Kev taw qhia qhov tshwj xeeb ntawm EN 10025 cov qauv hlau tuaj yeem nyuaj thaum ntsib nrog cov lus xaus zoo li + N, + AR, thiab M. Thaum lub hauv paus qib tseem tshuav S355J2, cov lus xaus no sawv cev rau cov txheej txheem tsim khoom sib txawv.
To taub covS355J2+Nvs S355J2+AR vs S355J2MQhov sib txawv yog qhov tseem ceeb rau kev ua kom muaj kev ncaj ncees ntawm koj qhov project, tshwj xeeb tshaj yog hais txog weldability thiab toughness.
Raws li tus thawj tswj hwmntiaj teb no steel chaw tsim tshuaj paus thiab direct tsum, GNEEtshwj xeeb hauv kev tsim khoom thiab kev faib khoom ntawm siab - lub zog steel phaj. Nrog peb tus kheej rolling mills siab heev thiab cov chaw kho cua sov, peb muab tag nrho cov ntawv pov thawj S355J2 series steel raws li koj cov kev cai tshwj xeeb.
Txawm hais tias koj yog ib lub tuam txhab loj - lub tuam txhab tsim kho lossis lub khw tshwj xeeb engineering, GNEE muaj cov kws tshaj lij thiab lub Hoobkas - tus nqi ncaj qha los khaws koj qhov project ntawm pob nyiaj siv thiab mus txog qhov chaws.
Qhov sib txawv ntawm cov tub ntxhais kawm ntawm S355J2+N, S355J2+AR thiab S355J2M - Lub ntsiab lus txhais
Tag nrho peb qib yog S355 tus qauv steel tsev neeg:
- S355→ Yam tsawg kawg nkaus tawm lub zog ntawm 355 MPa
- J2→ Kev ntsuas cuam tshuam ntawm -20℃(Ntau dua lossis sib npaug rau 27J)
Lub ntsiab lus tseem ceeb
S355J2+AR (Raws li Rolled)
Muab ncaj qha tom qab kub dov, tsis muaj kev kho cua sov ntxiv
S355J2+N (Normalized)
Muab tom qab normalizing lossis normalized dov
S355J2M (Thermomechanically dov)
Ua los ntawm kev siv thermomechanical tswj kev ua haujlwm (TMCP)
👉 Kev Pom Zoo:
Qhov txawv yog feem ntautxoj kev ua, uas txiav txim siab kev ua haujlwm.
Vim li cas thiaj muaj peb qhov sib txawv -S355J2+N, S355J2+AR, thiab S355J2M- nyob rau hauv tib qib S355J2?
Lub npe "J2" hauv S355J2 qhia tias nws qhov cuam tshuam toughness ntawm -20℃ua raws li cov cai ntawm EN 10025. Txawm li cas los xij, nws qhov kev ua tau zoo nyob ntawm ...
Kev Xa Khoom
| Kev Xa Khoom | Lub Npe Lus Askiv | Kev kho cua sov | Yam ntxwv |
|---|---|---|---|
| S355J2+N | Normalized los yog Normalized Rolled | Normalized / Normalized Rolling | Uniform microstructure, ruaj khov mechanical zog, weldability zoo heev |
| S355J2+AR | Raws li Rolled | Raws li -rolled condition | Tus nqi qis dua, kev ua haujlwm loj dua |
| S355J2M | Thermomechanically Rolled | TMCP (Thermomechanical Tswj Txheej Txheem) | Siab zog, siab toughness, zoo heev low{0}}kub kev ua haujlwm |
Hauv kev siv engineering, xaiv qhov kev xa khoom tsis raug yuav cuam tshuam ncaj qha rau kev sib tsoo vuam, lub neej qaug zog, thauj khoom- muaj peev xwm, qis- qhov kub thiab txias cuam tshuam kev ua haujlwm, thiab lwm yam. Yog li ntawd, kev nkag siab txog qhov sib txawv ntawm lawv yog qhov tseem ceeb.
