Los tiv thaiv kev qaug zog ntawm High-rise Steel Phaj

Q345GJB yog ib hom kev sib tsoo cov cuab yeej steel; caij nplooj ntoos hlav steel; Z-kev taw qhia steel. Feem ntau hais lus, nws feem ntau yog siv hauv cov tsev siab siab, thiab feem ntau yog siv los ua cov qauv hlau. Nws kuj tseem siv tau los ua cov khoom siv pwm thiab cov khoom siv.
Gaojian steel muaj lub zog siab, zoo qaug zog tiv thaiv; siab toughness thiab tsawg brittle hloov kub; zoo txias forming kev ua tau zoo thiab vuam kev ua tau zoo; zoo corrosion kuj thiab qee yam hnav tsis kam. Lub zog siab, tshwj xeeb tshaj yog nyob rau hauv normalized lossis normalized ntxiv rau lub xeev tempered nrog cov khoom siv kho tshuab siab. Kev sim kev tshawb fawb ntawm cov ntaub ntawv steel nrog lamellar tearing xwm txheej qhia tau hais tias qhov txo qis ntawm cheeb tsam hauv cov thickness kev taw qhia feem ntau qis dua 15 feem pua. Feem ntau, cov phaj tuab tuab yog feem ntau ua rau lamellar tearing. Qhov tuab ntawm cov hlau phaj, qhov ntau uas tsis yog-metallic inclusion defects, lub thicker lub weld, thiab ntau dua qhov vuam kev nyuaj siab thiab deformation. Txhawm rau tiv thaiv qhov tshwm sim tsis tu ncua ntawm lamellar tearing, Wugang coj tus thawj coj hauv kev tsim cov phaj steel nrog kev ua haujlwm siab hauv cov kev taw qhia tuab, thiab seem shrinkage tus nqi hauv Z kev taw qhia yog siab dua 15 feem pua. Kev nyab xeeb ntawm steel qauv kev tsim kho yog ib qho tseem ceeb heev, thiab muaj cov kev cai tshwj xeeb rau cov hlau siv. Los ntawm kev siv cov rooj sib tham hauv tsev siab, nws tuaj yeem hloov kho thiab txhawb nqa lub tsev; nyob rau hauv cov kev taw qhia ntawm high-rise thiab loj-span txoj kev loj hlob, nws muaj peev xwm txo qhov hnyav ntawm cov qauv, txo cov nqi tsim khoom, txo cov thickness ntawm steel qauv cov ntaub ntawv, thiab txhim kho nws manufacturing kev ntseeg tau. Cov hlau siv hauv cov tsev siab siab yog raug rau cov kev ntxhov siab nyuaj, thiab yuav tsum muaj kev nyab xeeb thiab kev ntseeg siab, lub neej ua haujlwm ntev, thiab muaj peev xwm tiv taus kev puas tsuaj ntawm qee qhov kev siv seismic, uas txiav txim siab tias cov hlau phaj siv nyob rau hauv lub tsev siab siab. cov qauv xav tau qee yam haujlwm tshwj xeeb.