I ka makahiki 2010, ua hoʻomaka ʻo POSCO o South Korea, Daewoo Shipbuilding a me nā hui ʻelima nui o ka honua i ka papahana o ka "hoʻomohala hui ʻana o ke kila manganese kiʻekiʻe a me nā mea wili no ka wela haʻahaʻa haʻahaʻa", a ua hoʻokō i ka hana nui o ke kila manganese kiʻekiʻe no nā pahu mālama LNG. 2015. Ma ka mahina o Iune 2022, e uhai i ka bottleneck ʻenehana, ʻo Daewoo Shipbuilding & Marine Engineering (DSME) a me POSCO o South Korea e paʻa i ka mea mua ma ka honua e hoʻokomo i nā pahu pahu wahie LNG kiʻekiʻe i ka mana LNG. (VLCCs) Ceremony, a olelo mai ua hooulu ia i ka wahie pahu manufacturing enehana mai ke kila pretreatment i ka welding a me ka hana.
1. He aha ke kila manganese kiʻekiʻe?
ʻO ke kila manganese kiʻekiʻe no nā pahu mālama LNG he kila kila me ka manganese ma waena o 22-25%, he haʻahaʻa haʻahaʻa haʻahaʻa maikaʻi a me ke kūpaʻa lole kiʻekiʻe, ʻoi aku ka ʻike ma mua o nā lako pahu LNG kahiko. nā mea a South Korea i hoʻolaʻa ai i ka noiʻi a me ka hoʻomohala ʻana no nā makahiki he ʻumi.
2.Brief analysis of steel type and their advantages and disadvantages for LNG storage tanks Hiki i kā mākou mau mea hoʻoheheʻe like ʻole ke hoʻokō i kēia mau koi koʻikoʻi: No ka mea, ʻo nā pahu pahu wahie LNG nui ka mea nui o nā moku hoʻokele kaiapuni a me ke kaulahao ʻoihana LNG holoʻokoʻa. koʻikoʻi loa nā kūlana ʻenehana a he pipiʻi ke kumukūʻai. Mālama ʻia a lawe ʻia ka LNG ma lalo o ke kaiapuni ultra-haʻahaʻa o -163°C. Ua kapa ʻia ʻo "Code International no ke kūkulu ʻana a me nā lako o nā moku e lawe ana i nā kinoea wai wai ma ka nui" ʻo ia ka "IGC Code". ʻO nā mea haʻahaʻa haʻahaʻa haʻahaʻa e hiki ke hoʻohana ʻia no ka hana LNG: ke kila aluminika, Austria Tensitic stainless steel, austenitic Fe-Ni alloy steel (ʻike ʻia ʻo Invar steel) a me 9% Ni steel (e nānā i ka Papa 1 no nā kikoʻī), ʻoiai ʻo 9%Ni steel ka mea maʻamau a hoʻohana nui ʻia no nā pahu mālama wahie LNG. Akā ʻo nā hemahema ʻo ia ke kiʻekiʻe o ke kumukūʻai, paʻakikī nā kaʻina hana, haʻahaʻa haʻahaʻa ka ikaika, a kiʻekiʻe ka nickel content i ka huahana. I nā makahiki i hala iho nei, ua piʻi mau ke kumukūʻai nickel, a ua piʻi nui ke kumukūʻai huahana.
4 mau mea cryogenic hiki ke hoʻohana ʻia i ka hana LNG ma lalo o ka "IGC Code"
| Ka wela hoʻolālā liʻiliʻi | ʻO nā ʻano kila nui a me ka mālama wela | Ka wela ho'āʻo hopena |
| -165 ℃ | 9%Ni kila NNT a i ʻole QT | -196 ℃ |
| austenitic stainless steel - 304, 304L, 316/316L, 321 a me 347 i mālama ʻia | -196 ℃ | |
| Aluminum huila - 5083 annealed | NO | |
| austenitic iron-nickel alloy (36%Ni) |
Hoʻohālikelike ikaika ma waena o nā mea LNG maʻamau a me ke kila manganese kiʻekiʻe
| 'ikamu | Aleki maʻamau | kila manganese kiʻekiʻe | ||||
| 9% Ni kila | 304 SS | Alu 5083-O | Invar kila | MC | ||
| Nā mea kumu | Hoʻohui Kimia | Fe-9Ni | Fe-18.5Cr-9.25Ni | Al-4.5Mg | Fe-36Ni | M CH mn |
| Microstructure | α1（+Y） | γ(FCC) | FCC | FCC | FCC | |
| Ka ikaika huaMpa | ≥585 | ≥205 | 124-200 | 230-350 | ≥400 | |
| Ikaika U'i Mpa | 690-825 | ≥515 | 276-352 | 400-500 | 800-970 | |
| -196 ℃Ka hopenaJ | ≥41 | ≥41 | NO | NO | ≥41 | |
| Nā wiliwili | wiliwili mea hoopau | Inonal | ʻAno308 | ER5356 | - | FCA,SA,GTA |
| Ka ikaika huaMpa | - | - | - | - | ≥400 | |
| Ikaika U'iMpa | ≥690 | ≥550 | - | - | ≥660 | |
| -196 ℃Ka hopenaJ | ≥27 | ≥27 | - | - | 27 | |
Ultra-haʻahaʻa wela kiʻekiʻe-manganese kila, ka mea hui kiʻekiʻe ikaika, kiʻekiʻe toughness, a me ka haʻahaʻa kumu kūʻai, loaʻa i ka loa ākea noi prospect i ka wā e hiki mai LNG wahie waihona pahu a me ka nohona kaiapuni 'ē aʻe wahie waihona pahu kuai e like me ka wai amonia, wai hydrogen,. a me ka methanol.
