Ntawm no yog ib qho kev sib tsoo ntau dua ntawm covCov Khoom Siv Cov Qauv Ntawm Q460NH Treathering Hlauraws liEN 10025-5: 2019thiab cov kev muaj feem cuam tshuam ntsig txog, suav nrog cov txuj ci ntxiv:
1. Cov Cuab Yeej Siv Tshuab (EN 1005-5: 2019)
| Ntiag tug | Tus Qauv Txheem | Sau ntawv |
|---|---|---|
| Paib lub zog (rov qab) | Ntau dua los yog sib npaug rau 460 MPa | - ntsuas ntawm 0.2% offset. |
| Lub zog tensile (RM) | 550-720 mpa | - Yuav tsum poob nyob rau hauv no ntau; Raug nruab nrab ~ 620 mpa. |
| Elongation (A₅) | Ntau dua los yog sib npaug rau 17%(tuab tsawg dua los yog sib npaug rau 16 hli) | - txo qis nrog tuab:Ntau dua los yog sib npaug rau 16-40mm: ntau dua lossis sib npaug rau 16%, Ntau dua los yog sib npaug rau 40-63mm: ntau dua lossis sib npaug rau 15%. |
| Kev Cuam Tshuam Tougness (KV) | Ntau dua los yog sib luag rau 27 j ntawm -20 degree | - Charpy V-nthuav tawm kev sim; qee qhov specs xav tauNtau dua los yog sib npaug rau 40 jrau cov ntawv thov tseem ceeb. |
2. Thickness-hauj lwm variations
YUG & TENILE LUB ZOG:
Thicker sections (e.g., >63 hli) Tej zaum yuav ua rau pom cov txiaj ntsig / tensile tseem ceeb vim qeeb qeeb tus nqi thaum dov.
Elongation:
Txo cov qauv ductility hauv cov paib tuab (saib cov lus saum toj no).
3. Cov kev xav tau ntxiv rau cov huab cua sib txawv
Corrosion Kuj:
Patina tsim: Q460NH tsim cov txheej ruaj khov (poob qis dua lossis sib npaug rau 0.1 mm / xyoo hauv huab cua me me).
Alloy Ntsiab Lus: Cu, Cr, Ni, thiab P Enhance atmospheric corrosion (ib qho ISO 14788).
Kev nyuaj: Feem ntau150-200 hbw; Zam kev ua kom tawv nqaij ntau dhau thaum lub sij hawm vuam / txias ua haujlwm.
4. Kev sib piv nrog cov tsis muaj zog q460
| Ntiag tug | Q460nd | Zoo li Q460 |
|---|---|---|
| Corrosion Kuj | Yus tus kheej tiv thaiv Patina | Yuav tsum muaj cov txheej txheej |
| Kev Cuam Tshuam | Siab dua (vim cov khoom siv alloy) | Lub hom phiaj |
| Tus nqi | 10-20% siab dua | Qi dua |
5. Kuaj & Ntawv Pov Thawj
Yuav tsum tau xeem: Tensile, Cuam Tshuam (Charpy), thiab khoov xeem rau ib qho rau 10025-5.
Mill xeem Daim Ntawv Pov Thawj (MTC): Yuav tsum muaj:
Tshuaj lom neeg muaj pes tsawg leeg (CU, CR, NI, P Theem).
Cov cuab yeej ua lwm yam (cov nqi tiag tiag, tsis yog tsuas yog minima).
Corrosion Cov Ntaub Ntawv Ua Tau Zoo (yog tias sau tseg).
6. Cov tswv yim cuam tshuam rau kev tsim qauv
Kev Siv Cov Qauv Txheej Txheem: Nco ntsoov Weld Cov Txheej Txheem Cov Txheej Txheem rau Alloy cov ntsiab lus (Preheat / pwht yog xav tau).
Daim Ntawv Thov Kom Zoo Nkauj: Cia 6-18 lub hlis rau cov khaub ncaws patina sib dhos; Pib tawm dej num tuaj yeem stain cov chaw.
Rautxoj haujlwm-kev tsim txom(piv txwv li, orshore lossis seismic tsim), sab lajEn 1993-1-1 (Eurocode 3)lossisAIS 303Cov. Ib txwm siv tau nrog cov ntaub ntawv xeem ntsuas cov ntaub ntawv (MTRS).
