Thaum muab piv rau qhov qis - kub cuam tshuam nyuaj ntawm Q3555555555555555555555555555555566 6}} xoom} XOOM cua sov. Qhov kev sib txawv ntawm qhov sib txawv ntawm lawv cov qauv kev xav tau thiab cov qauv tsim qauv tsom xam, raws li cov ncauj lus kom ntxaws hauv qab no:
1. Cov kev cuam tshuam zoo rau cov kev xav tau
Q355NY (GB / T 4171-2008 / 2023)
Raws li teev nyob rau hauv Suav cov qauv, Q355Snh yog feem ntau ntsuas rau kev cuam tshuam nyuaj ntawm0 QibCov. Qhov tsawg kawg nkaus yuav tsum tau ua charpy v - negts cuam tshuam lub zog (KV2) ntawm qhov kub no yogNtau dua los yog sib npaug rau 40 jCov. Feem ntau, cov qauv Suav teb tsis yuam kom muaj txiaj ntsig zoo heev rau qhov kub qis (piv txwv li-5 degree) rau cov qhab nia ntawm Q355NH. Thaum qee cov tuam ntxhab yuav muab kev ntsuam xyuas txias rau hauv qis dua qhov kub, qhov no tsis yog cov kev xav tau ntawm cov neeg tsim khoom.
S3555j0wp (EN 100-5: 2019)
Under European standards, S355J0WP is designed with stricter low-temperature performance criteria. Nws cov hauv paus yuav tsum muaj xws li Charpy tsawg kawg v - negch cuam tshuam lub zog ntawmNtau dua los yog sib luag rau 27 j ntawm 0 degree, tab sis tseem ceeb, nws kuj yog cov cim tau lees tias ua tau zoo ntawm-20 degree, qhov twg cov kev cuam tshuam lub zog (kv2) nyobNtau dua los yog sib npaug rau 27 jRau feem ntau cov qhab nia. Qhov kev qhia tshwj xeeb tsawg - kub} kub ua kom muaj kev sib txuam nyuaj txawm tias nyob rau hauv cov kev mob sab hauv hauv cov huab cua txias.
2. Cov tswv yim kev ua tau zoo hauv qis -} qhov chaw ib puag ncig
Ntawm 0 degree: Q355NT TAM SIM NTAWCH ua tau raws ntau dua qhov cuam tshuam tsawg kawg nkaus (40 j vs {{ Qhov no tuaj yeem ua tau zoo rau cov ntawv thov uas kub tsis tshua tau poob qis dua, xws li nyob rau hauv cov dej siab npau taws.
Hauv qab no 0℃(piv txwv li, -20 degree): Ntawm no, S3555J0WP nce ib lub ntsej muag ntshiab. Since Q355NH lacks standardized requirements for sub-zero impact toughness, its performance at -20℃is not guaranteed and may degrade significantly-some tests show impact energy dropping below 27 J, increasing the risk of brittle fracture in structural components. Nyob rau hauv sib piv, S3555J0WP tus qauv ua kom muaj kev tswj hwm uas muaj kev tswj hwm qis, ua rau cov chaw nyob sab qaum teb, ua rau thaj chaw tseem ceeb, lossis cov haujlwm tsim kho lub caij ntuj no.
3. Cov khoom muaj pes tsawg leeg thiab microstructure cuam tshuam
Lub divergence nyob rau hauv qis - kub muaj qee yam kub tshwm sim los ntawm qhov sib txawv ntawm kev tso ua ke thiab kev ua tiav. S3555j0wP feem ntau suav nrog kev tswj hwm tev los ntawm cov qauv siv hluav taws xob zoo li Niobium (NB) lossis vanadium (NB) Q355, thaum ntsib nws cov qauv yuav tsum tau ua, feem ntau muaj cov nyiaj pub rau impurities thiab tsawg dua ntawm microalloying rau huab txias tsis kam.