Qhov sib txawv ntawm Core S355J2+N, S355J2+AR thiab S355J2M - Mechanical Properties
Mechanical sib piv
| Khoom | S355J2+AR | S355J2+N | S355J2M |
|---|---|---|---|
| Yield zog | Ntau dua lossis sib npaug li 355 MPa | Ntau dua lossis sib npaug li 355 MPa | Ntau dua lossis sib npaug li 355 MPa |
| Tensile zog | 470-630 MPa | 470-630 MPa | 470-630 MPa |
| Impact Test | -20℃Ntau dua lossis sib npaug rau 27J | -20℃Ntau dua lossis sib npaug rau 27J | -20℃Ntau dua lossis sib npaug rau 27J |
| Toughness stability | Nruab nrab | Siab | Siab heev |
| Ductility | Nruab nrab | Zoo | Zoo heev |
👉 Cov ntsiab lus tseem ceeb:
Txawm hais tias tus nqi nominal zoo ib yam,S355J2M muab kev ua haujlwm zoo tshaj plawsvim TMCP.
Qhov sib txawv ntawm Core S355J2+N, S355J2+AR thiab S355J2M - Tshuaj muaj pes tsawg leeg
Kev sib xyaw ua ke (%)
| Element | S355J2+AR | S355J2+N | S355J2M |
|---|---|---|---|
| C | Tsawg dua lossis sib npaug li 0.24 | Tsawg dua los yog sib npaug li 0.20 | Tsawg dua lossis sib npaug li 0.16 |
| Mn | Tsawg dua lossis sib npaug li 1.60 | Tsawg dua lossis sib npaug li 1.60 | Tsawg dua lossis sib npaug li 1.60 |
| Si | Tsawg dua los yog sib npaug li 0.55 | Tsawg dua los yog sib npaug li 0.55 | Tsawg dua los yog sib npaug li 0.50 |
| P | Tsawg dua lossis sib npaug li 0.025 | Tsawg dua lossis sib npaug li 0.025 | Tsawg dua los yog sib npaug rau 0.020 |
| S | Tsawg dua lossis sib npaug li 0.025 | Tsawg dua lossis sib npaug li 0.025 | Tsawg dua lossis sib npaug li 0.015 |
| Nb/V/Ti | Xaiv tau | Xaiv tau | Micro{0}} alloyed |
Kev pom kev pom
S355J2M feem ntau muaj:
- Tsawg carbon cov ntsiab lus
- Micro{0}}cov khoom sib xyaw
- Zoo dua weldability
Kev kho cua sov txheej txheem thiab kev ua haujlwm ruaj khov
| Yam khoom | S355J2+N | S355J2+AR | S355J2M |
|---|---|---|---|
| Kev kho cua sov | Li qub | Raws li - dov | Thermomechanical Tswj Kev Ua Haujlwm (TMCP) |
| Kev ua haujlwm ruaj khov | ★★★★★ | ★★★ | ★★★★★ |
| Kev Nyuaj Siab | Hnav khaub ncaws | Tsis yog -uniform | Zoo heev |
| Tsawg- qhov kub thiab txias cuam tshuam | Zoo heev | Nruab nrab | Zoo heev (qee qib tuaj yeem ncav cuag -50 degree) |
Nco tseg:
S355J2+N tau txais kev kho mob zoo li qub, ua rau muaj cov qauv zoo dua qub. Vim li no, nws tau siv dav hauv kev tsim vaj tsev thiab yog cov khoom siv rau ntau qhov haujlwm EPC.
S355J2+AR tsis raug rau kev kho cua sov; nws cov khoom nyob ntawm cov khoom siv raw zoo thiab cov txheej txheem dov, uas tuaj yeem qhia txog kev pheej hmoo ntawm engineering. Nws feem ntau yog siv rau cov qauv uas muaj cov cuab yeej cuab tam tsawg.
S355J2M yog TMCP cov khoom siv dav siv hauv kev tsim kho qib siab, tshwj xeeb tshaj yog rau cov trusses, txuas hniav thiab siab -cov qauv kabmob.
Txhais qhov As -Rolled Condition: S355J2+AR yog dab tsi?
