S460N/Z35 steel phaj normalizing, European tus qauv siab zog phaj, S460N, S460NL, S460N-Z35 steel profile: S460N, S460NL, S460N-Z35 yog kub dov weldable zoo grain hlau nyob rau hauv ib txwm / ib txwm dov mob, qib S460 steel phaj thickness tsis ntau tshaj 200 hli.
S275 rau cov qauv hlau tsis yog hlau: EN10025-3, tus lej: 1.8901 Lub npe ntawm cov hlau muaj cov khoom hauv qab no: Tsab ntawv cim S: cov qauv hlau uas muaj feem xyuam rau qhov tuab tsawg dua 16 hli qhov muaj zog: qhov tsawg kawg nkaus qhov muaj zog Cov xwm txheej 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 loj me, cov duab, qhov hnyav thiab qhov sib txawv uas tso cai.
Qhov loj me, cov duab thiab qhov kev hloov pauv ntawm cov hlau phaj yuav tsum ua raws li cov kev cai ntawm EN10025-1 hauv xyoo 2004.
S460N, S460NL, S460N-Z35 xwm txheej xa khoom Cov phaj hlau feem ntau raug xa tuaj rau hauv qhov xwm txheej ib txwm lossis los ntawm kev dov ib txwm nyob rau hauv tib qho xwm txheej.
S460N, S460NL, S460N-Z35 Cov Tshuaj Lom Zem ntawm S460N, S460NL, S460N-Z35 hlau Cov tshuaj lom neeg sib xyaw (kev tshuaj xyuas yaj) yuav tsum ua raws li cov lus hauv qab no (%).
S460N, S460NL, S460N-Z35 cov tshuaj lom neeg yuav tsum tau ua: 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 tau raws li qhov yuav tsum tau ua ntawm cov lus hauv qab no: Cov khoom siv kho tshuab ntawm S460N (haum rau transverse).
S460N, S460NL, S460N-Z35 lub zog cuam tshuam hauv lub xeev ib txwm muaj.
Tom qab annealing thiab normalizing, cov hlau carbon tuaj yeem tau txais cov qauv sib npaug lossis ze li sib npaug, thiab tom qab quenching, nws tuaj yeem tau txais cov qauv tsis sib npaug. Yog li ntawd, thaum kawm cov qauv tom qab kev kho cua sov, tsis yog tsuas yog daim duab qhia theem carbon hlau xwb tab sis kuj tseem yuav tsum xa mus rau isothermal transformation curve (C curve) ntawm cov hlau.
Daim duab qhia txog cov hlau carbon theem tuaj yeem qhia txog cov txheej txheem crystallization ntawm cov hlau thaum txias qeeb, cov qauv ntawm chav tsev kub thiab qhov sib piv ntawm cov theem, thiab C nkhaus tuaj yeem qhia cov qauv ntawm cov hlau nrog qee yam sib xyaw hauv qab cov xwm txheej txias sib txawv. C nkhaus yog qhov tsim nyog rau cov xwm txheej txias isothermal; CCT nkhaus (austenitic txuas ntxiv txias nkhaus) yog siv rau cov xwm txheej txias txuas ntxiv. Mus rau qee qhov, C nkhaus kuj tseem siv tau los kwv yees qhov kev hloov pauv microstructure thaum txias txuas ntxiv.
Thaum lub austenite txias qeeb qeeb (sib npaug rau lub cub tawg txias, raws li pom hauv daim duab 2 V1), cov khoom hloov pauv ze rau qhov sib npaug ntawm cov qauv, uas yog pearlite thiab ferrite. Nrog rau qhov nce ntawm qhov txias, uas yog, thaum V3> V2> V1, qhov tsis txias ntawm austenite maj mam nce, thiab qhov ntau ntawm cov ferrite precipitated ua tsawg dua thiab tsawg dua, thaum qhov ntau ntawm pearlite maj mam nce, thiab cov qauv ua finer. Lub sijhawm no, me me ntawm cov ferrite precipitated feem ntau yog faib rau ntawm ciam teb noob.
Yog li ntawd, cov 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, ib qho me me ntawm network ferrite thiab troostite (qee zaum me me ntawm bainite tuaj yeem pom) tau precipitated, thiab cov austenite feem ntau hloov mus rau hauv martensite thiab troostite; Thaum tus nqi txias v5 tshaj qhov tseem ceeb ntawm tus nqi txias, cov hlau tau hloov mus rau hauv martensite tag nrho.
Qhov kev hloov pauv ntawm cov hlau hypereutectoid zoo ib yam li cov hlau hypoeutectoid, nrog qhov sib txawv tias ferrite precipitates ua ntej hauv qhov kawg thiab cementite precipitates ua ntej hauv qhov qub.
Lub sijhawm tshaj tawm: Lub Kaum Ob Hlis-14-2022
