Hom kev xa khoom?
Kub- dov (AR): Tus nqi qis, tsim nyog rau Tsawg dua lossis sib npaug li 16 hli, chav tsev kub thiab tsis tshua muaj siab.
Normalized (N): Uniform nplej, zoo toughness, haum rau tuab daim hlau / tsis kub.
Tswj dov (TMCP): Sib npaug zog thiab toughness, feem ntau siv rau nruab nrab thiab tuab daim hlau.
Puas yuav tsum tau kuaj xyuas qhov tsis zoo?
Cov qauv tseem ceeb yuav tsum tau kuaj xyuas qhov tsis zoo:
UT (Ultrasonic Testing): Feem ntau siv, Chav I/II/III.
MT (Magnetic Particle Testing): Nto/ze- defects. Cov hlab ntsha siab feem ntau xav tau 100% UT II qib.
Z-cov khoom taw qhia yog dab tsi?
Thickness-direction resistance to lamellar tearing, for welded joints in thick plates (>40mm):
Z15: Txo ntawm cheeb tsam Ntau dua lossis sib npaug li 15%
Z25: Ntau dua lossis sib npaug li 25%
Z35: Ntau dua lossis sib npaug li 35%.
Dab tsi kub hauv qab -100℃nws tuaj yeem siv tau?
Q345D: -20℃(feem ntau siv tsis tshua muaj kub)
Q345E: -40℃(qhov chaw txias heev).
Lub weldability zoo li cas?
Zoo, tsis tshua muaj carbon sib npaug (Ceq≈0.42%), cov pa vuam rods (E50 series) txaus, tab sis cov phaj tuab yuav tsum tau preheating los tiv thaiv kev tawg.