Qhov kev cuam tshuam nyuaj ntawm Q235B yog ze ze rau qhov kub thiab txias, nrog nws cov kev txo qis txo raws li qhov ntsuas kub. Cov yam ntxwv tshwj xeeb thiab cov yam ntxwv muaj raws li hauv qab no:
1. Tus qauv txheej txheem kev sib raug zoo ntawm qhov kub thiab txias thiab cuam tshuam nyuaj
Raws li GB / T 700-2006, qhov cuam tshuam kev cuam tshuam rau Q235b tsuas yog yuav tsum tau ua ntawm chav tsev kub (20 degree), nrog rau ntau dua lossis sib npaug rau 27J. Qhov uas yuav tsum tau ua rau nws tsim qauv tsim kom muaj kev ua kom nruj ntawm chav sov, tsis yog thaum kub tsawg.
2. Cov nyhuv ntawm qhov ntsuas kub ntawm kev cuam tshuam ntawm kev cuam tshuam nyuaj
Nyob rau hauv chav tsev kub thiab siab dua (loj dua los yog sib luag rau 20 degree):
Nyob rau hauv qhov ntsuas kub no, Q235B qhov kev cuam tshuam nyuaj yog qhov ruaj khov, feem ntau yooj yim ntsib ntau dua lossis sib npaug rau 27J. Cov khoom siv ua pov thawj lub xeev yas, tab tom ua haujlwm tseem ceeb Hauv qab no 20℃(hauv qab chav sov):
Raws li qhov ntsuas kub tsawg, qhov kev cuam tshuam nyuaj ntawm Q235b maj txo qis:
Thaum qhov ntsuas kub me dua 20℃(piv txwv li, 0-10 degree), qhov kev hloov kho hauv lub zog, thiab qee qhov kev hloov pauv ntawm cov hlau tuaj yeem ua txoj kev txwv qis dua.
Thaum qhov kub poob ntxiv (piv txwv li, hauv qab -10℃txo qis, tej zaum qis dua 27J. Cov khoom tau nyias nyias nyias, thiab cov pob txha pob zeb maj mam txav los ntawm cov ductilt. Txij ntawm no, kev pheej hmoo ntawm brittle breacture nce thaum raug rau kev cuam tshuam cov khoom.
III. Kev sib piv nrog lwm cov qhab nia zoo (cuam tshuam cov sib txawv hauv qhov ntsuas kub hloov tau)
Hauv Q235 series, qib c thiab d muaj kev cuam tshuam tsawg dua (0}}}}}}}}} kub toughness. Txawm li cas los xij, txij li Q235B tsis muaj cov cai yuav tsum tau rau tsawg {8} {{{{{kub tsis tuaj yeem lav. Qhov no yog qhov tseem ceeb ntawm nws thiab qib C thiab D raws li daim ntawv thov cov xwm txheej ib puag ncig yuav tsum tau nyiam rau qhov chaw qis-kub).
Hauv cov ntsiab lus, qhov kev cuam tshuam nyuaj ntawm Q235B yog rhiab rau qhov kub. Thaum kev ua tau zoo tau lav nyob rau ntawm chav tsev kub, nws txo qis ntawm cov kub tsawg, nce txoj kev pheej hmoo ntawm brittleness. Yog li ntawd, hauv cov ntawv thov siv, nws yog ib qho tseem ceeb kom tsis txhob muaj nws los cuam tshuam cov nra ntawm tsis tshua muaj kub (tshwj xeeb tshaj yog hauv qab -10 degree).