EN S355JR steel yog cov khoom siv ntau heev thiab dav siv rau kev tsim Longitudinal Submerged Arc Welded (LSAW) kav. Nws yog ib qho siab - lub zog steel feem ntau tau teev tseg rau ntau yam kev tsim kho, engineering, thiab qis - cov ntaub ntawv siv cov kua dej sib kis. Cov yeeb nkab tiav lawm feem ntau yog tsim los rauTS EN 10210los yogTS EN 10219Cov qauv khoom rau welded structural hollow seem [citation: 1, citation: 4, citation: 6, citation: 7].
Ntawm no yog cov ncauj lus kom ntxaws specification rau EN S355JR 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 . |
| Qib Steel | S355 JR: High -lub zog steel qib. Qhov "355" qhia qhov tsawg kawg nkaus tawm lub zog hauv MPa. Lub ntsiab lus "JR" txhais tau hais tias qhov cuam tshuam tsawg kawg nkaus ntawm lub zog27 Joules ntawm chav tsev kub (+20 degree)[qhia: 2, citation: 4]. |
| Khoom Txheem | TS EN 10210: Kub- tiav cov qauv hollow seem [citation:1, citation:4, citation:6]. TS EN 10219: Txias- tsim welded structural hollow seem [citation:1, citation:2, citation:6, citation:7, citation:10]. Lwm cov qauv khoom siv tau suav nrogTS EN 10217(rau lub hom phiaj siab),API 5L, los yogASTM A53, nyob ntawm qhov project [citation: 1, citation: 3, citation: 6, citation: 7]. |
| 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 ntawm ob sab hauv thiab sab nraud siv cov txheej txheem submerged arc. Cov txheej txheem no tau zoo- haum rau kev tsim cov kav loj - txoj kab uas hla nrog cov phab ntsa tuab [citation: 1, citation: 4, citation: 6, citation: 8]. |
| Chemical Composition (Max%) | |
| Cov pa roj carbon (C): 0.22 | |
| Silicon (Si): 0.55 | |
| Manganese (Mn): 1.60 | |
| Phosphorus (P): 0.030 | |
| Sulfur (S): 0.030 | |
| Carbon sib npaug (CET):Tsawg dua lossis sib npaug li 0.42% | |
| Mechanical Properties (min) [citation: 2, citation: 4] | |
| Yield Strength (t Tsawg dua los yog sib npaug rau 16mm):355 MPa rau | |
| Tensile zog:470-630 MPa | |
| Elongation:Ntau dua lossis sib npaug li 22% | |
| Impact Properties [citation:2, citation:4] | Charpy V-notch Impact Energy:27 J yam tsawg kawg nkaus ntawm+20 degree |
| Hom Loj Ntau Yam [citation: 1, citation: 3, citation: 8] | |
| Sab nraud txoj kab uas hla:219mm txog 2134mm (8 "mus rau 84") | |
| Phab ntsa Thickness:5.0mm txog 75mm | |
| Ntev:3 m txog 18.3 m (txog 75 m muaj rau kev siv tshwj xeeb xws li piling) | |
| Cov kauj ruam ntawm kev tsim khoom [citation: 6, citation: 8] | 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 dav [citation: 1, citation: 2, citation: 4, citation: 6, citation: 7, citation: 10] | General structural engineering; kev tsim kho vaj tse; txuas txuas; piling foundations; tej yaam num offshore; low-kev sib kis ntawm cov kua (dej, roj, roj); mechanical thiab cog engineering; cua zog yees; infrastructure tej yaam num. |
| Daim ntawv pov thawj | Mill Test Certificate feem ntau rauEN 10204 / 3.1[qhia: 3, citation: 6]. |
Nkag siab txog Qib Qib
Lub npeS355 JRUa raws li cov qauv kev xav tau txhais hauv EN 10025:
| Cheebtsam | Lub ntsiab lus |
|---|---|
| S | Cov qauv hlau |
| 355 | Yam tsawg kawg yield zog ntawm355 MPa rau(rau thicknesses Tsawg dua los yog sib npaug rau 16mm) |
