S355 JRthiab S355J0 tau siv dav hauv cov qauv hlau ua raws li EN 10025-2. Ob leeg qhia cov yam ntxwv zoo sib xws, suav nrog qhov tsawg kawg nkaus tawm lub zog ntawm 355 MPa, ua rau lawv muaj kev xaiv txhim khu kev qha rau cov qauv thauj khoom.
Txawm hais tias lawv qhov zoo sib xws, qhov sib txawv tseem ceeb nyob hauv qhov cuam tshuam qhov ntsuas kub ntawm qhov ntsuas kub, cuam tshuam los ntawm cov lus kawg JR thiab J0.
Kev sib piv tshuaj lom neeg
| Qib | C (%) | Si (%) | Mn (%) | P (%) | S (%) | Cu (%) | N (%) |
|---|---|---|---|---|---|---|---|
| S355 JR | ≤ 0.27 | ≤ 0.60 | ≤ 1.70 | ≤ 0.045 | ≤ 0.045 | ≤ 0.60 | ≤ 0.014 |
| S355J0 | ≤ 0.24 | ≤ 0.60 | ≤ 1.70 | ≤ 0.040 | ≤ 0.040 | ≤ 0.60 | ≤ 0.014 |
Faj seeb: S355J0 muaj me ntsis qis tshaj cov pa roj carbon, phosphorus, thiab sulfur, pab txhim kho toughness ntawm qis kub.
Mechanical Properties Sib piv
| Qib | Yield zog ReH (MPa, t ≤16mm) | Tensile zog Rm (MPa, 3-16 mm) | Elongation A (%) (3-40 hli) | Charpy V Impact Test | Kev ntsuas kub (°C) | Impact Zog (J) |
|---|---|---|---|---|---|---|
| S355 JR | 355 | 450–680 : kuv | 22 | Ntev | +20 | 27 |
| S355J0 | 355 | 450–680 : kuv | 22 | Ntev | 0 | 27 |
Qhov tseem ceeb sib txawv: Impact Test Temperature
Lub ntsiab lus nyob rau hauv qib kev xaiv qhia qhov tsawg kawg nkaus qhov ntsuas kub:
JR: Kev sim cuam tshuam ntawm +20°C
J0: Kev ntsuas cuam tshuam ntawm 0 ° C
Qhov sib txawv no txhais cov kev pab cuam qhov kub thiab txias:
S355JR steel: Zoo yoog mus rau qhov kub thiab txias dua thiab cov qauv kev tsim kho
S355J0 steel: Haum rau me ntsis txias txias, qhov twg 0 ° C cuam tshuam kev kuaj xyuas kom ductility thiab toughness
Ob qib tuav tib lub zog, elongation, thiab weldability, tab sis xaiv cov qib raug ua kom muaj kev nyab xeeb thiab kev ua haujlwm raws li qhov xav tau ntawm kev ua haujlwm kub ntawm cov qauv.
Q1: S355JR steel kab teeb yog dab tsi?
S355JR steel kab teeb yog cov khoom siv hlau ua raws li EN 10025-2. Qib S355JR qhia qhov tsawg kawg nkaus lub zog ntawm 355 MPa thiab cuam tshuam rau qhov hnyav ntawm chav sov, ua rau nws tsim nyog rau kev siv cov qauv siv dav dav.
Q2: Tus qauv twg siv rau S355JR steel beams?
S355JR steel beams yog tsim nyob rau hauv EN 10025-2, European tus qauv rau kub-dov structural steels. Cov txheej txheem no txhais cov tshuaj muaj pes tsawg leeg, cov khoom siv kho tshuab, cov kev ntsuas cuam tshuam, thiab kev xa khoom.
Q3: Dab tsi txhua yam khoom siv S355JR steel muaj?
S355JR steel feem ntau muab qhov tsawg kawg nkaus lub zog ntawm 355 MPa, lub zog tensile xws li kwv yees li 470 txog 630 MPa, thiab zoo elongation. Cov khoom no ua kom ntseeg tau tias muaj peev xwm thauj khoom -cov kabmob muaj peev xwm thiab kev nyab xeeb ntawm cov qauv.
Q4: Lub npe "JR" txhais li cas hauv S355JR?
Lub npe "JR" qhia tias cov hlau muaj qhov cuam tshuam tsawg kawg nkaus ntawm 27 J kuaj ntawm +20° C. Qhov no lees paub tias tsim nyog toughness rau cov qauv kev khiav hauj lwm nyob rau hauv ib txwm ambient kub tej yam kev mob.
Q5: S355JR piv nrog S275JR steel kab teeb li cas?
Piv nrog rau S275JR, S355JR muaj cov txiaj ntsig siab dua thiab lub zog tensile, tso cai rau txo qis qhov ntau thiab tsawg lossis siab dua lub peev xwm. Qhov no feem ntau ua rau qhov hnyav txuag thiab txhim kho kev ua haujlwm zoo.
Q6: Puas yog S355JR steel beam haum rau vuam?
Yog lawm, S355JR steel kab teeb pom kev zoo weldability vim tswj cov ntsiab lus carbon thiab qis carbon sib npaug (CE). Cov txheej txheem vuam txheej txheem tuaj yeem siv nrog cov txheej txheem vuam kom zoo thiab preheating thaum xav tau los ntawm tuab.
Q7: S355JR steel beams puas siv tau rau hauv kev sib txuas bolted thiab riveted?
S355JR steel kab teeb yog zoo haum rau bolted thiab riveted kev sib txuas. Lawv cov khoom siv kho tshuab ua kom ntseeg tau tias kev ua tau zoo nyob rau hauv cov khoom siv zoo li qub thiab muaj zog thaum ua raws li cov qauv tsim.
Q8: Dab tsi ntawm cov nqaj hlau feem ntau muab hauv S355JR?
S355JR yog dav muaj nyob rau hauv I-beams, H-beams, HEA, HEB, HEM sections, thiab universal beams. Muaj nyob ntawm qhov muaj peev xwm ntawm dov zeb thiab cov qauv hauv cheeb tsam.
Q9: Dab tsi yog daim ntawv thov ntawm S355JR steel beams?
S355JR steel beams feem ntau yog siv rau hauv cov tsev lag luam, cov qauv lag luam, txuas hniav, platforms, fais fab nroj tsuag, warehouses, thiab hnyav machinery thav duab uas yuav tsum tau muaj zog thiab kev ntseeg siab.
Q10: S355JR ua haujlwm li cas hauv qhov chaw qis - qhov kub thiab txias?
S355JR yog qhov tsim nyog rau qhov ntsuas kub ib puag ncig. Rau qhov qis- qhov kev pabcuam kub, cov qib xws li S355J0 lossis S355J2 raug pom zoo vim lawv cov kev cuam tshuam zoo dua ntawm qhov ntsuas kub qis dua.
Q11: Dab tsi saum npoo yog muab rau S355JR steel kab teeb?
S355JR steel beams feem ntau yog muab rau hauv qhov kub - dov, raws li - dov mob nrog zeb nplai ntawm qhov chaw. Ntxiv kev kho saum npoo xws li txhaj tshuaj blasting, priming, galvanizing, los yog pleev xim tuaj yeem siv tau raws li kev thov.
Q12: Ntev npaum li cas thiab qhov loj npaum li cas rau S355JR steel kab teeb?
S355JR steel beams feem ntau muab nyob rau hauv cov qauv ntev xws li 6 m, 12 m, los yog kev txiav txiav txiav - rau - ntev xaiv. Ntu qhov ntau thiab tsawg nyob ntawm seb hom beam thiab zeb ntau lawm.