Dab tsi yog cov khoom thiab kev siv ntawm S355J0?
S355J0yog qhov siab -lub zog qis- alloy structural steel teev nyob rau hauv European tus qauv EN 10025-2. Nws yog cov khoom siv tseem ceeb rau kev tsim kho niaj hnub, tshwj xeeb tshaj yog nyob rau hauv ib puag ncig uas xav tau txias-kub toughness.
Nov yog cov ncauj lus kom ntxaws:
Cov khoom tseem ceeb
Mechanical Properties (rau cov thicknesses tsawg dua los yog sib npaug li 16 hli):
Yam tsawg kawg Yield Strength (ReH): 355 MPa rau
Tensile zog (Rm):470 - 630 MPa
Yam tsawg kawg Elongation ntawm Break (A):~ 21-22% (ua kom zoo ductility)
Impact Toughness (KV): Yam tsawg kawg ntawm 27 Joules ntawm 0 degree.Qhov no ua pov thawj nws qhov kev tiv thaiv rau nkig tawg nyob rau hauv txias txias.
Cov yam ntxwv tseem ceeb:
Weldability zoo heev:Nws muaj kev tswj hwm tus nqi sib npaug (CEV), feem ntau nyob ib puag ncig 0.40-0.45, tso cai rau nws yooj yim welded los ntawm txhua txoj hauv kev yam tsis muaj cua sov ua ntej rau feem ntau cov tuab hauv ib txwm muaj.
Zoo Machinability thiab Formability:Nws tuaj yeem drilled, txiav, thiab khoov raws li tus qauv xav tau.
Cov tshuaj lom neeg muaj pes tsawg leeg (siab tshaj %)
| Yam tsawg kawg Yield Strength (ReH) | 355 MPa rau | Rau thickness ≤ 16 hli (tsawg nrog thickness) |
| Tensile zog (Rm) | 470 - 630 MPa | Rau thickness ≤ 40 mm |
| Yield-rau-Tensile Ratio | ~0.65 - 0.75 | Txaus siab rau cov qauv kev nyab xeeb (yas deformation ua ntej rupture) |
| Tsawg kawg Elongation (A) | ≥ 22% | Rau thickness ≤ 40 hli (Tswj zoo ductility) |
| Impact Toughness (KV) | ≥ 27 J ntawm 0 ° C | Qhov txhais "J0" cov cuab yeej - Charpy V-notch test |
| Modulus ntawm Elasticity | ~ 210 GPa | Standard rau tag nrho cov hlau |
| Poisson tus ratio | ~0.3 | Standard rau tag nrho cov hlau |
| Qhov ntom | ~ 7,850 kg/m³ |
| Element | C | Si | Mn | P | S | N | Cu |
|---|---|---|---|---|---|---|---|
| Cov ntsiab lus | 0.20-0.22 | 0.55 | 1.60 | 0.035 | 0.035 | 0.015 | 0.55 |
* Ceeb Toom: Qhov tseeb muaj pes tsawg leeg sib txawv los ntawm cov chaw tsim khoom. Carbon Equivalent (CEV) feem ntau 0.40-0.45 rau weldability zoo.*
TSEEM CEEB
A. Lub Tsev & Kev Tsim Kho
Ntau-Cov Tsev Zaj Dab Neeg: Cov kab teeb tseem ceeb, kab, thiab cov trusses hauv kev lag luam / kev lag luam
Muaj Cov Khoom Siv: Lub Hoobkas thav duab, cov khoom tsim khoom lag luam, crane khiav
Cov Chaw Ua Lag Luam & Chaw Ua Si: Ntev - ncua lub ru tsev trusses thiab txhawb nqa
Modular Siv: Prefabricated Cheebtsam rau kev sib dhos ceev
B. Txuas hniav & Infrastructure
Txoj Kev & Railway Choj: Cov girders loj, hla - kab teeb, thiab cov qauv kev txhawb nqa
Pedestrian Choj: Ua kom tiav cov txheej txheem
Transmission Towers: Lattice structures rau cov kab hluav taws xob
Offshore & Marine: Cov txheej txheem thib ob ntawm cov platforms, chaw nres nkoj
C. Heavy Engineering
Crane & Lifting Equipment: Booms, thav duab, thiab kev txhawb nqa
Mining & Quarrying: Cov khoom siv thav duab, kev txhawb nqa cov qauv
Agricultural Machinery: Heavy- lub luag haujlwm thav ntawv rau cov tshuab txiav, tsheb laij teb
Tsheb thauj mus los: Chassis Cheebtsam rau cov tsheb hnyav, trailer ncej
Summary: Standard for Demanding Construction
S355J0 yog cov qauv qauv hlau rau kev tsim kho niaj hnub hauv huab cua sov. Nws qhov sib xyaw ua ke ntawm 355 MPa yield zog thiab muaj ntawv pov thawj toughness ntawm 0 ° C ua rau nws yog qhov kev xaiv zoo tshaj plaws rau cov txuas hniav, ntau-cov tsev dab neeg, thiab cov qauv kev lag luam uas yuav tsum tau muaj zog thiab kev nyab xeeb hauv huab cua txias. Nws muaj ntau yam, zoo- nkag siab txog cov khoom, thiab kev ua raws li cov cai thoob ntiaj teb ua rau nws muaj kev ntseeg siab, thawj- cov khoom xaiv rau cov kws tsim qauv thoob ntiaj teb.
Tag nrho cov specification thiab cov ntsiab lus muaj nyob rau ntawm kev thov. Cov ntaub ntawv saum toj no yog muab rau kev taw qhia nkaus xwb. Rau kev tsim tshwj xeeb thov hu rau peb cov neeg ua haujlwm muag khoom.