Thawj kauj ruam nyob rau hauvS355J2+N vs S355J2+AR vs S355J2MKev sib piv yog nkag siab txog "+AR" lossis "Raws li-Rolled" xwm txheej. Hauv lub xeev no, cov hlau yog kub- dov mus rau nws qhov ntev kawg yam tsis muaj kev kho cua sov tom qab. Cov khoom kawg ntawm cov hlau yog txiav txim siab los ntawm qhov ntsuas kub thiab qhov txo qis thaum lub sij hawm dov.
S355J2+AR feem ntau yog qhov kev xaiv pheej yig tshaj plaws. Txawm li cas los xij, vim tias qhov txias txias tsis yog tswj hwm nruj tom qab dov, cov qauv hauv cov nplej tuaj yeem tsis sib haum, thiab kev ntxhov siab sab hauv tuaj yeem nyob hauv lub phaj. Thaum nws ua tau raws li qhov tsawg kawg nkaus lub zog ntawm 355 MPa, nws feem ntau tsis tshua tsim nyog rau txoj kev txias txias los yog vuam hnyav piv rau nws cov normalized los yog thermo-cov cuab yeej siv tshuab.
Kev pom ntawm GNEE kub-rolling kab ntau lawm
S355J2 AR txhais li cas? Dab tsi yog Qhov Kev Ruaj Ntseg Muag Khoom?
Ntau tus neeg siv khoom feem ntau nug:
S355J2 AR txhais li cas? Vim li cas thiaj pheej yig dua + N qib?
"AR" sawv rauRaws li Rolled, txhais tau tias cov khoom tsis tau txais kev kho cua sov thiab tsuas yog txias xwb tom qab dov.
Qhov no ua rau:
- Tsis yog -cov qauv lis piam
- Kev ntxhov siab ntau dua
- Ntau dua distortion thaum vuam
- Tsis ruaj khov cuam tshuam toughness
- Qhov tseem ceeb txo qis - qhov kub thiab txias ua haujlwm piv rau cov ntaub ntawv qib + N lossis M
Yog li ntawd,tus nqi qisyog qhov zoo tshaj plaws ntawm S355J2+AR, tab sis nws kuj yog nws qhov kev pheej hmoo loj tshaj plaws.
Kev siv S355J2+ARyuav tsum zamrau cov ntawv thov xws li txuas hniav, cov qauv tsim, cov chaw tawm sab nrauv, thiab cov khoom nqa nqa.
Cov txiaj ntsig ntawm Normalizing: Nkag siab S355J2+N Steel
Thaum sib pivS355J2+N vs S355J2+AR, lub "+N" sawv rauLi qublos yogNormalized Rolled. Qhov no yog txheej txheem kev kho cua sov uas cov hlau tau rhuab saum nws qhov kub thiab txias thiab tom qab ntawd txias hauv huab cua. Cov txheej txheem no "rov pib dua" cov qauv nplej, tsim kom muaj ntau yam zoo nkauj thiab zoo nkauj siv lead ua lattice.
Qhov txiaj ntsig tseem ceeb ntawm S355J2+N yog nws txoj kev ntseeg siab. Cov xwm txheej zoo ua kom ntseeg tau tias cov khoom siv kho tshuab zoo ib yam thoob plaws tag nrho cov phaj, tsis hais qhov tuab. Qhov no ua rau nws tus qauv kev lag luam rau kev thauj khoom- cov kabmob xws li txuas hniav, cov tsev siab - nce siab, thiab cov tshuab hnyav. Yog tias koj qhov project cuam tshuam nrog kev vuam tseem ceeb, S355J2+N yog qhov zoo tshaj rau + AR vim tias cov qauv ua kom zoo zoo yuav txo tau qhov kev pheej hmoo ntawm kev tawg hauv tshav kub- thaj chaw cuam tshuam (HAZ).
