Ngo-2010, i-POSCO yaseNingizimu Korea, i-Daewoo Shipbuilding kanye nezinhlangano ezinhlanu zomhlaba ezinkulu ezihlukanisayo zaqala iphrojekthi "yokuthuthukiswa okuhlangene kwensimbi ephezulu ye-manganese kanye nezinto zokushisela ukuze kugcinwe izinga lokushisa eliphansi kakhulu", futhi bathola ukukhiqizwa kwensimbi ephezulu ye-manganese yamathangi okugcina i-LNG 2015. NgoJuni 2022, ukuze kunqamuke ibhodlela lobuchwepheshe, i-Daewoo Shipbuilding & Marine Engineering yaseNingizimu Korea (DSME) kanye ne-POSCO izobamba eyokuqala emhlabeni ukufaka amathangi okugcina uphethiloli ensimbi ye-manganese ye-LNG ezithwalini ezinkulu kakhulu ezinamandla ze-LNG. (VLCCs) Umcimbi, futhi yathi isithuthukise ubuchwepheshe bokukhiqiza amathangi kaphethiloli kusukela ekufakweni kwensimbi kuya ekushiseleni nasekubumbeni.
1. Iyini insimbi ephezulu ye-manganese?
Insimbi ephezulu ye-manganese yamathangi okugcina e-LNG iyinsimbi eyingxubevange enokuqukethwe kwe-manganese phakathi kuka-22-25%, enokumelana okuhle kwezinga lokushisa eliphansi nokumelana nokugqoka okuphezulu, okusobala kakhulu kunezinto zethangi lokugcina le-LNG Isithandwa esisha sethangi lokugcina i-LNG. izinto iNingizimu Korea ezinikele ekucwaningeni nasekuthuthukisweni iminyaka engaphezu kweshumi.
2.Ukuhlaziywa kafushane kwezinhlobo zensimbi kanye nezinzuzo kanye nokubi zazo zamathangi okugcina e-LNG Izinto zethu ezisetshenziswayo zokushisela ezihambisanayo zingahlangabezana nalezi zidingo eziqinile: Njengoba amathangi amakhulu okugcina uphethiloli e-LNG eyimishini eyinhloko yemikhumbi enamandla kaphethiloli ehambisana nemvelo kanye nalo lonke uchungechunge lwemboni ye-LNG, izindinganiso zobuchwepheshe ziqinile ngokwedlulele futhi izindleko ziyabiza.I-LNG ivamise ukugcinwa futhi ihanjiswe ngaphansi kwezinga lokushisa eliphansi kakhulu elingu -163°C.“Ikhodi Yamazwe Ngamazwe Yokwakhiwa Nezisetshenziswa Zemikhumbi Ethwala Amagesi Amanzi Ngobuningi” ibizwa ngokuthi “Ikhodi Ye-IGC”.Izinto ezine ezinezinga lokushisa eliphansi ezingasetshenziselwa ukwakha i-LNG zifaka: i-aluminium alloy steel, i-Austria Tensitic stainless steel, i-austenitic Fe-Ni alloy steel (eyaziwa nangokuthi i-Invar steel) ne-9%Ni steel (bona Ithebula 1 ukuze uthole imininingwane), kuyilapho i-9%Ni steel iyona esetshenziswa kakhulu futhi isetshenziswa kabanzi kumathangi okugcina uphethiloli we-LNG.Kodwa ukungalungi ukuthi intengo isephezulu, izinqubo zokucubungula zinzima, amandla aphansi, futhi okuqukethwe kwe-nickel emkhiqizweni kuphezulu.Eminyakeni yamuva, intengo ye-nickel iqhubekile nokukhuphuka, futhi izindleko zomkhiqizo zikhuphuke kakhulu.
Izinto ezi-4 ze-cryogenic ezingasetshenziswa ekwakhiweni kwe-LNG ngaphansi kwe- "IGC Code"
| Izinga lokushisa elincane lokuklama | Izinhlobo zensimbi eziyinhloko nokwelashwa kokushisa | Izinga lokushisa lokuhlola lomthelela |
| -165 ℃ | 9%Ni insimbi ye-NNT noma i-QT | -196℃ |
| insimbi engagqwali ye-austenitic - 304, 304L, 316/316L, 321 kanye nesixazululo esingu-347 siphathwe | -196℃ | |
| I-aluminium alloy - 5083 annealed | NO | |
| i-austenitic iron-nickel alloy (36%Ni) |
Ukuqhathaniswa kwamandla phakathi kwezinto ezisetshenziswa kakhulu ze-LNG nensimbi entsha ye-manganese ephezulu
| Into | Ngokuvamile i-alloy | high manganese steel | ||||
| 9% Insimbi | 304 SS | I-Alu 5083-O | Invar steel | MC | ||
| Izinto eziyisisekelo | Ukwakheka Kwamakhemikhali | Fe-9Ni | Fe-18.5Cr-9.25Ni | I-Al-4.5Mg | Fe-36Ni | M CH |
| I-Microstructure | α1 (+Y) | γ (FCC) | FCC | FCC | FCC | |
| Isivuno AmandlaMpa | ≥585 | ≥205 | 124-200 | 230-350 | ≥400 | |
| Amandla Okuqina Mpa | 690-825 | ≥515 | 276-352 | 400-500 | 800-970 | |
| -196℃UmthelelaJ | ≥41 | ≥41 | NO | NO | ≥41 | |
| Ukushisela | izinto ezisetshenziswayo zokushisela | I-Inconal | Uhlobo308 | ER5356 | - | I-FCA,SA,GTA |
| Isivuno AmandlaMpa | - | - | - | - | ≥400 | |
| Amandla OkuqinaMpa | ≥690 | ≥550 | - | - | ≥660 | |
| -196℃UmthelelaJ | ≥27 | ≥27 | - | - | 27 | |
I-ultra-low-low-high-manganese steel, ehlanganisa amandla aphezulu, ukuqina okuphezulu, kanye nezindleko eziphansi, inethuba elibanzi kakhulu lokusebenzisa ithangi le-LNG lokugcina uphethiloli kanye nokuvikelwa kwemvelo okuhlukile kwezimakethe zamathangi okugcina uphethiloli njenge-ammonia ewuketshezi, i-liquid hydrogen, kanye ne-methanol.