| JR | Impact test xav tau:27 Joules yam tsawg kawg nkaus ntawm chav tsev kub (+20 degree) |
Qhov zoo ntawm EN S355JR LSAW Pipe
| Qhov zoo | Kev piav qhia |
|---|---|
| Siab zog | Yam tsawg kawg yield zog ntawm355 MPa rau- siab dua S275 qib, tso cai rau cov phab ntsa nyias nyias los yog siab dua cov peev txheej hauv cov qauv tsim [citation: 2, citation: 4]. |
| Weldability zoo | Tswj chemistry (tsawg carbon sib npaug) ua kom cov weldability zoo heev rau kev sib koom ua ke thiab fabrication, uas yog qhov tseem ceeb rau kev siv cov qauv. |
| Guaranteed Toughness | Lub ntsiab lus "JR" lav qhov cuam tshuam tsawg kawg ntawm lub zog ntawm27 Joules ntawm chav tsev kub (+20 degree), kom ntseeg tau tias muaj zog txaus rau cov qauv siv dav dav [citation:2, citation:4]. |
| Loj Loj Muaj peev xwm | LSAW txheej txheem tso cai rau kev tsim cov kav loj - txoj kab uas hla (txog 84 "+) zoo tagnrho rau kev tsim kho loj thiab kev tsim kho vaj tse [citation: 1, citation: 8]. |
| Phab ntsa tuab | Muaj nrog phab ntsa thicknesses mus txog75mm ib, muab siab load-cov kabmob muaj peev xwm rau kev thov xws li piling thiab hnyav steel qauv [citation:6, citation:8]. |
| Dimensional raug | Niaj hnub nimno JCOE thiab UOE tsim cov txheej txheem muab kev tswj xyuas meej ntawm cov yeeb nkab qhov ntev (xws li, OD kam rau ua ± 0.1% D tom qab nthuav dav), ua kom zoo ib yam thiab yooj yim ntawm kev teeb tsa [citation: 4, citation: 8]. |
| High Non-Testing Pass Rate | Multi-wire submerged arc vuam thev naus laus zis ua rau muaj kev ua haujlwm siab - vuam zoo nrog rau qhov tsis yog- kev ntsuas kev puas tsuaj ntau tshaj 99% [citation:4, citation:8]. |
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.
TS EN 10210thiabTS EN 10219yog cov khoom qauv raustructural hollow seem. Lawv qhia meej txog cov txheej txheem tsim khoom (xws li LSAW), qhov ntev ntev, thiab kev ntsuas qhov xav tau rau qhov kawgcev khoom[siv: 1, citation: 2, citation: 4, citation: 7].
Yog li ntawd, ib tug ua tiav specification rau cov yeeb nkab no yuav yogTS EN 10219 LSAW yeeb nkab hauv steel qib S355JR. Cov tuam txhab loj sau npe S355JR raws li tus qauv muab hauv lawv cov LSAW yeeb nkab ntau lawm [citation: 1, citation: 4, citation: 8].
Cov ntsiab lus
Hauv kev xaus,EN S355JR LSAW pipeyog ib tug zoo-tsim, siab- lub zog steel yeeb nkab uas tsim los rau cov qauv khoom xws liTS EN 10210los yogTS EN 10219. Nws combines qhov tsawg kawg nkaus tawm los lub zog ntawm355 MPa raunrog lav chav -kub los cuam tshuam toughness ntawm27 Joules ntawm +20 degree, ua rau nws muaj ntau yam thiab siv dav xaiv rau ntau yam kev siv xws likev tsim kho vaj tse, choj engineering, piling foundations, qis -kev xa dej siab, thiab cov phiaj xwm kev tsim kho vaj tse[npe: 1, citation: 2, citation: 4, citation: 6, citation: 7, citation: 10]. Cov txheej txheem tsim khoom ntawm LSAW tso cai rau kev tsim cov kab loj loj (txog 84 "+) nrog cov phab ntsa tuab (txog 75 hli), muab kev thauj khoom zoo heev -cov kabmob muaj peev xwm rau kev tsim kho loj thiab cov haujlwm engineering [citation: 1, citation: 6, citation: 8].EN 10219 S355JR LSAW yeeb nkab) kom ntseeg tau tias cov yeeb nkab ua tau raws li txhua qhov kev xav tau rau nws txoj kev siv.
