Dab tsi yog EN 10025-3 S275NL STEEL?
EN 10025 - 3 s275nl steel phaj yog qhov qis {} {} {} {{ Nws ua raws li European tus qauvEN 10025-3, uas txhais cov txheej txheem kev ua haujlwm rau ib txwm / nonized dov weldable nplua cov qauv hlau. Tus me nyuam kis yog feem ntauzoo li caslossisNormalized dov, kom ntseeg tau ib lub uniform microstructure uas txhim kho kev nruj thiab tiv taus brittle bacture.
Cov qib "EN 10025-3 S275NL" tawg raws li:
S: Qhia tias "cov qauv hlau."
275: Sawv cev rau qhov tsawg kawg nkaus zog zog ntawm 275 MPa rau thicknesses txog li 16 hli.
Nl: Txhais tau hais txog qhov ua tau zoo li qub nrog kev cuam tshuam kev sim ntawm- 50℃rau superi qhov ntsuas kub-kub.
Raws li aCov Qauv Cov Qauv Zoo Hlau, EN 10025-3 S275NL yog ua kom tau zoo kom ua kom tau cov qoob loo me me, muab cov txiaj ntsig zoo, ua rau nws haum rau cov av txias.
Tshawb peb cov kev ua tiav ntawm EN 10025-3 li qub steel daim hlau rau ntau cov tseev kom muaj.
Dab tsi yog cov tshuaj lom neeg muaj pes tsawg leeg ntawm EN 10025-3 S275NL steel?
Cov tshuaj lom neeg muaj pes tsawg leeg ntawm EN 10025-3 S275NL yog tswj tau zoo los txhawb kev weldability zoo thiab tawv me me, nrog cov carbon zoo, nrog cov carbon zoo, nrog cov tshuaj tiv thaiv kom tsis txhob tawv thiab tawg.
Cov lus hauv qab no nthuav tawm tusKev Ntsuam Xyuas Nruab Nrab(yaj muaj pes tsawg leeg) thiabCov tshuaj ntsuam xyuas(tiav phaj) raws li EN 10025-3:
|
Lub ntsiab |
Kev Ntsuam Xyuas Nruab Nrab |
Cov tshuaj ntsuam xyuas |
|---|---|---|
|
Carbon (c) |
Max 0.16% |
Max 0.18% |
|
Silicon (si) |
Max 0.40% |
Max 0.45% |
|
Manganese (mn) |
0.50-1.50% |
0.45-1.60% |
|
Phosphorus (p) |
Max 0.025% |
Max 0.030% |
|
Sulphur (s) |
Max 0.020% |
Max 0.025% |
|
Nitrogen (n) |
Max 0.015% |
Max 0.017% |
|
Aluminium (AL) |
Min 0.02% (Tag Nrho) |
min 0.015% (tag nrho) |
|
Niobium (nb) |
Max 0.05% |
Max 0.06% |
|
Vanadium (V) |
Max 0.05% |
Max 0.07% |
|
Titanium (ti) |
Max 0.05% |
Max 0.06% |
|
Chromium (cr) |
Max 0.30% |
Max 0.35% |
|
Npib tsib caug (ni) |
Max 0.30% |
Max 0.35% |
|
Molybdenum (mo) |
Max 0.10% |
Max 0.13% |
|
Tooj Liab (Cu) |
Max 0.55% |
Max 0.60% |
TusCarbon sib npaug (CEV) is calculated as CEV = C + Mn/6 + (Cr + Mo + V)/5 + (Ni + Cu)/15. For EN 10025-3 S275NL, the maximum CEV is 0.40% for thicknesses ≤63 mm (up to 0.42% for >100 mm), ua rau nws muaj kev pheej hmoo ntau nrog kev pheej hmoo ntawm kev tawg txias hauv cov qauv.
Cov Khoom Siv Neeg Kho Tshuab ntawm EN 10025-3 S275NL
EN 10025 {6-} 3 s275nl muab lub zog sib npaug thiab sib npaug ntawm 27,6}, thiab elongation ntau dua los yog sib npaug rau 23-24%. Nws txawj ua kom zoo nyob rau hauv qis-qhov kub-kev ua tiav ntau dua lossis sib npaug ntawm 27 j (ntev charpy v-motch) ntawm -50 degree.
