Cov Khoom Xa Tawm Ntawm Q460NHNh Treathering Hlau
Q460nd yog feem ntau muab rau hauvPeb thawj tus xa khoom, txhua tus cuam tshuam nws cov khoom siv tshuab, weldability, thiab corrosion tsis kam. Hauv qab no yog cov ncauj lus kom ntxaws:
1. Kub-Rolled (Hr) Lub Xeev
Kev ua: Dov ntawm qhov kub siab (≈1100-900 degree) yam tsis muaj kev kho cua sov tom ntej.
Cov yam ntxwv:
Lis qauv: Coarser nplej piv rau cov txheej txheem tswj.
Cov Khoom Siv Neeg Kho Tshuab: Ua tau raws li qhov tsawg kawg nkaus GB / T 4171 yuav tsum tau tab sis nrog qis tawv.
Tus nqi: Qis tshaj ntawm cov neeg xa khoom.
Cov Kev Siv Raug Raug:
Tsis yog tus txheej txheem tseem ceeb.
Qhov uas muaj kev cuam tshuam nyuaj ntawm tsawg kub tsis yog kev txhawj xeeb loj.
2. Qub (N) State
Kev ua: Kub-rolled steel yog rov ua kom ≈900℃thiab huab cua txias rau cov qauv grade.
Cov yam ntxwv:
Lis qauv: Uniform, nplej nplej dua li kub-dov.
Cov Khoom Siv Neeg Kho Tshuab:
Txhim kho kev nruj (tshwj xeeb yog nyobtsawg kub).
Zoo dua Weldability (txo kev pheej hmoo ntawm kev pheej hmoo ntawm baz cracking).
Corrosion Kuj: Ua kom zoo me ntsis vim homogeneous microstructure.
Cov Kev Siv Raug Raug:
Choj, vaj tse siab, thiab vaj tse nyob rau hauvSawv Cev Muaj Nqis.
Qhov chaw Charpy uas cuam tshuam rau cov Stricter (piv txwv li,Ntau dua los yog sib npaug rau 50 j at -40 degree).
3. Thermo-Mechanically Cov Txheej Txheem Txheej Txheem (TMCP / Tshuaj Txhob Rolling)
Kev ua: Kho kom tswj tau cov dov kub (≈800-500 degree) + nrawm txias.
Cov yam ntxwv:
Lis qauv: Ultra-nplua nplej (ntau tshaj plaws touggness).
Cov Khoom Siv Neeg Kho Tshuab:
Zoo tshajTsawg-Kub Cuam Tshuam(feem ntau tshaj tus qauv yuav tsum tau).
Siab dua lub zog-rau-qhov hnyav piv.
Corrosion Kuj: Denser tiv thaiv Twina vim cov coj ua Micrubtructure.
Cov Kev Siv Raug Raug:
Arctic / Roj Rig Cov Qauv(huab cua tsawg-qhov chaw nyob).
Qhov tseem ceeb weld ib qho chaw (xws li, seismic-resistant tsim qauv).
Sib piv cov lus qhia
| Ntiag tug | Kub-rolled (hr) | Normalized (n) | Tmcp |
|---|---|---|---|
| Qoob ntais loj | Txhav | Nruab nrab | Npluas |
| Yield zog (mpa) | Ntau dua los yog sib npaug rau 460 | Ntau dua los yog sib npaug rau 460 | Ntau dua los yog sib npaug rau 460 |
| Kev Cuam Tshuam Toughness (-40 Qib) | Ntau dua los yog sib npaug rau 34 j | Ntau dua los yog sib npaug rau 40-60 j | Ntau dua los yog sib npaug rau 50-70 j |
| Hwj txwv | Tswj kav | Zoo | Zoo tshaj |
| Tus nqi | Qis tshaj | Nruab nrab | Siab tshaj plaws |