Thermo-Mechanical Rolling: Qhov zoo ntawm S355J2M
Qhov "M" hauv qabS355J2+N vs S355J2+AR vs S355J2Mkev sib piv hais txogThermo-Mechanically Rolledsteel (tswj los ntawm EN 10025-4). Tsis zoo li normalizing, uas yog ib qho kev kho cua sov cais tom qab dov, thermo-mechanical dov (TMCP) yuav tsum nruj tswj kub thiab deformation tus nqi thaum lub sij hawm dov nws tus kheej.
Cov txiaj ntsig tseem ceeb ntawm S355J2M (lossis S355M) yog tias nws ua tiav lub zog siab thiab tawv nrog lub zog.qis Carbon Equivalent Value (CEV)tshaj S355J2+N. Cov ntsiab lus qis qis no ua rau cov hlau tshwj xeeb yooj yim rau vuam, feem ntau xav tau me ntsis kom tsis txhob ua ntej - cua sov txawm nyob rau hauv cov ntu tuab. Qhov no yog ib qho kev ua si - hloov pauv rau offshore platforms, shipbuilding, thiab loj -scale cua ntauwd fabrication qhov twg vuam efficiency thiab qhov hnyav yog qhov tseem ceeb.
Tus neeg soj ntsuam zoo GNEE siv lub tshuab ntsuas ultrasonic ntawm S355J2+N phaj
Tus nqi siab dua ntawm S355J2M puas tsim nyog?
S355J2M yog tsim los siv TMCP (Thermomechanical Controlled Processing) thev naus laus zis thiab muaj txiaj ntsig zoo:
- Siab dua -kub toughness
- Cov cua sov me me- cuam tshuam thaj tsam thaum vuam
- Zoo dua phaj flatness
- Txo qhov seem seem
Yog tias koj qhov project xav tau weldability zoo heev, tswj kev deformation nruj, thiab txhim khu kev qha qis -kev ua haujlwm kub,S355J2M yog qhov kev xaiv zoo tshaj plaws.
Qhov sib txawv ntawm Core S355J2+N, S355J2+AR thiab S355J2M - Cov ntawv thov
Kev sib piv ntawm daim ntawv thov
S355J2+AR
- Kev tsim kho dav dav
- Fabricated qauv
- Tsawg- cov ntsiab lus kev ntxhov siab
S355J2+N
- Cov choj
- Tshuab
- Structure engineering
S355J2M
- Offshore qauv
- Roj & roj platforms
- Cua yees
- High -kev ua tau zoo engineering tej yaam num
| Khoom siv | Pom zoo daim ntawv thov | Cov ntawv thov tsis pom zoo |
|---|---|---|
| S355J2+N | Cov tswv cuab cov qauv, txuas hniav, qis- qhov kub thiab txias ib puag ncig, hnyav welded qauv | Tej yaam num nrog nyiaj txiag nruj heev |
| S355J2+AR | Kev txhawb nqa dav dav, cov khoom siv lub teeb, tsis yog - cov khoom siv siab | Cov choj, cov cuab yeej siv siab, qis- qhov kub thiab txias, cov qauv hnyav |
| S355J2M | Offshore platforms, siab- vuam- cov haujlwm ntim, qis- cov qauv kub, cov khoom tseem ceeb | Tus nqi - txwv tej yaam num |
Qhov sib txawv ntawm Core S355J2+N, S355J2+AR thiab S355J2M - Cov Lus Qhia Xaiv
Yuav xaiv li cas
- XaivS355J2+AR→ pob nyiaj-sensitive, siv dav dav
- XaivS355J2+N→ txheem engineering lug
- XaivS355J2M→ siab -kev ua tau zoo, kev nyab xeeb- tej yaam num tseem ceeb
👉 Cov Lus Qhia Engineering:
Rau cov phaj tuab, vuam - cov qauv siv hnyav, lossis siab - yuav tsum ua tau zoo,S355J2M feem ntau yog qhov kev xaiv zoo tshaj plaws.
