Qhov kev pabcuam siab tshaj plaws yog dab tsi?
A: Tsawg dua lossis sib npaug li 350 degree; saum toj no, lub zog poob qis heev.
Dab tsi yog qhov qis - ntsuas kub rau txhua qib?
A:
A: Ntau dua lossis sib npaug rau +20℃(tsis cuam tshuam)
B: Ntau dua lossis sib npaug li 0 degree
C: Ntau dua lossis sib npaug li -10 degree
D: Ntau tshaj lossis sib npaug rau -20 degree
Dab tsi yog cov ntawv thov tseem ceeb ntawm Q235?
A:
Kev tsim kho: kab teeb, kab, steel qauv
Machinery: puag thav duab, brackets, tsis yog - qhov tseem ceeb
General: tank, kav, nkoj tsim, txuas hniav (Q235q)
Qhov txawv ntawm Q235 thiab Q345 yog dab tsi?
A:
Q235: 235 MPa rautawm los; tus nqi qis; kev siv
Q345: 345 MPa rautawm los; muaj zog dua; hnyav qauv
2 Qhov txawv ntawm Q235 thiab 45 # steel yog dab tsi?
A:
Q235: Tsawg carbon;zoo weldability; tsis muaj zog
45 #: nruab nrab carbon; Weldability tsis zoo; siab zog (quenched)