Lub ntsiab sib txawv ntawm S355jr thiab S355j2 hlau yog tusKev Cuam Tshuam Sim KubCov. S3555jr raug sim rau tej yam nyuaj ntawm aChav Chav Kubntawm +20 degree, ua rau nws haum rau cov mob me, thaum s355j2 yuav tsum tau kuaj ntawm aSau - xoom kubntawm -20 degree, ua rau nws zoo dua rau ib puag ncig txias.
Ob qib kawm feem ntau tshwm sim meej lub zog ntawm 355 MPa tab sis muaj cov qib sib txawv ntawm-}} kub ua tau zoo.
Lub ntsiab sib txawv ntawm S355jr thiab S355j2 hlau yog tusKev Cuam Tshuam Sim KubCov. S3555jr raug sim rau tej yam nyuaj ntawm aChav Chav Kubntawm +20 degree, ua rau nws haum rau cov mob me, thaum s355j2 yuav tsum tau kuaj ntawm aSau - xoom kubntawm - 20 degree, ua rau nws zoo dua rau ib puag ncig txias. Ob Qib Qib Sib Koom Niaj Hnub Muaj Zog Ntawm Lub Zog Lub Zog Ntawm 355 MPa tab sis muaj cov kev ua tau sib txawv ntawm qhov tsawg-kub.
S355jr
Kev Ntsuas Cov Lus Kuaj: Tshuaj ntsuam xyuas ntawm +20 degree.
Daim Ntawv Thov: Haum rau cov kev siv cov kev thov me me hauv ib puag ncig me me, sov.
Kev ua tau zoo: tsis muaj qhov ua kom tiav qis - kub ua rau ntawm tus qib J2.
S355J2
Kev Ntsuas Qhov Kev Ntsuas: Ntsuas ntawm - 20 degree, xav tau ib qho kev sib tw v-motch cuam tshuam rau ntawm no txias txias.
Daim Ntawv Thov: Nyiam rau qhov chaw txias, Cheeb Tsam, Arctic Kev Siv, thiab lwm yam uas yuav tsum muaj superi-{xoom}} xoom.
Kev Ua Tau Zoo: Muaj kev yoog tau zoo dua rau tsawg - kub ua haujlwm tshaj li s355jr vim nws qhov kev sim siab qis dua.
Lub "J" hauv kev tsim qauv qhia tias cov hlau tau dhau ib qho kev sib tw Charpy tau qhia, thiab tus lej tom qab (R lossis 2) qhia txog qhov ntsuas kub uas tau ua tiav.
Thaum ob qib kawm muaj tsawg kawg cov txiaj ntsig muaj zog ntawm 355 MPa, tus qauv J2 muaj qhov ua tau zoo rau cov kev thov nthuav tawm.
Dab tsi yog qhov txawv ntawm J2 thiab JR? Puas yog lawv siv tau ua ke los hloov ib leeg?
J2thiabJRXa mus rau cov ntaub ntawv sub -}}}}}}}}}} ntawm cov khoom siv tawv tawv ntawm qhov kub.
J2yog cov khoom siv uas tsawg kawg nkaus27 Joulesntawm-20CthaumJRyog cov khoom siv uas tsawg kawg nkaus27 Joulesntawm+20C(chav sov).
A JRcov khoom siv yog ib txwm siv nyob rau hauv ib puag ncig sab hauv hos hos aJ2yog rau kev siv sab nraud.
Yog tias J2 yog xav tau koj yuav tsum tsis hloov JR.
