EN S275J0 steel yog tus qauv thiab feem ntau muaj cov khoom siv rau kev tsim Longitudinal Submerged Arc Welded (LSAW) kav. Nws yog dav tsim thiab stocked los ntawm steel yeeb nkab manufacturers thoob ntiaj teb, feem ntau muab rau lubTS EN 10219khoom txheem rau cov qauv hollow seem, qhov twg nws raug xaiv raws liS275J0H[siv: 1, citation: 2, citation: 4, citation: 7].
Raws li nrog rau lwm yam European cov ntaub ntawv qib, steel phaj nws tus kheej yog teev nyob rau hauvTS EN 10025-2, thaum cov khoom tiav cov yeeb nkab conformsTS EN 10219 .
Ntawm no yog cov ncauj lus kom ntxaws specification rau EN S275J0 LSAW yeeb nkab.
Cov ntsiab lus tseem ceeb
| Yam ntxwv | Kev piav qhia |
|---|---|
| Khoom Txheem | TS EN 10025-2: Kub- dov cov khoom ntawm cov qauv hlau. Cov qauv no qhia txog cov txheej txheem kev xa khoom rau covhlau phaj[qhia: 5, citation: 8]. |
| Qib Steel | S275J0: Tsis yog- alloy structural steel qib. Qhov "275" qhia qhov tsawg kawg nkaus tawm lub zog hauv MPa. Cov lus "J0" txhais tau hais tias muaj kev cuam tshuam tsawg kawg nkaus ntawm lub zog27 Joules ntawm 0 degree[siv: 3, citation: 4, citation: 8]. |
| Khoom Txheem | EN 10219-1/-2: Txias-ua welded structural hollow seem ntawm tsis yog- alloy thiab nplua nplej hlau. Qhov no yog tus qauv tshaj plaws rau cov khoom tiav LSAW yeeb nkab, nrog rau qib hollow seem uas yogS275J0H[npe: 1, citation: 2, citation: 3, citation: 4, citation: 7, citation: 8, citation: 9]. |
| Txheej txheem | LSAW (Longitudinal Submerged Arc Vuam): Cov kav dej yog tsim los ntawm kev tsim cov hlau phaj rau hauv lub tog raj kheej (siv JCOE lossis UOE thev naus laus zis) thiab vuam cov kav ntev ob sab hauv thiab sab nraud siv cov txheej txheem submerged arc [citation: 1, citation: 2, citation: 6, citation: 9]. |
| Tshuaj muaj pes tsawg leeg (max %) [citation:1, citation:3, citation:8, citation:9] | |
| Cov pa roj carbon (C): 0.20 | |
| Manganese (Mn): 1.50 | |
| Phosphorus (P): 0.035 | |
| Sulfur (S): 0.035 | |
| Silicon (Si):Tsis xav tau (feem ntau<0.05%) | |
| Nitrogen (N):0.009 (tshwj tsis yog muaj nitrogen txaus- khi cov ntsiab lus tam sim no) | |
| Mechanical Properties (min) [citation: 1, citation: 3, citation: 8, citation: 9] | |
| Yield Strength (t Tsawg dua los yog sib npaug rau 16mm):275 MPa rau | |
| Yield Strength (16mm |
|
| Tensile zog:410-560 MPa | |
| Elongation:20% (tej zaum yuav raug txo los ntawm 2% rau qee qhov seem loj piv) | |
| Impact Properties [citation: 1, citation: 3, citation: 4, citation: 8, citation: 9] | Charpy V-notch Impact Energy:27 J yam tsawg kawg nkaus ntawm0 degree |
| Hom Loj Ntau Yam [citation: 2, citation: 6, citation: 7] | |
| Sab nraud txoj kab uas hla:168mm txog 1820mm (6 "mus rau 72") | |
| Phab ntsa Thickness:5.0 hli mus rau 60 hli (feem ntau txog 40 hli rau cov qauv siv) | |
| Ntev:3 m txog 18.3 m (txog 70 m muaj rau kev siv tshwj xeeb xws li piling) | |
| Cov kauj ruam ntawm kev tsim khoom [citation: 1, citation: 2, citation: 9] | 1. steel phaj xaiv thiab ntug milling. 2. Ntug crimping. 3. Kev tsim siv JCOE lossis UOE cov txheej txheem. 4. Sab hauv thiab sab nraud submerged arc vuam. 5. Mechanical expansion (rau UOE/JCOE). 6. Tsis yog- kuaj kev puas tsuaj (Ultrasonic, X-ray). 7. Kev ntsuam xyuas hydrostatic. 8. Xaus ntsej muag thiab beveling. |
| Cov ntawv thov sib xws [citation: 2, citation: 3, citation: 4, citation: 6, citation: 7, citation: 8] | General structural engineering; kev tsim kho vaj tse; txuas txuas; piling foundations; tej yaam num offshore; infrastructure; mechanical thiab cog engineering; daim ntawv thov yuav tsum tau guaranteed toughness ntawm 0 degree. |
| Daim ntawv pov thawj | Mill Test Certificate feem ntau rauEN 10204 / 3.1[siv: 1, citation: 5, citation: 9]. |
Nkag siab lub npe "J0".