Hoʻohui a me nā koi hana o ke kila manganese kiʻekiʻe
Hoʻohui Kimia
|
| 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 |
Hana mīkini
● ʻO ka hana aniani: ka lattice cubic i waena o ke alo (γ-Fe)
● ʻAe ʻia ka mahana＞-196 ℃
● Ka ikaika hua＞400MPa (58ksi)
● Ka ikaika tensile: 800~970MPa (116-141ksi)
● Charpy V-notch hoao hopena >41J ma -196℃(-320℉)
ʻO ka hoʻolauna ʻana o kā mākou hui ʻoihana kiʻekiʻe manganese kila hoʻohālikelike i nā mea hoʻohana
I nā makahiki i hala iho nei, ua hoʻolaʻa mākou iā mākou iho i ka noiʻi a me ka hoʻomohala ʻana i nā mea hoʻohana wiliwili hoʻohālikelike kiʻekiʻe-manganese no nā pahu mālama LNG, a ua hoʻomohala maikaʻi i nā mea hoʻohana wiliwili e hiki ke hoʻohālikelike i nā waiwai o nā kumu kumu hao manganese kiʻekiʻe no nā pahu mālama LNG. Hōʻike ʻia nā waiwai kikoʻī ma ka Papa 2.
Mechanical waiwai o ke kila manganese kiʻekiʻe e like me kuʻihao mea pau i waiho metala
| Inoa | Kūlana | ʻano mekini | ||||
| YP | TS | EL | -196℃ hopena | nā hoʻokolohua radiographic | ||
| Nā pahuhopu hoʻolālā | ≥400 | ≥660 | ≥25 | ≥41 | I | |
| GER-HMA Φ3.2mm | electrode manual | 488 | 686 | 46.0 | 73.3 | I |
| GCR-HMA-S Φ3.2mm | Uea wili metala | 486 | 700 | 44.5 | 62.0 | I |
Ps.Metal pauka kumu i hoʻopaʻa ʻia i loko o ke arc welding uea no ke kila manganese kiʻekiʻe e hoʻohana ana i ka flux GXR-200 no ke kila manganese kiʻekiʻe.
Weldability a me ka laʻana hōʻike o ka manganese kila kiʻekiʻe wiliwili mea hoʻohana no ka LNG waihona pahu
Hōʻike ʻia ka weldability o ka welding consumables no ke kila manganese kiʻekiʻe
Electrode (GER-HMA) wiliwili palahalaha ma hope o ka wehe ʻana i ka pala
Electrode (GER-HMA) kiʻekiʻe kiʻekiʻe kuʻi ʻana ma hope o ka wehe ʻana i ka pala
ʻO ke koʻokoʻo wiliwili (GER-HMA) ma mua a ma hope o ka wehe ʻana i ka ʻōpala wiliwili
Hōʻike weld hōʻike ʻia ka pauda metala kumu i hoʻopaʻa ʻia i loko o ke arc (GCR-HMA-S).
ʻO nā laʻana o nā hui kuʻihao hao manganese kiʻekiʻe e hōʻike ʻia penei
Hōʻike hōʻike hōʻike uʻi paʻa (1G).
Hōʻike hōʻike hōʻike hōʻike tensile wili kuʻi (3G).
Hōʻike hōʻike hōʻike hōʻike kuʻi palahalaha (1G).
Hōʻike hōʻike hōʻike hōʻike kuʻi palahalaha (1G).
PS.High manganese kila ua welded me kuʻihao koʻokoʻo 1G a me 3G,ʻaʻohe māwae i ka alo kulou a me hope kulou ana Eia kekahi laʻana, a me ka māwae kūʻē maikaʻi.
Ka manawa hoʻouna: Nov-22-2022