BS EN 10025 S355JR steel yog cov khoom siv dav heev thiab siv dav hauv qib siab - cov khoom siv zog rau kev tsim Longitudinal Submerged Arc Welded (LSAW) kav[siv: 1, citation: 4, citation: 6, citation: 9]. Kev sib xyaw ua ke no yog cov khoom lag luam uas muab los ntawm ntau lub tuam txhab tsim khoom thoob ntiaj teb thiab nquag teev rau ntau yam kev xav tau ntawm cov qauv siv thiab engineering siv [citation: 2, citation: 3, citation: 5, citation: 7].
Nws yog ib qho tseem ceeb kom nkag siab tias "BS EN 10025 S355JR" yog hais txog tusqib 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 txias- tsim welded structural hollow seem, qhov twg cov yeeb nkab qib raug xaiv raws liS355JRH[siv: 2, citation: 5, citation: 8, citation: 9].
Ntawm no yog cov ncauj lus kom ntxaws specification rau BS EN 10025 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 tsis yog- alloy structural 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)[siv: 2, citation: 5, 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 yogS355JRH[siv: 2, citation: 5, citation: 8, citation: 9]. Lwm cov qauv khoom xws li EN 10217 (rau lub hom phiaj siab) kuj tseem siv tau [citation: 4, 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, 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. Cov txheej txheem no tau zoo- haum rau kev tsim cov kav loj - txoj kab uas hla nrog cov phab ntsa tuab [citation: 3, citation: 6, citation: 7, citation: 9]. |
| Tshuaj muaj pes tsawg leeg (max %) [citation:5, citation:8] | |
| Cov pa roj carbon (C): 0.22 | |
| Silicon (Si): 0.55 | |
| Manganese (Mn): 1.60 | |
| Phosphorus (P): 0.035 | |
| Sulfur (S): 0.035 | |
| Nitrogen (N): 0.009 | |
| Mechanical Properties (min) [citation: 2, citation: 5, citation: 7, citation: 8] | |
| Yield Strength (t Tsawg dua los yog sib npaug rau 16mm):355 MPa rau | |
| Yield Strength (16mm |
|
| Tensile zog:470-630 MPa | |
| Elongation: 20-22% | |
| Impact Properties [citation: 2, citation: 5, citation: 7, citation: 8] | Charpy V-notch Impact Energy:27 J yam tsawg kawg nkaus ntawm+20 degree |
| Hom Loj Ntau Yam [citation: 3, citation: 4, citation: 7, citation: 8, citation: 9] | |
| Sab nraud txoj kab uas hla:219mm txog 2500mm (kwv yees . 8" txog 98") | |
| Phab ntsa Thickness:5 hli txog 60 hli (txog 75-80 hli muaj los ntawm qee cov tuam ntxhab) | |
| Ntev:3 m txog 18.3 m (customizable, mus txog 100 m los yog ntau tshaj muaj rau piling daim ntaub ntawv) [citation: 1, citation: 9] | |
| Cov kauj ruam ntawm kev tsim khoom [citation: 3, citation: 6, citation: 9] | 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. |
| Cov ntawv thov sib xws [citation: 1, citation: 2, citation: 3, citation: 4, citation: 6, citation: 7, citation: 8, citation: 9] | Siab- nce lub tsev txhawb nqa kab; steel qauv ncej; choj loj kab teeb; cua zog yees; hnub ci zog brackets; piling foundations; tej yaam num offshore; machinery manufacturing; low-kev sib kis ntawm cov kua (dej, roj, roj); hnyav steel qauv. |
| Daim ntawv pov thawj | Mill Test Certificate feem ntau rauEN 10204 / 3.1[siv: 4, citation: 7, citation: 8, citation: 9]. |
Nkag siab txog Qib Qib
Lub npeS355JRH(rau cov yeeb nkab tiav) ua raws li cov qauv kev xav tau teev tseg hauv EN 10219 thiab EN 10025 [citation: 5, citation: 8]:
| 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) |
| H | Ntug Hollow(Ua raws li EN 10219) |
Qhov zoo ntawm S355JR LSAW Pipe
| Qhov zoo | Kev piav qhia |
|---|---|
| Siab zog | Yam tsawg kawg yield zog ntawm355 MPa rau- ntau dua li qib S275, tso cai rau cov phab ntsa nyias nyias lossis siab dua cov peev txheej hauv cov qauv tsim [citation: 2, citation: 7, citation: 8]. |
| Weldability zoo heev | Cov txheej txheem LSAW siv ntau-wire submerged arc vuam thev naus laus zis, uas ua rau muaj qhov siab- vuam zoo nrog qhov sib txawv ntawm qhov tob thiab qhov tsis yog- kev ntsuas kev puas tsuaj hla dhau99%[qhia: 3, citation: 7]. Tswj chemistry ua kom zoo weldability rau kev koom ua ke thiab fabrication. |
| 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: 5, citation: 7, citation: 8]. |
| Loj Loj Muaj peev xwm | LSAW txheej txheem tso cai rau kev tsim cov loj- txoj kab uas hla (txog 98 "+) nrog cov phab ntsa tuab (txog 75-80mm) zoo tagnrho rau kev tsim kho loj thiab kev tsim kho vaj tse [citation: 3, citation: 4, citation: 6, citation: 7, citation: 9]. |
| Zoo heev dabtsi yog khoov zog | Kev sib xyaw ua ke ntawm lub zog siab thiab zoo ductility ua rau nws zoo tagnrho rau hnyav-load, siab- kev ntseeg tau [citation:3, citation:8]. |
| High Pressure Resistance | Tsim nyog rau siab-cov kabmob tseem ceeb xws li cov kav dej thiab cov kav dej thiab cov cua tsim hluav taws xob. |
| Dimensional raug | Niaj hnub nimno JCOE thiab UOE tsim cov txheej txheem nrog txhua yam txoj kab uas hla kev nthuav dav thev naus laus zis muab kev tswj xyuas meej ntawm cov yeeb nkab qhov ntev (xws li, qhov tseeb ntawm qhov±0.1%D) [siv: 3, citation: 7]. |
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) [citation:5, citation:8]:
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 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[siv: 2, citation: 5, citation: 8, 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 S355JRH[npe: 2, citation: 4, citation: 5, citation: 8, citation: 9]. Cov tuam txhab loj sau npe S355JRH raws li tus qauv muab hauv lawv EN 10219 LSAW yeeb nkab ntau lawm [citation: 3, citation: 4, citation: 7, citation: 8, citation: 9].
Cov ntsiab lus
Hauv kev xaus,BS EN 10025 S355JR LSAW yeeb nkabyog ib qho zoo-tsim, siab- lub zog steel yeeb nkab uas sib txuas cov khoom txhim khu kev qha ntawm S355JR steel nrog cov txheej txheem tsim khoom LSAW. Nws yog feem ntau manufactured rau lubTS EN 10219khoom txheem raws liS355JRHthiab yog dav siv rau kev thov cov qauv, kev tsim kho, piling, thiab engineering daim ntaub ntawv uas yuav tsum tau muaj zog dua S275 [citation: 1, citation: 2, citation: 4, citation: 6, citation: 7, citation: 8, citation: 9]. Cov txheej txheem LSAW ua kom muaj cov kav dej loj - txoj kab uas hla nrog cov phab ntsa tuab, qhov tshwj xeeb vuam zoo, thiab qhov zoo ntawm qhov raug, ua rau nws tsim nyog rau cov phiaj xwm loj [citation: 3, citation: 6, citation: 7]. 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 S355JRH LSAW yeeb nkab).
