| 摘要 |
<p>Disclosed are a grain-oriented magnetic steel and a method for manufacturing the same. The method for manufacturing a grain-oriented magnetic steel is as follows: manufacturing a steel slab including 2.8-4.2 wt% of Si, 0.015-0.040 wt% of acid soluble Al, 0.01-0.20 wt% of Mn, 0.04-0.08 wt% of C, 0.0010-0.006 wt% of N, 0.0010-0.006 wt% of S, 0.03-0.07 wt% of Sn, 0.01-0.05 wt% of Sb, 0.01-0.05 wt% of P, 0.037-0.063 wt% of P+0.5Sb and remainder consisting of Fe and inevitable impurities; reheating the steel slab at a temperature range of 1400-70×Si <= Ts <= 1600-150×Si; hot-rolling the steel slab; omitting or performing annealing of the hot-rolled steel plate and cold-rolling the steel plate; and finally annealing the cold-rolled steel plate at the high temperature after decarbonization annealing and nitrocarbonization annealing. In the formula, Ts refers to the reheating temperature of the steel slab, and Si refers to wt% of silicon.</p> |
