Yuav ua li cas xaiv EN10056 EN10204 S235JR S355J0 S355J2 Lub kaum ntse ntse sib npaug

S235JR lub kaum sab xis steelyog ib qho uas tsis yog - alloy structural steel lub kaum sab xis tsim raws li EN 10025-2, muaj qhov tsawg kawg nkaus tawm lub zog ntawm 235 MPa rau thicknesses txog 16 hli.

Qhov kev xaiv "JR" qhia tau hais tias cov khoom tau dhau los ntawm Charpy V-qhov ntsuas qhov cuam tshuam ntawm +20℃nrog qhov tsawg kawg nkaus absorbed zog ntawm 27 J, ua rau nws tsim nyog rau kev siv cov qauv hauv ib puag ncig kub.

Nrog lub zog tensile ntawm 360-510 MPa thiab elongation feem ntau ntau dua los yog sib npaug li 26% (thin seem), S235JR lub kaum sab xis steel muaj cov khoom zoo heev thiab kev tsim, ua kom yooj yim khoov, txiav, drilling, thiab vuam. Nws cov ntsiab lus carbon tsawg ua kom zoo heev weldability yam tsis tas yuav tsum tau preheating nyob rau hauv feem ntau fabrication txheej txheem, uas yuav pab txo tau kev tsim kho thiab ua nqi.

S235JR lub kaum sab xis steel yog dav siv nyob rau hauv lub tsev thav duab, steel qauv, platforms, brackets, warehouse shelving, thawv racks, thiab lub teeb muaj kev pab txhawb nqa, qhov twg muaj zog muaj zog, txhim khu kev qha toughness, thiab tus nqi - yuav tsum tau muaj kev ua tau zoo.

S355J0 lub kaum sab xis steel yog siab - lub zog steel lub kaum sab xis qib raws li EN 10025-2, tsim los rau cov ntawv thov uas yuav tsum muaj peev xwm thauj khoom ntau dua li S235JR. Nws muaj qhov tsawg kawg nkaus tawm lub zog ntawm 355 MPa thiab lub zog tensile ntau ntawm 470-630 MPa, muab kev ua haujlwm zoo dua qub.

Lub npe "J0" txhais tau hais tias cov hlau raug kuaj rau qhov cuam tshuam ntawm qhov hnyav ntawm 0 degree, nrog rau qhov cuam tshuam tsawg kawg nkaus ntawm 27 J, kom ntseeg tau tias kev ua tau zoo hauv qhov chaw txias dua lossis cov qauv sab nraum zoov raug rau lub caij ntuj sov hloov pauv.

Piv nrog S235JR, S355J0 tso cai rau kev txo qhov hnyav ntawm cov qauv tsim thaum tuav tib lub peev xwm, txhim kho cov khoom siv tag nrho.

S355J0 lub kaum sab xis steel feem ntau yog siv rau hauv cov tsev lag luam, cov tsev sib kis, hnyav- cov haujlwm ua haujlwm, cov khoom siv sab nrauv, kev txhawb nqa tshuab, thiab cov phiaj xwm kev tsim kho vaj tse, tshwj xeeb tshaj yog qhov muaj zog dua thiab qis - qhov kub thiab txias yuav tsum muaj.

S355J2 lub kaum sab xis steel sawv cev rau qib siab toughness ntawm peb qib no thiab tau siv dav hauv kev thov cov qauv siv. Nws ua raws li EN 10025-2 thiab muaj qhov tsawg kawg nkaus tawm lub zog ntawm 355 MPa, ua ke nrog kev ua tau zoo ntawm kev ua tau zoo ntawm -20 degree, qhov twg nws ua tiav qhov tsawg kawg nkaus lub zog ntawm 27 J.

Ua tsaug rau nws qhov qis - qhov kub thiab txias tsis kam, S355J2 lub kaum sab xis steel yog tshwj xeeb tshaj yog haum rau cov cheeb tsam txias, cov qauv sab nrauv, cov phiaj xwm cua fais fab, txuas hniav, thiab cov khoom siv engineering hnyav. Nws lub zog tensile ntawm 470-630 MPa thiab tswj cov tshuaj muaj pes tsawg leeg muab qhov zoo sib npaug ntawm lub zog, toughness, thiab weldability.

S355J2 lub kaum sab xis steel feem ntau tau teev tseg rau qhov tseem ceeb ntawm cov khoom thauj-cov kabmob uas cov npoo kev nyab xeeb yog nruj thiab nkig puas yuav tsum raug txo kom tsawg, ua rau nws yog cov khoom nyiam rau cov haujlwm xa tawm thiab cov qauv kev lag luam thoob ntiaj teb.

Hauv cov haujlwm ua tau zoo, S235JR feem ntau yog xaiv rau kev tsim kho thiab kev siv lub teeb pom kev zoo uas tswj tus nqi tseem ceeb. S355J0 yog haum rau nruab nrab - mus rau - hnyav structural designs, tshwj xeeb tshaj yog rau sab nraum zoov los yog me ntsis txias ib puag ncig. S355J2, nrog nws qhov zoo tshaj qhov qis- qhov kub thiab txias, yog qhov zoo tagnrho rau kev nyab xeeb hnyav, cov haujlwm sab nrauv, thiab kev nyab xeeb- cov qauv tseem ceeb.

