Tsab ntawv Q sawv cev rau lub zog tawm los ("Qu" hauv Suav pinyin), thaum 460 qhia tias cov hlau muaj qhov tsawg kawg nkaus ntawm 460 MPa.
MPa (megapascal) yog ib chav tsev ntawm siab, qhov twgmegasib npaug 10⁶.
Yog li ntawd, Q460 txhais tau hais tias cov yeeb nkab steel yuav pib mus tas li (yas) deformation tsuas yog thaum cov kev ntxhov siab thov mus txog 460 MPa. Thaum lub load sab nraud raug tshem tawm, cov yeeb nkab tsis tuaj yeem rov qab mus rau nws qhov qub.
Qhov no lub zog yog ho siab dua li ntawm cov pa roj carbon steel kav.
Txhawm rau kom muaj qhov sib npaug ntawm cov pa roj carbon tsawg (CEQ) thiab ua kom zoo weldability, Q460 steel nce cov ntsiab lus ntawm microalloying ntsiab (xws li V, Nb, Ti) hauv kev tswj hwm.
Cov ntsiab lus no txhim kho lub zog los ntawm kev ua kom zoo ntawm cov nplej thiab cov nag lossis daus. Txawm hais tias microalloy ntxiv me ntsis nce qhov sib npaug ntawm cov pa roj carbon monoxide, tag nrho CEQ tseem qis txaus los khaws cov kev ua haujlwm vuam zoo.
Txoj Kev Xaiv Qib Qib (rau cov kav dej)
Qib kev xaiv rau Q460 steel kav muaj peb ntu:
Piv txwv li: Q460C
Q - Qhia lub zog tawm los ("Qu" hauv Suav).
460 - Yield zog tus nqi hauv MPa.
C - Qib Zoo (qeb: C, D, E).
Yog tias thickness -kev taw qhia kev ua tau zoo (Z- kev taw qhia) yog xav tau rau cov khoom siv yeeb nkab, Z- qib cim tuaj yeem ntxiv:
Piv txwv li: Q460CZ15
Tshuaj muaj pes tsawg leeg ntawm Q460 (rau kev tsim cov yeeb nkab)
(Mass feem %)
| Qib | C Tsawg dua los yog sib npaug | Mn Tsawg dua lossis sib npaug | Si Less than los sib npaug | P Tsawg dua lossis sib npaug | S Tsawg dua los yog sib npaug | V Tsawg dua los yog sib npaug | Nb Tsawg dua los yog sib npaug | Ti Less than los sib npaug | Al Greater dua los yog sib npaug | Cr Tsawg dua lossis sib npaug | Ni tsawg dua los yog sib npaug |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Q460C | 0.20 | 1.80 | 0.60 | 0.030 | 0.030 | 0.20 | 0.11 | 0.20 | 0.015 | 0.30 | 0.80 |
| Q460D | - | - | - | 0.030 | 0.025 | - | - | - | - | - | - |
| Q460E | - | - | - | 0.025 | 0.020 | - | - | - | - | - | - |
(Faj seeb: Q460D thiab Q460E muaj kev txwv P thiab S nruj dua los txhim kho toughness thiab qis -kub kev ua haujlwm.)
Mechanical Properties (rau Q460 Yeeb Nkab)
Yield Strength Requirements
Tsawg dua lossis sib npaug li 16 hli: Ntau dua lossis sib npaug li 460 MPa
16-40 mm: Ntau dua lossis sib npaug rau 440 MPa
40-63 mm: Ntau dua lossis sib npaug rau 420 MPa
63-80 mm: Ntau dua lossis sib npaug li 400 MPa
80-100 mm: Ntau dua lossis sib npaug li 400 MPa
100-150 mm: Ntau dua lossis sib npaug li 380 MPa
Tensile zog
550-720 MPa
Elongation
Ntau dua lossis sib npaug li 17%
Impact Performance
0℃Charpy V-notch cuam tshuam lub zog Ntau dua lossis sib npaug rau 34 J