Izidingo zokwakheka nokusebenza kwensimbi ephezulu ye-manganese
Ukwakhiwa Kwekhemikhali (Okusalungiswa kwe-ASTM)
|
| C | Mn | p | s | Cr | Cu |
| % | 0.35-0,55 | 22.5-25.5 | ＜0.03 | ＜0.01 | 3.0-4.0 | 0.3-0.7 |
Ukuziphatha kwemishini
● Isakhiwo sekristalu: i-cubic lattice yobuso emaphakathi (γ-Fe)
● Izinga lokushisa elivumelekile＞-196℃
● Amandla esivuno＞400MPa (58ksi)
● Amandla e-Tensile: 800~970MPa (116-141ksi)
● Ukuhlolwa komthelela we-Charpy V-notch >41J kokuthi -196℃(-320℉)
Ukwethulwa kwezinto ezisetshenziswayo zenkampani yethu ezisezingeni eliphezulu ze-manganese ezihambisana nokushisela
Eminyakeni yamuva nje, sizinikele ocwaningweni nasekuthuthukisweni kwezinto ezisetshenziswayo zokushisela ezihambisana nensimbi ene-manganese ephezulu yamathangi okugcina e-LNG, kanye nezinto ezisetshenziswayo zokushisela ezithuthukiswe ngempumelelo ezingafanelana nezakhiwo zesisekelo sensimbi ye-manganese ephezulu yamathangi okugcina e-LNG.Izakhiwo ezithile zikhonjiswe kuThebula 2.
Izakhiwo zemishini yensimbi ephezulu ye-manganese ehambisana nezinto zokushisela ezifakiwe zensimbi
| Igama | Isikhundla | izakhiwo zemishini | ||||
| YP | TS | EL | -196 ℃ umthelela | ukuhlolwa kwe-radiographic | ||
| Imigomo yokuklama | ≥400 | ≥660 | ≥25 | ≥41 | I | |
| I-GER-HMA Φ3.2mm | I-electrode eyenziwe ngesandla | 488 | 686 | 46.0 | 73.3 | I |
| I-GCR-HMA-S Φ3.2mm | I-Metal cored wire | 486 | 700 | 44.5 | 62.0 | I |
I-Ps.Metal powder core submerged arc welding wire yensimbi ephezulu yemanganese isebenzisa i-flux GXR-200 ehambisanayo yensimbi ephezulu yemanganese
Ukushisela nokuboniswa kwesampula kwezinto ezisetshenziswayo zokushisela insimbi ye-manganese ephezulu yamathangi okugcina e-LNG
Ukushisela kwezinto ezisetshenziswayo zokushisela zensimbi ephezulu ye-manganese kuboniswa kanje
I-Electrode (GER-HMA) i-flat fillet welding ngemva kokususwa kwe-slag
I-Electrode (GER-HMA) yokushisela i-engeli yokuphakama ngemva kokususwa kwe-slag
Induku yokushisela (GER-HMA) ngaphambi nangemva kokususwa kwe-fillet welding slag
Isibonisi se-metal powder core submerged arc (GCR-HMA-S) weld
Amasampula amajoyinti okushisela wensimbi ephezulu ye-manganese aboniswa kanje
Isibonisi sesampula se-flat welding (1G) esiqinile
I-Vertical Welding (3G) isibonisi sesampula esiqinile
Isibonisi sesampula sokugoba i-flat welding (1G).
Isibonisi sesampula sokugoba i-flat welding (1G).
I-PS.Insimbi ephezulu yemanganese ishiselwe ngezinduku zokushisela i-1G ne-3G, ayikho imifantu kumasampula okugoba nomhlane, futhi ukumelana nokuqhekeka kuhle.
Isikhathi sokuthumela: Nov-22-2022