Tshuaj lom neeg muaj pes tsawg leeg sib txawv ntawm S355JR thiab S355J2 Hlau:%
| Teem nqi | C | Si | Mn | P | S | CU | N |
| S355jr | 0.27 Max | 0.60 Max | 1.70 max | 0.045 Max | 0.045 Max | 0.60 Max | 0.014 max |
| S355J2 | 0.24 max | 0.60 Max | 1.70 max | 0.035 Max | 0.035 Max | 0.60 Max | 0.014 max |
Cov cuab yeej kho tshuab txawv ntawm S355jR thiab S355J2 Hlau:
| Teem nqi | Paib lub zog reh / (n / mm2) (t tsawg dua los yog sib npaug rau 16 hli) min | Tensile lub zog RM / (N / MM2) (3mm tsawg dua lossis sib npaug ntawm t tsawg dua lossis sib npaug rau 16 hli) | Elongation A /% (3mm tsawg dua lossis sib npaug rau t tsawg dua lossis sib npaug rau 40mm) min | Charpy V sim | |
| Kub / Qib | Kev Cuam Tshuam Lub Zog (Ntev) / j min | ||||
| S355jr | 355 | 450-680 | 22 | 20 | 27 |
| S355J2 | 355 | 450-680 | 22 | -20 | 27 |
Qhov sib txawv ntawm s355jr thiab s355j 2+ n steel
Qhov thib ob ntawm cov lus luv ntawm no tshwj xeeb hom qauv hlau qhia txog qhov muaj nuj nqis resilience. Resilience qhia tau tuskom muaj nuj nqis ntawm lub zog uas nqus tau los ntawm alloyThaum lub sij hawm tseem ceeb deformation txheej txheem. Hauv lwm lo lus, cov khoom muaj peev xwm nqus tau lub zog thiab ua kom tiv taus cov rog sab nraud uas tsis tawg.
S355jr steelmuaj lub zog tsawg kawg ntawm 27 J hauv qab 20-degree kub thaum ob hom hlau,S355J2+NMuaj tib yam cuam tshuam lub zog tab sis nrog qhov kub ntawm - 20 degrees. Hloov cov n qhia tias cov hlau tau dhau los ua cov txheej txheem ib txwm muaj, ua kom muaj zog ua kom zoo dua qub thiab ua kom muaj zog ua kom zoo dua qub
Uas xaiv, s355jr lossis s355j2?
Thaum xaiv ntawm S355jr thiab S355j2, nws yog qhov tseem ceeb kom nkag siab txog qhov sib txawv ntawm lawv cov khoom siv cov khoom siv thiab haum rau cov ntawv thov tshwj xeeb.
Kev Cuam Tshuam ToCness (Charpy V - notch kuaj):
S3555jr: Ntsuam xyuas ntawm 20℃nrog qhov tsawg kawg nkaus kev cuam tshuam kev cuam tshuam lub zog ntawm 27 Joules.
S3555j2: Ntsuas ntawm -20℃nrog qhov tsawg kawg nkaus cov kev cuam tshuam kev cuam tshuam lub zog ntawm 27 Joules, ua rau nws haum ntau rau kev mob txias. Qhov "J2" qhia tias nws tau muaj txiaj ntsig zoo dua ntawm cov kub kub.
Thov Kev Thov:
S3555jr: Siv cov ntawv thov kev tsim kho, kev tsim kho thiab ntaub thiab fabrication uas qhov chaw huab cua kub muaj nqhua.
S355J2: Nyiam rau cov haujlwm tshwm sim rau hauv qis dua qhov kub lossis cov kev cuam tshuam zoo dua hauv huab cua txias. Nws feem ntau tau xaiv rau cov qauv ntawm ntug dej, cov choj, thiab hnyav {{{{} txoj haujlwm hauv cov cheeb tsam txias.
Vuam thiab kev ua:
Ob qib tau zoo -} ruited rau vuam thiab muaj cov tshuaj ntse zoo thiab muaj peev xwm. S355j2 tej zaum yuav yog marginally yooj yim rau weld vim nws txoj kev txhim kho me ntsis.
Uas xaiv?
Txog kev thov hauv cov qauv lossis cov ntsuas kub me, qhov twg tus nqi yog qhov tseem ceeb, S355jr feem ntau txaus.
Rau cov ntawv thov nyob rau hauv cov huab cua txias lossis qhov uas cuam tshuam tawv yog qhov tseem ceeb, S355j2 yog qhov zoo dua.
Hauv cov ntsiab lus, cov kev xaiv yog nyob ntawm ib puag ncig cov xwm txheej thiab qhov muaj kev muaj zog.