Los ntawm kev muab S235JR, S355J0, thiab S355J2 lub kaum sab xis steel nyob rau hauv ntau qhov loj, cov neeg siv khoom tuaj yeem xaiv tus nqi ntau tshaj - qib zoo thiab tsim nyog raws li qhov xav tau ntawm kev thauj khoom, kev pabcuam kub, thiab cov qauv tsim.

Hu rau tam sim no

1. S355J2 steel yog dab tsi?
S355J2 yog qib tsis yog- alloy structural steel qib tau teev tseg hauv EN 10025-2. "S" qhia txog cov qauv hlau, "355" yog hais txog qhov tsawg kawg nkaus tawm lub zog ntawm 355 MPa, thiab "J2" qhia txog Charpy cuam tshuam qhov yuav tsum tau ua ntawm qhov kub thiab txias.

2. J2 txhais li cas hauv S355J2?
Lub npe J2 txhais tau hais tias cov hlau yuav tsum ua tiav qhov cuam tshuam tsawg kawg nkaus ntawm 27 Joules ntawm −20 degree. Qhov no ua rau S355J2 haum rau cov qauv raug rau qhov txias lossis qis qis - qhov kub thiab txias.

3. Qhov tsawg kawg nkaus tawm lub zog ntawm S355J2 yog dab tsi?
S355J2 muaj qhov tsawg kawg nkaus tawm lub zog ntawm 355 MPa rau thicknesses txog 16 hli. Raws li thickness nce, lub guaranteed yield zog yog txo raws li EN 10025-2.

4. Lub zog tensile ntawm S355J2 yog dab tsi?
Lub zog tensile ntawm S355J2 feem ntau yog li ntawm 470 txog 630 MPa, muab siab load-cov kabmob muaj peev xwm thiab kev ntseeg tau zoo.

5. Dab tsi yog cov khoom siv kho tshuab ntawm S355J2?
S355J2 sib xyaw ua ke cov khoom muaj zog, zoo elongation, thiab txhim khu kev qha cuam tshuam rau qhov kub thiab txias, ua rau nws tsim nyog rau kev thov cov qauv siv.

6. Puas yog S355J2 haum rau kev siv qis - kub?
Yog lawm. Vim nws tau lees paub qhov kev ua tau zoo ntawm −20 degree, S355J2 feem ntau yog siv rau hauv cov huab cua txias thiab cov ntawv thov uas yuav tsum tau txhim kho toughness piv rau JR lossis J0 qib.

7. Cov tshuaj muaj pes tsawg leeg ntawm S355J2 yog dab tsi?
S355J2 yog qis- carbon hlau alloyed feem ntau nrog manganese thiab silicon. Tswj qib ntawm phosphorus thiab sulfur kom zoo toughness thiab weldability.

8. Puas yog S355J2 yooj yim rau vuam?
Yog lawm. S355J2 muaj qhov zoo weldability siv cov txheej txheem vuam xws li MIG, MAG, TIG, thiab phau ntawv arc vuam. Preheating feem ntau tsis tas yuav tsum tau rau cov ntu nyias, tab sis tej zaum yuav raug pom zoo rau cov phaj tuab los yog txias.

9. S355J2 puas tuaj yeem txias-tsim lossis kub- tsim?
S355J2 muaj qhov txias txias zoo - tsim cov khoom thiab tuaj yeem khoov lossis dov yam tsis muaj tawg. Kub sib sau kuj tseem ua tau thaum tswj qhov kub thiab txias thiab ua raws li cov txheej txheem.

10. Cov ntaub ntawv khoom twg muaj nyob hauv S355J2?
S355J2 yog nkag rau hauv daim hlau, nplooj ntawv, kab teeb, raws, cov ces kaum, hollow seem, thiab lwm yam qauv profiles.

11. Dab tsi yog cov kev siv ntawm S355J2 steel?
Cov ntawv thov ib txwm muaj xws li txuas hniav, siab- cov tsev nce siab, cov qauv hauv ntug dej hiav txwv, cranes, cov tshuab hnyav, cua turbine yees, thiab cov qauv hlau hauv cov cheeb tsam txias.

12. S355J2 piv nrog S355JR li cas?
S355J2 muaj qhov zoo dua qis-kub qhov cuam tshuam toughness dua S355JR. Thaum ob qib muaj lub zog zoo sib xws, S355J2 yog qhov nyiam rau cov ntawv thov kom muaj kev nyab xeeb zoo dua hauv qhov chaw txias dua.

13. Puas yog S355J2 corrosion-resistant?
S355J2 tsis muab qhov muaj zog tiv thaiv corrosion. Kev tiv thaiv xws li kev pleev xim, galvanizing, los yog txheej yog yuav tsum tau rau sab nraum zoov lossis corrosive ib puag ncig.

14. Cov qauv twg thiab qhov sib npaug uas cuam tshuam nrog S355J2?
S355J2 feem ntau piv nrog ASTM A572 Qib 50 thiab lwm yam siab - lub zog steels, txawm tias qhov sib npaug yog nyob ntawm qhov project specifications.