EN S275JR steel yog ib qho zoo thiab zoo -cov ntaub ntawv qib rau kev tsim Longitudinal Submerged Arc Welded (LSAW) kav. Nws yog dav muaj los ntawm ntau cov yeeb nkab steel manufacturers thiab cov neeg muag khoom thoob ntiaj teb [citation: 1, citation: 2, citation: 4, citation: 5].
Nws yog ib qho tseem ceeb kom nkag siab tias "EN S275JR" xaiv tusqib khoom sivntawm steel phaj siv los ua raw khoom. Cov yeeb nkab tiav nws tus kheej yog tsim los rau cov khoom siv European tshwj xeeb, feem ntauTS EN 10219rau structural applications.
Ntawm no yog cov ncauj lus qhia ntxaws ntxaws rau EN 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 cov phaj hlau, suav nrog nws cov tshuaj lom neeg thiab cov khoom siv kho tshuab [citation: 4, citation: 9]. |
| 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 27 Joules ntawm chav tsev kub (+20℃) [citation:6, citation:9]. |
| Khoom Txheem | TS EN 10219: 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 [citation: 2, citation: 5, citation: 9]. Lwm cov qauv khoom siv tau suav nrogTS EN 10217(rau lub hom phiaj siab) lossis qhov project- tshwj xeeb specifications [citation:1, citation:4, citation:8]. |
| 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 UOE, JCOE, lossis RBE 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: 10]. |
| Chemical Composition (Max%) | |
| Cov pa roj carbon (C): 0.18 - 0.22 | |
| Manganese (Mn): 1.50 | |
| Phosphorus (P): 0.035 | |
| Sulfur (S): 0.035 | |
| Silicon (Si): 0.035 | |
| Mechanical Properties (min) [citation: 6, citation: 9] | |
| Yield zog:275 MPa (rau thickness Tsawg dua los yog sib npaug rau 16mm) | |
| Tensile zog:410-560 MPa ntau | |
| Hom Loj Ntau Yam [citation: 2, citation: 6, citation: 10] | |
| Sab nraud txoj kab uas hla:323.9mm txog 1626mm (12 "mus rau 64") | |
| Phab ntsa Thickness:5.0mm txog 60mm | |
| Ntev:6 m txog 12.3 m (txog 75 m muaj rau kev siv tshwj xeeb xws li piling) | |
| Cov kauj ruam ntawm kev tsim khoom [citation: 2, citation: 10] | 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. |
| Common Applications [citation: 1, citation: 2, citation: 7] | 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. |
| Daim ntawv pov thawj | Mill Test Certificate feem ntau rauEN 10204 / 3.1los yog3.1B[siv: 1, citation: 3, citation: 8]. |
Nkag siab txog 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 tiav yog tsim thiab sim).
TS EN 10025-2yog cov khoom txheem rau kub- dov structural steel. Nws txhais cov tshuaj thiab mechanical zog ntawm lubhlau phajnws tus kheej, xws li S275JR [citation:4, citation:9].
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 khoomUa los ntawm EN 10025 steel phaj [citation: 2, citation: 5, 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 S275JRH. Qhov 'H' nyob rau hauv qib kev xaiv (piv txwv li, S275JRH) tshwj xeeb qhia tias nws yog ib qho hollow seem ua raws li EN 10219.
Qhov zoo ntawm EN S275JR LSAW Pipe
| Qhov zoo | Kev piav qhia |
|---|---|
| Kev ntseeg tau muaj zog | Yam tsawg kawg yield zog ntawm275 MPa rau, haum rau ntau yam ntawm cov qauv thiab engineering daim ntaub ntawv. |
| Weldability zoo | Tswj chemistry (tsawg carbon sib npaug) ua kom zoo weldability rau kev sib koom ua ke thiab fabrication. |
| Loj Loj Muaj peev xwm | LSAW txheej txheem tso cai rau kev tsim cov kav dej loj - txoj kab uas hla (txog 64 "+) zoo tagnrho rau kev tsim kho thiab kev tsim kho vaj tse loj [citation:2, citation:10]. |
| 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:10]. |
| Guaranteed Toughness | Lub ntsiab lus "JR" lav qhov cuam tshuam tsawg kawg ntawm 27 Joules ntawm chav tsev kub (+20 degree), ua kom muaj zog txaus rau cov kev pabcuam dav dav [citation: 6, citation: 9]. |
| Dimensional raug | Niaj hnub nimno JCOE thiab UOE tsim cov txheej txheem muab kev tswj xyuas meej ntawm cov yeeb nkab qhov ntev [citation: 2, citation: 10]. |
Cov ntsiab lus
Hauv kev xaus,EN S275JR LSAW pipeyog ib qho zoo- tsim cov khoom lag luam 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 10219Cov khoom lag luam thiab tau siv dav hauv kev tsim kho, engineering engineering, piling, thiab cov qauv siv dav dav uas yuav tsum muaj lub zog, weldable, thiab loj - txoj kab uas hla steel yeeb nkab yuav tsum [citation: 2, citation: 4, citation: 7]. Thaum qhia meej, nws yog qhov zoo tshaj plaws los siv ob qho khoom siv qib (EN 10025-2 S275JR) thiab cov qauv khoom siv (xws li EN 10219) kom ntseeg tau tias cov yeeb nkab ua tau raws li txhua qhov kev xav tau rau nws txoj kev siv.
