Dab tsi yog qhov nyuaj ntawm Q235b?

Raws li cov roj carbon qauv hlau, Q235b lub hardness tsis yog qhov qhia tau tias yuav muaj zog, lub zog tensile, elongation, thiab tshuaj lom neeg). Txawm li cas los xij, hauv cov ntawv thov tiag tiag, cov kev ntxhib yuav tau txais los ntawm kev sim ua kom pom kev. Cov xwm txheej tshwj xeeb yog raws li hauv qab no:
1. Hardness Ntau yam ntawm txias - rolled q235b
Colding txias ua rau ua haujlwm hnyav hauv cov hlau, yog li lub hardness ntawm txias {}}}}} dua ib nyuag qib siab dua li tias ntawm kub {2} {rolled steel. Cov khoom tau yog:
Brinell Hardness (HB): 120-150 HB
Rockwell Hardness (HRB): 60-80 hrb
(Nco tseg: hardness tseem ceeb flucted me ntsis nyob ntawm tus nqi ntawm cov txias (piv txwv li, kev txo qis hauv siab dua.)
2. Kev siv tawv tawv ntawm kub - rolled q235b
Yog Q235B yog siv nyob rau hauv nws kub - rolled xeev (tsis muaj txias rolling), nws hardness yog qis dua, feem ntau:
Brinell Hardness (HB): 100-130 Hb
Rockwell Hardness (HRB): 50-70 HRB
III. Kev piav txog
Hardness yog ze rau kev ua lub xeev ua: txias dov (txias ua haujlwm tau txo nws (yog tias ib qho kev kawm softer txo nws (yog tias ib qho softer yog qhov xav tau, annealing tuaj yeem xaiv tau).
Tsis muaj tus qauv tsim nyog: GB / T 700 tsis qhia meej lub hardness ntawm Q235b. Cov kev ntseeg tau saum toj no yog ua raws li kev paub kev lag luam thiab yuav tsum txiav txim siab raws kev xeem tiag (uas tuaj yeem ua tau siv lub brinell lossis rockwell hardness tester).
Yog tias yuav tsum muaj kev nyuaj rau kev nyuaj rau cov khoom siv, nws yuav tsum pom zoo rau cov khoom lag luam lossis kev coj ua ntsuas thaum ntsuas thaum ua tiav.