1. Hydrogen embrittlement (nws) me me hauv lub zog-lub zog loj
CCS Combats nws los tswjChemistry, vuam cov txheej txheem, thiab kev kho mob tom qab weld.
Tshuaj Muaj Tshuaj:
Cov roj carbon & sulfur: CCS EH36 txwvC Tsawg dua lossis sib npaug rau 0.18%thiabS tsawg dua li lossis sib npaug rau 0.025%(vs. AB ABS EH36: s tsawg dua lossis sib npaug rau 0.010%).
Microalloying: NtxivNb / v / ti(Ntawm TMCP) kom txo cov cev (cov pa roj carbon.
Vuam cov cai:
UaCov hluav taws xob qis-hydrogen(AWS E71T-1C) thiabPreheating (75-125 degree)Rau EH36 / FH40.
Tom qab weld kev kho cua sov (pwht) required for plates >40mm.
Kev kuaj:
Qeeb Qeeb Lwj (SSRT)Rau nws ntxim nyiam (mus raws li ISO 7539).
Kev txwv: Ccs tsis muajtshwj xeeb nws cov lus ceeb toom(piv txwv li, dnv "nws-resistant").
2. Tsawg-kub nyuaj: Charpy Cov Qauv Cuam Tshuam
CCS qib (piv txwv li, CCS D, Eh36) tau ua kom zoo rau-20℃rau -40 degree, tab sis lag nyob hauvArctic-qib ua tau zoo.
Cov Qauv Yuav Tsum Tau:
CCS Qib D: Ntau dua los yog sib npaug rau 27 h ntawm -20 degree(vs. Abs qib D:Ntau dua los yog sib npaug rau 34J ntawm -20 degree).
CCS EH36: Ntau dua los yog sib npaug ntawm 34j ntawm -40 degree(ntev xwb; abs yuav tsum muaj transverse).
Cov Khoom Siv Khoom Siv:
TMCP ua: Enhiones grakes ua kom zoo dua rau kev zoo dua.
Ni-alloyed variants: Ib co mills tsimNi-hloov Eh36(0.2-0.5% ni) rau cov huab cua txias.
Gaps vs. ABS / DNV:
Tsis muaj CCS sib npaug rauAbs Eh40 Arctic(-Degree) lossisDNV g g ntsws te (-70 degree).
Txawv: CCS 2023 Cov Lus Cog Tseg-60 Qib xeem xeemrau cov chav kawm polar.
3. Vuam thiab Fabrication Contrass
CCS Koom Tesnruj vuam cov txheej txheemTxhawm rau tiv thaiv nws thiab brittle spactures.
Preheating & Interpass Temp:
EH36: 100-150℃preheat (vs. Korean Eh36: 75-100 degree).
Fh40: Xav tauPWHT if thickness >50 hli.
Cov neeg tau txais kev:
AWS E81T1-NI2Rau FH40 kom phim cov hlau hlau nruj.
Diffusible Hydrogen Txwv: Tsawg dua lossis sib luag rau 5mL / 100g (ib GB / T 3965).
NDT yuav tsum tau:
Ut + mt for all critical welds (thickness >20mm).
Kev Kawm Txog: HUDON-ZHONGHUA COMPOPYARDqis dua tus nqiTom qab txais CCS 2022 WPS cov cai.
4. Cov Ntawv Thov Tshwj Xeeb: Lng & Hydrogen Nkoj
CCS yog tsimCryogenic thiab nws-resistant steelsRau lwm cov nkoj ntxiv.
Lng Carrier:
9% ni steel: Tso siab rauKev Ntshuam (Posco / JFE); Tsis muaj CCS-lees paub sib npaug.
CCS FH40: Siv rauLub huld theem ob(tsis yog-cryogenic aav).
Hydrogen nkoj:
Nws-resistant prototypes: Baowu kev ntsuam xyuasHigh-MN Steels (5% MN)rau kev tso tsheb hlau luam.
Kev kuaj: SSRT nyob rau hauv h₂ ib puag ncig (hauv qab ccs R & D cov haujlwm).
Yav tom ntej: CCS cov phiaj xwm"H₂-npaj" kev ceeb toomlos ntawm 2025.
5. Ntawv pov thawj & Ua raws li cov qauv thoob ntiaj teb
CCS sib npaugXav Tau Hauv Ib Cheeb TsamthiabNtiaj teb no muaj kev sib twnyob rau hauv cov khoom pom zoo.
Ua kom muaj tseeb hauv tsev:
90% ntawm Tuam Tshoj-ua nkojSiv CCS cov hlau;Cov phiaj xwm BriTsav tsheb thov.
Thoob Ntiaj Teb:
ABS / DNV Kev Pom Zootoob kasNtxiv kev ntsuam xyuas(piv txwv li, -60℃charpy rau cov chav kawm polar).
Daim Ntawv Pov Thawj Ob: Baowu'sCCS + Abs Eh36nce tawm hauv kev lag luam xa tawm.
Ntsuab Hlau Laub:
CCS txhawbEAF / TMCP Txoj KevTxhawm rau txiav cole (thiab bf-bof).
Chaw saib xyuas: CCS lub hom phiaj los ua kom haum nrogImo ghg cov caiTab sis kev DNV / ABS hauv kev yuam cai.