4 ntau hom kev tsim kho steel los ntawm gnee steel
S460 siab - lub zog txheem hlau
S460 Siv cov hlau muaj lub zog siab - {{2} Qhov hnyav nyhav thiab feem ntau-}}}} Rose tsev. S460 tuaj yeem muab tau yooj yim los ntawm nws cov ntsiab lus ntawm cov roj carbon, muaj lub zog siab tensile thiab tuaj yeem tiv taus kub li -50oC.
S460 cov khoom siv muaj nyob rau hauv ob qhov sib txawv: S460NL thiab S460ML. S460NL yog tsim nrog cov khoom siv qub, hos S460ML tau ua los ntawm ib lub thermo {}}}} Cov txheej txheem kev tswj hwm (TMCP).
S460 steel peb muaj ntau yam thiab ntseeg tau, thiab tuaj yeem tsim nyob rau ntau qhov ntau thiab tsawg los ntawm 6mm rau peb metres dav thiab mus txog 12 meters nyob ntev.
S355 qauv hlau thiab phaj
S355 yog cov txheej txheem qib cov qauv hlau uas feem ntau siv hauv kev tsim kho thiab kev lag luam engineering. Coob tus ntawm S355 tus hlau yog muaj nyob ntawm MasteEE, tab sis peb tuaj yeem muab cov ntsiab lus ntawm S355JR, S355J2 / K {} n.
S3555JR muaj ib qho txiaj ntsig lub zog ntawm tsawg kawg 355n / hli2Thiab tau dhau los ntawm kev ntsuas Charpy cuam tshuam, uas piav qhia txog JR faib rau lub npe raws li kev xeem yog ua tiav ntawm 27J (Joules) ntawm chav tsev kub.
S355Aar muaj tib qho txiaj ntsig lub zog li S355jr, tab sis ar tsis tau txhais nws yog muag hauv 'raws li cov dej ntws.
S3555j2 / K2+ n yog tib cov hlau ua S355jr tab sis nws yog muab tso rau hauv qhov kev sim Charpy thiab tau tso tseg) ntawm -20oC.
Tej cov hlau uas tau muab los ntawm Charpy cuam tshuam lossis 'V' MotS kev xeem yuav muaj cov tsiaj ntawv 'J2', 'J2', 'J2,' J2, 'J2 lossis' J2, uas txhais tau tias lawv cov khoom muaj kev nruj.
S275 Txheej Txheem Qib Qib Hlau
S275 yog cov pa roj carbon qis uas nquag siv hauv kev txuas hniav thiab ntau- cov vaj tse. Nws tseem siv nyob rau hauv cov roj thiab roj kev lag luam nrog rau hauv cov tsheb uas yuav tsum tau nyob hauv cov tsheb thiab cov khoom siv hnyav.
Qhov tsawg kawg nkaus tau los lub zog ntawm S275 yog 275N / hli2, nws yog haum rau vuam thiab siv nyob rau hauv ntau ntawm cov kev siv kev siv. Ob txoj kev xaiv ntawm S275 Hlau yog: S275JR, uas tau raug rau kev sib cav sib ceg
S235 Txheej Txheem Steel Phaj
Muaj ntau ntau yam sib txawv ntawm S235 muaj, tab sis feem ntau nws tau muab los yog tsis kho lossis hauv qhov xwm txheej. S235 feem ntau yog siv los tsim cov khoom siv cov khoom uas tau siv hauv cov qauv hlau. Tsis yog tsuas yog lawv ntseeg tau muaj zog, tab sis lawv kuj yog tsim nyog rau vuam. Txawm li cas los xij, nws yog tsim nyog sau cia tias lub tensile lub zog ntawm s235 nthwv yog muaj qhov kub tshaj 600oC.
S235 yog feem ntau nquag muab khoom raws S235JR, raws li nws tau undergone kev sib yeem kev sib cav sib ceg ntawm chav tsev, thiab S235ar, uas tau muab rau 'raws li cov khoom siv dov'.