Qhov sib txawv ntawm Core S355J2+N, S355J2+AR thiab S355J2M - Xaus
Hauv kev xaus, lubcore sib txawv ntawm S355J2+N, S355J2+AR thiab S355J2Mfeem ntau yog nyob ntawm lawv cov txheej txheem tsim khoom thiab ua haujlwm tau zoo. S355J2+AR yog tus nqi- kev xaiv zoo rau cov ntawv thov yooj yim, S355J2+N muaj kev sib luag rau cov kev xav tau ntawm cov qauv feem ntau, thaum S355J2M muab cov cuab yeej zoo tshaj plaws thiab kev ntseeg siab rau kev xav tau ib puag ncig engineering.
Yog tias koj xaiv cov hlau zoo rau koj qhov project, GNEE tuaj yeem muab cov kws tshaj lij kev taw qhia, cov ntaub ntawv pov thawj, thiab xa khoom sai thoob ntiaj teb.
Tiv tauj peb hnub no kom tau txais cov kev daws teeb meem zoo tshaj plaws thiab cov lus hais rau S355J2+N, S355J2+AR thiab S355J2M steel phaj- ua kom muaj kev ua tau zoo tshaj plaws thiab ua kom koj cov nqi tsim nyog!
Dab tsi yog qhov txawv ntawm S355N vs S355J2+N?
S355N yog ib qho qis- alloy, normalized steel nrog microalloying rau kev txhim kho toughness, thaum S355J2+N yog tsis yog- alloy, normalized steel rau nqi- siv tau zoo.
S355N thiab S355J2+N toughness piv li cas?
Ob leeg muab ntau dua lossis sib npaug rau 27 J ntawm -20℃, tab sis S355N cov qauv zoo-grain thiab microalloying (Nb, V, Al) muab cov tawv tawv zoo tshaj rau cov ntawv thov tseem ceeb.
Qhov twg zoo dua rau vuam, S355N lossis S355J2+N?
S355J2+N qhov yooj yim muaj pes tsawg leeg thiab qis phosphorus/nitrogen ua rau nws yooj yim dua rau vuam me ntsis, txawm hais tias ob qho tib si muaj CEV tsawg (tsawg dua lossis sib npaug rau 0.43% thiab Tsawg dua lossis sib npaug li 0.45%).
Cov ntawv thov twg haum rau S355N vs S355J2+N?
S355N yog qhov zoo tagnrho rau siab - thauj khoom xws li txuas hniav thiab cranes; S355J2+N haum rau kev tsim kho thiab vaj tse, zoo ib yam li en 10025 3 s275n normalized structural steel phaj.
S355N thiab S355J2+N cov nqi sib piv li cas?
S355N yog 10-20% kim dua S355J2+N vim microalloying thiab txhim kho toughness.
Dab tsi yog qhov txawv ntawm S355ML thiab S355J2?
S355ML yog TMCP zoo-cov hlau nplej nrog -50℃cuam tshuam toughness thiab zoo dua weldability (CEV Tsawg dua lossis sib npaug rau 0.39 vs S355J2 CEV txog 0.47). Nws kuj tseem muaj cov tuab tuab zoo dua - phaj lub zog thiab qis qhov seem seem. S355J2 yog ib txwm kub dov hlau nrog -20℃cuam tshuam.
Qhov txawv ntawm S355J2 thiab S355J2G3 yog dab tsi?
S355J2G3 yog cov hlau tsis muaj hlau uas muaj kev sib txuas zoo thiab cov khoom siv kho tshuab, feem ntau siv hauv kev tsim cov khoom, cov khoom siv kho tshuab, thiab cov khoom siv. Piv txwv li,S355J2+N (EN 1.0577) yog ib yam khoom tau los ntawm normalizing S355J2 steel, uas muaj zog dua thiab toughness.
Qhov txawv ntawm S355J2 thiab S355J2 N yog dab tsi?
Qhov sib txawv ntawm ob qho tib si:
S355J2 +AR steel phaj thiab S355J2+ N steel phaj txawv feem ntau los ntawm kev xa khoom thaum muab khoom, nrog rauS355J2+AR steel phaj raug xa raws li Rolled, thiab S355J2+N steel phaj raug xa tom qab normalizing kev kho cua sov.
