Q: Dab tsi "Q" thiab "235" sawv cev rau Q235?
A: Q sawv cev rau lub zog tawm los, thiab 235 qhia tias tus qauv yield zog tus nqi yog 235 MPa.
Q: Lub teb chaws tus qauv twg Q235 ua raws?
A: Nws ua raws li GB / T 700-2006 "Carbon Structural Steel".
Q: Dab tsi yog cov qib zoo ntawm Q235? Dab tsi yog qhov tseem ceeb sib txawv?
A: Muaj plaub qib: A, B, C, thiab D. Qhov sib txawv yog nyob rau hauv cov kev xeem cuam tshuam: A: tsis muaj kev xeem; B: 20 degree cuam tshuam kev xeem; C: 0℃cuam tshuam kev xeem; D: -20℃cuam tshuam kev xeem. Txhua qib muaj kev cuam tshuam lub zog loj dua lossis sib npaug ntawm 27J, thiab cov ntsiab lus ntawm cov sulfur thiab phosphorus txo qis zuj zus nrog txhua qib.
Q: Txoj kev deoxidation rau Q235 yog dab tsi? Cov cim yog dab tsi?
A: Muaj peb hom: rimmed steel (F), tua steel (Z), thiab tshwj xeeb tua steel (TZ). Z thiab TZ tuaj yeem raug tshem tawm; Piv txwv li, Q235B defaults tua hlau. Q: Cov tshuaj muaj pes tsawg leeg ntawm Q235 yog dab tsi?
A: Cov pa roj carbon 0.14% ~ 0.22%, Manganese 0.30% ~ 0.65% (Qib A thiab B) / 0.30% ~ 0.80% (Qib C thiab D), Silicon Tsawg dua lossis sib npaug 0.30%, Phosphorus Tsawg dua lossis sib npaug ntawm 0.045% (A40% ur), 0. 0.050% (A thiab B) / 0.040% (C thiab D).