METHOD FOR MANUFACTURING HOT ROLLED STEEL PLATE AND HOT ROLLED STEEL SHEET

摘要

According to an embodiment of the present invention regarding a method for manufacturing a hot-rolled steel plate, a steel slab including: 0.04-0.07 wt% of C; 0.01-0.1 wt% of Si; 1.1-1.7 wt% of Mn; 0.01-0.05 wt% of Al; 0.09-0.13 wt% of Ti; 0.09-0.13 wt% of Mo; 0.005-0.015 wt% of P; S 0.005% or below; N 0.005% or below; the rest of Fe and other unavoidable impurities, is hot-rolled at finishing hot-rolling temperatures ranging from 875 to 895°C, and is winded at temperatures ranging from 420 to 445°C.