Dab tsi yog qhov tseem ceeb ntawm cov khoom siv hluav taws xob ntawm Q235 steel kauj (feem ntau siv hauv kev tsim kho)?
A: Lub zog muaj zog ntau dua lossis sib npaug ntawm 235 MPa (thickness Tsawg dua lossis sib npaug li 16 hli), tensile lub zog 370-500 MPa, elongation tom qab tawg ntau dua lossis sib npaug li 26% (thickness Tsawg dua lossis sib npaug li 40 mm), kev ua haujlwm txias txias zoo heev.
Yuav ua li cas thickness cuam tshuam rau txhua yam khoom ntawm Q235 steel kauj?
A: Raws li thickness nce, yield zog thiab elongation txo me ntsis:
16-40 mm: Yield Ntau dua lossis sib npaug rau 225 MPa, elongation Ntau dua lossis sib npaug li 25%;
＞ 150 mm: Yield Ntau dua lossis sib npaug rau 185 MPa, elongation Ntau dua lossis sib npaug li 21%.
Dab tsi yog qhov txias bending zog ntawm Q235 steel kauj? Dab tsi yog qhov yuav tsum tau ua rau kev tsim kho?
A: Rau longitudinal steel coil thickness Tsawg dua los yog sib npaug li 16 hli, dabtsi yog khoov mandrel txoj kab uas hla d=a; rau thickness > 16 hli, d=2a, tsis muaj kab nrib pleb tom qab khoov 180 degree, ua tau raws li qhov yuav tsum tau rau txias dabtsi yog khoov thiab tsim ntawm lub tsev Cheebtsam.
Dab tsi yog qhov weldability ntawm Q235 steel kauj? Dab tsi yuav tsum tau ceev faj thaum vuam hauv kev tsim kho?
A: Weldability zoo heev (tsawg carbon, tsis muaj impurities), haum rau arc vuam, submerged arc vuam, thiab lwm yam.; Q235A tsis haum rau cov qauv welded, thiab cov pa sib npaug yuav tsum tau tswj xyuas thaum vuam kom tsis txhob tawg.
Dab tsi yog qhov tseem ceeb ntawm kev cuam tshuam toughness ntawm Q235 steel coils rau kev ruaj ntseg hauv tsev?
A: Kev cuam tshuam toughness txiav txim siab tiv thaiv kev co thiab qis -kub nkig tawg. Qib B/C/D lav qhov cuam tshuam lub zog ntawm qhov sib txawv ntawm qhov kub thiab txias thiab yog cov cim tseem ceeb rau kev nyab xeeb ntawm lub tsev (tshwj xeeb tshaj yog nyob rau hauv dynamic loads thiab tsis kub).