Cov cuab yeej kho tshuab sib txawv los ntawm tuab; Saib cov lus hauv qab no:
|
Tuab (mm) |
Peple zog (Min, MPA) |
Tensile lub zog (mpa) |
Elongation (min,%) |
Kev Cuam Tshuam Lub Zog (Min, J @ -50 Degree, Longitudinal) |
|---|---|---|---|---|
|
Tsawg dua los yog sib luag rau 16 |
275 |
370-510 |
24 |
27 |
|
16<> |
265 |
370-510 |
24 |
27 |
|
40<> |
255 |
370-510 |
24 |
27 |
|
63<> |
245 |
370-510 |
23 |
27 |
|
80<> |
235 |
370-510 |
23 |
27 |
|
100<> |
225 |
350-480 |
23 |
27 |
|
150<> |
215 |
350-480 |
23 |
27 |
|
200<> |
205 |
350-480 |
23 |
27 |
Cov txiaj ntsig no ua kom muaj kev cia siab rau hauv qhov txias, siab - kev siv ntxhov siab.
Dab tsi yog qhov sib npaug qib ntawm EN 10025-3 S275NL?
EN 10025-3 S275NL sib raug rau ntau qib kawm thoob ntiaj teb, nrog qhov sib txawv me ntsis hauv cov lus qhia tshwj xeeb:
|
Lub hom phiaj |
Qhov sib npaug ntawm qib steel |
|---|---|
|
En (Thermo - i} | |
S275M |
|
En ib txwm |
S275N |
|
Din |
Ste 285 / tste 285 |
|
AFNOR (Fabkis) |
E 28-3 |
|
BS (UK) |
43 ee |
|
Uni (ltalis) |
FE E 275 KNT |
|
GB (Suav Teb) |
Q275N |
|
ASTM / ASME |
A572 Qib 50 (kwv yees) |
Rau tus qauv -20℃variant, xa mus rau peb EN 10025-3 S275N Normonment qauv Steel phaj.
Dab tsi yog qhov sib txawv ntawm EN 10025-3 S275NL thiab S275N / S275M / S355?
Cov kev sib piv pab lwm yam hauv kev xaiv qib:
EN 10025-3 S275NL VS S275N: Ob qho no muaj lub zog zoo sib xws (275 MPa tawm los), tab sis EN65}}}}}}}℃rau s275n), zoo tagnrho rau Arctic los yog sub-xoom. Saib EN 10025-3 S275N Normonment Txheej Txheem Steel Phaj.
EN 10025-3 S275NL VS S275M: S275m siv thermomechanical tswj (TMCP) rau cov finer nplej thiab zoo dua tus nqi ntawm ib txwm muaj rau kev ua tau zoo tsis xwm yeem-temp ua tau zoo ib txwm.
EN 10025-3 S275NL VS S355: S355 delivers higher yield (355 MPa vs 275 MPa) for load-optimized designs at added expense; EN 10025 {6- 3 S275NL yog kev lag luam ntau dua rau dav dav, txias-raug qauv qauv. Kos rau EN 10025-3 S355Nnized cov qauv hlau steel phaj.
Yam khoom xws li kev nyab xeeb, thiab kev ua haujlwm xav tau tsav cov kev xaiv.
Vuam thiab kev kho cua sov ntawm EN 10025-3 S275NL
EN 10025-3 S275NL's Qauj Tsawg Kom Ua Kom Tau Kev Siv Weldability Zoo TshajGmawlossisTxiav ntoo, nyob rau hauv kab nrog en 1011-2.
Preheating: Tsis yog feem ntau xav tau rau thicknesses tsawg dua los yog sib npaug rau 20 hli; 50-100℃pom zoo rau cov ntawv tuab kom tsis txhob muaj hydrogen cracking.
Post - Weld Kev Kho Tshav Kub (PWHT): Feem ntau tsis tsim nyog; Yeem hais txog kev ntxhov siab ntawm 520-580℃rau cov ntawv thov tseem ceeb.
Pom zoo consumables:
GMAW: ER70s-6 (AWS A5.18).
Pom: Em12k flux nrog Eh14 Hlau.
Qhov no pab kom ncaj ncaj fabricalwic nrog kev sib koom ua ke siab.
Kev Siv ntawm EN 10025-3 S275Nl Hlau Phaj
EN 10025 - 3 s275Nl yog qhov kev pom zoo hauv kev lag luam uas xav tau ruaj khov, tsawg-kub ua tau:
Txuas hniav thiab thaj chaw sab nrauv: Beams thiab platforms hauv cov khoom lag luam txias.
Cua Yees thiab Cranes: Txhawb cov cua hlob thiab cov temps.
Kev Tso Tsheb Hlau Luam Thiab Pipelines: Rau cryogenic lossis caij ntuj txias kis.
Lub tsev ua haujlwm: Nyob rau hauv cov cheeb tsam qaum teb rau seismic resilience.
Xaiv EN 10025-3 S275NL rau nwsnqi - lub zog siv zog, -50℃todness, thiabkev zoo siab weldability, ua raws li Eurocode 3 rau kev tsim kom muaj kev nyab xeeb.
Saib cov kev xaiv ntsig txog peb cov EN 10025-3 S275Nl norch txheej txheem steel phaj lossis en 10025-3 s355nl no steel phaj.