |
| ≥750 | ≥20 | 35-65% | ≤4g/m2 | ≤330 | ≥40 |
No nā hiʻohiʻona wiliwili a me nā koi ʻenehana pili o ka super duplex stainless steel, ua loaʻa i kā mākou hui nā mea hoʻohana welding e hoʻohālikelike ʻia, i wehewehe ʻia penei:
Hoʻopili i nā mea hoʻohana wiliwili
| Māhele uwea welding | SS Argon arc welding wire | koʻokoʻo wili lima SS | uea kuʻiʻo SS flux cored | SS submerged arc welding wire |
| inoa huahana | GTS-2594 | GES-2594 | GFS-2594 | GWS-2594 GXS-330 |
| maʻamau hoʻokō | 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 |
haku mele maʻamau
| inoa huahana | GTS-2594 | GES-2594 | GFS-2594 | GWS-2594 | |
| Alloy wt% | C | 0.012 | 0.017 | 0.022 | 0.017 |
| Mn | 0.62 | 1.05 | 0.76 | 0.42 | |
| Si | 0.45 | 0.40 | 0.49 | 0.64 | |
| Ni | 8.46 | 8.49 | 8.36 | 8.48 | |
| Cr | 25.02 | 25.69 | 24.2 | 24.88 | |
| Mo | 3.86 | 3.96 | 3.65 | 3.85 | |
| P | 0.022 | 0.019 | 0.016 | 0.023 | |
| S | 0.001 | 0.005 | 0.003 | 0.001 | |
| W | 0.02 | 0.01 | 0.01 | 0.04 | |
| N | 0.24 | 0.22 | 0.27 | 0.24 | |
| PREN* | 41.6 | 42.2 | 40.5 | 41.4 | |
| ʻŌlelo | Metala hoʻopiha | Metala waiho | Metala hoʻopiha | Metala waiho | |
ʻAno mechanical maʻamau
| inoa huahana | GTS-2594 | GES-2594 | GFS-2594 | GWS-2594 GXS-330 |
| Ka ikaika tensile（Mpa） | 853 | 920 | 881 | 889 |
| Ka lōʻihi tensile (%) | 31 | 26 | 25 | 26 |
| Ka ikehu hoʻopau hopena (J/℃) | 240/-46 | 51/-46 | 50/-40 | 56/-46 |
| Ferrite （Hoao） | 49% | 43% | 36% | 40% |
| ʻoʻoleʻa HV10 | 280 | 295 | 289 | 292 |
| lua ana PREN | 2.5g/m3 | 2.8g/m3 | 2.9g/m3 | 2.7g/m3 |
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Ka manawa hoʻouna: Nov-15-2022