Cov lus "J0" hauv S275J0 qhia tias cov hlau tau raug sim los muabguaranteed cuam tshuam toughness ntawm 0 degree(27 Joules yam tsawg kawg nkaus). Qhov no positions nws ntawm:
| Qib | Impact Test Temperature | Daim ntawv thov |
|---|---|---|
| S275 JR | +20℃(chaw kub) [citation:3, citation:4] | Kev siv sab hauv tsev dav dav, huab cua nruab nrab |
| S275J0 | 0 degree[siv: 3, citation: 4, citation: 8] | Sab nraum zoov qauv nyob rau hauv temperate climates, lub caij ntuj no tej yam kev mob |
| S275J2 | -20℃[citation: 3, citation: 4, citation: 8] | Cov huab cua txias, offshore, xav tau ib puag ncig |
European Standards Framework
European system cais covkhoom txheem(dab tsi steel yog ua los ntawm) los ntawmkhoom txheem(yuav ua li cas cov yeeb nkab ua tiav thiab kuaj):
TS EN 10025-2yog cov khoom txheem rau kub- dov structural steel. Nws txhais cov tshuaj thiab mechanical zog ntawm lubhlau phajnws tus kheej [citation:5, citation:8].
TS EN 10219yog tus qauv khoom rautxias- ua welded structural hollow seem. Nws qhia meej txog cov txheej txheem tsim khoom (xws li LSAW), qhov ntev ntev, thiab kev sim ntsuas rau qhov kawgcev khoom[npe: 1, citation: 2, citation: 3, citation: 4, citation: 7, citation: 9].
Yog li ntawd, ib tug ua tiav specification rau cov yeeb nkab no yuav yogTS EN 10219 LSAW yeeb nkab hauv steel qib S275J0H[siv: 1, citation: 4, citation: 7]. Qhov 'H' hauv kev xaiv qib tshwj xeeb qhia tias nws yog ntu ntu uas ua raws EN 10219 [citation: 3, citation: 4, citation: 8].
Qhov zoo ntawm EN S275J0 LSAW Pipe
| Qhov zoo | Kev piav qhia |
|---|---|
| Kev ntseeg tau muaj zog | Yam tsawg kawg yield zog ntawm275 MPa rau, haum rau ntau yam kev siv cov qauv thiab engineering [citation: 1, citation: 3, citation: 8]. |
| Guaranteed 0℃Toughness | Lub ntsiab lus "J0" lav qhov cuam tshuam tsawg kawg ntawm lub zog ntawm27 Joules ntawm 0 degree, ua kom muaj zog txaus rau cov qauv sab nraum zoov thiab kev siv huab cua sov [citation: 3, citation: 4, citation: 8]. |
| Weldability zoo | Tswj chemistry (tsawg carbon sib npaug) ua kom zoo weldability rau kev koom ua ke thiab fabrication [citation: 3, citation: 5]. |
| Loj Loj Muaj peev xwm | LSAW txheej txheem tso cai rau kev tsim cov kav dej loj - txoj kab uas hla (txog 72 "+) zoo tagnrho rau kev tsim kho thiab kev tsim kho vaj tse loj [citation: 2, citation: 6, citation: 7]. |
| Phab ntsa tuab | Muaj nrog phab ntsa thicknesses mus txog60 mm, muab siab load-cov kabmob muaj peev xwm rau kev thov xws li piling [citation:2, citation:6]. |
| Dimensional raug | Niaj hnub nimno JCOE thiab UOE tsim cov txheej txheem muab kev tswj xyuas meej ntawm cov yeeb nkab qhov ntev [citation: 1, citation: 4, citation: 6]. |
Cov ntsiab lus
Hauv kev xaus,EN S275J0 LSAW pipeyog ib qho zoo- tsim cov khoom lag luam uas sib txuas cov khoom txhim khu kev qha ntawm S275J0 cov qauv hlau nrog cov txheej txheem tsim khoom LSAW. Nws yog feem ntau manufactured rau lubTS EN 10219cov khoom txheem thiab yog dav siv nyob rau hauv kev tsim kho, civil engineering, piling, thiab structural daim ntaub ntawv uas ib tug muaj zog, weldable, thiab loj - txoj kab uas hla steel yeeb nkab yuav tsum tau, tshwj xeeb tshaj yog thaumguaranteed toughness ntawm 0 degreeyog tsim nyog [citation:2, citation:3, citation:7, citation:8]. Thaum qhia meej, nws yog qhov kev coj ua zoo tshaj plaws los siv ob qho khoom siv qib (EN 10025-2 S275J0) thiab cov qauv khoom siv (xws li, EN 10219-2 S275J0H) kom ntseeg tau tias cov yeeb nkab ua tau raws li txhua qhov kev xav tau rau nws txoj kev siv.
