S460N / Z35 steel phaj normalizing, European txheem siab zog phaj, S460N, S460NL, S460N-Z35 steel profile: S460N, S460NL, S460N-Z35 yog kub dov weldable zoo grain steel nyob rau hauv ib txwm / li qub dov mob, qib S460 steel phaj thickness tsis ntau tshaj 200mm.
S275 rau non-alloy structural steel siv tus qauv: EN10025-3, tus naj npawb: 1.8901 Lub npe ntawm cov hlau muaj cov nram qab no: Symbol tsab ntawv S: structural steel thickness tsawg dua 16 hli yield zog tus nqi: yam tsawg kawg nkaus yield tus nqi xa khoom: N qhia tias qhov cuam tshuam ntawm qhov kub tsis tsawg dua -50 degrees yog sawv cev los ntawm tsab ntawv loj L.
S460N, S460NL, S460N-Z35 Qhov ntev, cov duab, qhov hnyav thiab qhov sib txawv tau tso cai.
Qhov loj, cov duab thiab qhov sib txawv ntawm cov hlau phaj yuav tsum ua raws li cov kev cai ntawm EN10025-1 hauv xyoo 2004.
S460N, S460NL, S460N-Z35 tus me nyuam raws li txoj cai Steel daim hlau feem ntau yog xa nyob rau hauv ib txwm mob los yog los ntawm ib txwm dov nyob rau hauv tib yam mob.
S460N, S460NL, S460N-Z35 Chemical Composition ntawm S460N, S460NL, S460N-Z35 steel Chemical composition (melting analysis) yuav tsum ua raws li cov lus hauv qab no (%).
S460N, S460NL, S460N-Z35 chemical muaj pes tsawg leeg yuav tsum muaj: Nb + Ti + V≤0.26;Cr+Mo≤0.38 S460N Melting Analysis Carbon Equivalent (CEV).
S460N, S460NL, S460N-Z35 Cov khoom siv kho tshuab Cov khoom siv kho tshuab thiab cov txheej txheem ntawm S460N, S460NL, S460N-Z35 yuav tsum ua kom tau raws li qhov xav tau ntawm cov lus hauv qab no: Cov khoom siv kho tshuab ntawm S460N (tsim rau transverse).
S460N, S460NL, S460N-Z35 cuam tshuam lub zog hauv lub xeev qub.
Tom qab annealing thiab normalizing, cov pa roj carbon steel tuaj yeem tau txais cov qauv sib npaug lossis nyob ze, thiab tom qab quenching, nws tuaj yeem tau txais cov qauv tsis sib npaug.Yog li ntawd, thaum kawm txog cov qauv tom qab kev kho cua sov, tsis tsuas yog cov hlau carbon theem daim duab tab sis kuj yog lub isothermal transformation nkhaus (C nkhaus) ntawm hlau yuav tsum raug xa mus rau.
Daim duab qhia txog cov hlau carbon theem tuaj yeem qhia cov txheej txheem crystallization ntawm cov hlau ntawm qhov txias txias, cov qauv ntawm chav tsev kub thiab qhov txheeb ze ntawm cov theem, thiab C nkhaus tuaj yeem qhia cov qauv ntawm cov hlau nrog qee yam muaj pes tsawg leeg nyob rau hauv qhov sib txawv txias txias.C nkhaus yog tsim rau isothermal txias tej yam kev mob;CCT nkhaus (austenitic nruam txias nkhaus) muaj feem xyuam rau cov cua txias tas mus li.Rau qee qhov, C nkhaus kuj tuaj yeem siv los kwv yees qhov hloov pauv microstructure thaum lub sijhawm txias tas mus li.
Thaum lub austenite txias maj mam (sib npaug rau qhov cub txias, raws li qhia hauv daim duab 2 V1), cov khoom hloov pauv yog ze rau cov qauv sib npaug, uas yog pearlite thiab ferrite.Nrog rau qhov nce ntawm qhov txias txias, uas yog, thaum V3> V2> V1, lub undercooling ntawm austenite maj mam nce, thiab tus nqi ntawm precipitated ferrite yuav tsawg thiab tsawg, thaum lub pearlite maj mam nce, thiab cov qauv ua finer.Nyob rau lub sijhawm no, ib qho me me ntawm precipitated ferrite feem ntau yog muab faib rau ntawm thaj tsam lis.
Yog li ntawd, tus qauv ntawm v1 yog ferrite + pearlite;Cov qauv ntawm v2 yog ferrite + sorbite;Lub microstructure ntawm v3 yog ferrite + troostite.
Thaum tus nqi txias yog v4, me me ntawm network ferrite thiab troostite (qee zaum ib qho me me ntawm bainite tuaj yeem pom) yog precipitated, thiab cov austenite feem ntau hloov mus rau hauv martensite thiab troostite;Thaum tus nqi cua txias v5 tshaj qhov tseem ceeb ntawm qhov txias txias, cov hlau tau hloov mus rau hauv martensite.
Kev hloov pauv ntawm cov hlau hypereutectoid zoo ib yam li cov hlau hypoeutectoid, nrog qhov sib txawv uas ferrite precipitates thawj zaug nyob rau tom kawg thiab cementite precipitates thawj zaug hauv lub qub.
Post lub sij hawm: Dec-14-2022
