BS EN 10025 S275JR steel yog tus qauv thiab cov khoom siv dav dav rau kev tsim Longitudinal Submerged Arc Welded (LSAW) kav. Nws yog ib hom qauv steel qib siv rau kev engineering, kev tsim kho, thiab qis - cov ntawv thov kev sib kis ntawm cov kua dej [citation: 1, citation: 3, citation: 4].
Zoo ib yam li S235JR, "BS EN 10025 S275JR" yog hais txogqib khoom sivntawm steel phaj. Cov khoom tiav LSAW yeeb nkab feem ntau yog tsim los rau cov khoom siv European tshwj xeeb, feem ntauTS EN 10219rau structural hollow seem, qhov twg cov yeeb nkab qib raug xaiv raws liS275 JRH[qhia: 4, citation: 6, citation: 7].
Ntawm no yog cov ncauj lus kom ntxaws ntxaws rau BS EN 10025 S275JR 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: 4, citation: 8]. |
| Qib Steel | S275 JR: Ib hom non{0}} alloy structural steel qib. Qhov "275" 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: 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 txheej txheem tswj hwm rau cov khoom tiav LSAW yeeb nkab, nrog rau qib hollow seem uas yogS275 JRH[qhia: 4, citation: 6, citation: 7]. Lwm cov qauv khoom xws li EN 10217 (rau lub hom phiaj siab) kuj tseem siv tau [citation: 2, citation: 4]. |
| 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, UOE, los yog cov txheej txheem zoo sib xws) thiab welding lub longitudinal seam ob sab hauv thiab sab nraud siv cov txheej txheem submerged arc [citation: 1, citation: 3, citation: 5]. |
| Tshuaj muaj pes tsawg leeg (max %) [citation:4, citation:6] | |
| Cov pa roj carbon (C): 0.18 - 0.22 | |
| Silicon (Si):Tsis xav tau / 0.035 | |
| Manganese (Mn): 1.50 | |
| Phosphorus (P): 0.035 | |
| Sulfur (S): 0.035 | |
| Mechanical Properties (min) [citation: 4, citation: 6, citation: 8] | |
| Yield Strength (t Tsawg dua los yog sib npaug rau 16mm):275 MPa rau | |
| Yield Strength (16mm |
|
| Tensile zog:410-560 MPa | |
| Elongation:20% (rau thickness> 3mm) | |
| Impact Properties [citation: 4, citation: 6] | Charpy V-notch Impact Energy:27 J yam tsawg kawg nkaus ntawm+20 degree |
| Hom Loj Ntau Yam [citation: 1, citation: 2, citation: 5, citation: 7] | |
| Sab nraud txoj kab uas hla:168mm txog 2500mm (kwv yees . 6" mus rau 98") | |
| Phab ntsa Thickness:5mm txog 75mm (txog 120mm muaj los ntawm qee cov tuam ntxhab) | |
| Ntev:3 m txog 18.3 m (customizable, mus txog 80 m los yog ntau tshaj muaj rau piling daim ntaub ntawv) | |
| Cov kauj ruam ntawm kev tsim khoom [citation: 3, citation: 5] | 1. steel phaj xaiv thiab ntug milling. 2. Ntug crimping thiab tsim siv cov txheej txheem JCOE lossis UOE. 3. Sab hauv thiab sab nraud submerged arc vuam. 4. Mechanical expanding (rau UOE/JCOE). 5. Tsis yog- kuaj kev puas tsuaj (Ultrasonic, X-ray). 6. Kev ntsuas hydrostatic. 7. Xaus ntsej muag thiab beveling. |
| Common Applications [citation: 1, citation: 2, citation: 3, citation: 5, citation: 7, citation: 8] | General structural engineering; kev tsim vaj tse ncej thiab kab; txuas txuas; piling foundations; machinery manufacturing; low-kev sib kis ntawm cov kua (dej, roj, roj); tej yaam num offshore; infrastructure tej yaam num. |
| Daim ntawv pov thawj | Mill Test Certificate feem ntau rauEN 10204 / 3.1[qhia: 2, citation: 5, citation: 9]. |
Nkag siab txog Qib Qib
Lub npeS275 JRH(rau cov yeeb nkab tiav) ua raws li cov qauv kev xav tau teev tseg hauv EN 10219 thiab EN 10025 [citation: 4, citation: 6]:
| Cheebtsam | Lub ntsiab lus |
|---|---|
| S | Cov qauv hlau |
| 275 | Yam tsawg kawg yield zog ntawm275 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) |
| H | Ntug Hollow(Ua raws li EN 10219) |
Qhov zoo ntawm S275JR LSAW Pipe
| Qhov zoo | Kev piav qhia |
|---|---|
| Zoo zog | Yam tsawg kawg yield zog ntawm275 MPa rau, haum rau ntau yam qauv thiab engineering daim ntaub ntawv uas siab zog tshaj S235JR yuav tsum tau. |
| Weldability zoo heev | Submerged arc vuam (LSAW) muab qhov sib sib zog nqus weld nkag mus, zoo vuam zoo, thiab cov khoom siv zoo. |
| Guaranteed Toughness | Lub ntsiab lus "JR" lav qhov cuam tshuam tsawg kawg ntawm lub zog ntawm27 Joules ntawm chav tsev kub, kom ntseeg tau tias muaj zog txaus rau cov qauv siv dav dav [citation:4, citation:6]. |
| Loj Loj Muaj peev xwm | LSAW txheej txheem tso cai rau kev tsim cov kav dej loj - txoj kab uas hla (txog 98 "+) nrog cov phab ntsa tuab (txog 75-120mm) zoo tagnrho rau kev tsim kho loj thiab kev tsim kho vaj tse [citation: 1, citation: 5]. |
| Lub neej ua haujlwm ntev | Nrog rau kev tswj corrosion kom zoo (txheej txheej, tiv thaiv cathodic) thiab kev ua haujlwm, kev pabcuam lub neej tuaj yeem ncav cuag80 txog 100 xyoo . |
| Dimensional raug | Niaj hnub no JCOE thiab UOE tsim cov txheej txheem muab kev tswj xyuas meej ntawm cov yeeb nkab qhov ntev [citation: 3, citation: 5]. |
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:4, 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[qhia: 4, citation: 6, 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 S275JRH[qhia: 4, citation: 6, citation: 7].
Cov ntsiab lus
Hauv kev xaus,BS EN 10025 S275JR LSAW yeeb nkabyog ib qho zoo- tsim, muaj ntau yam khoom uas sib txuas cov khoom txhim khu kev qha ntawm S275JR cov qauv hlau nrog cov txheej txheem tsim khoom LSAW. Nws yog feem ntau manufactured rau lubTS EN 10219khoom txheem raws liS275 JRHthiab yog dav siv rau ntau yam ntawm cov qauv, kev tsim kho, piling, thiab kev siv engineering dav dav uas yuav tsum muaj zog ntau dua S235JR [citation: 1, citation: 2, citation: 5, citation: 7]. Cov txheej txheem LSAW ua rau kev tsim cov kav loj - txoj kab uas hla nrog cov phab ntsa tuab, ua rau nws tsim nyog rau cov phiaj xwm loj [citation: 1, citation: 5]. Thaum qhia meej, nws yog qhov zoo tshaj plaws los siv ob qho tib si qib khoom siv thiab cov qauv khoom siv (xws li,EN 10219 S275JRH LSAW yeeb nkab).
