| 摘要 |
<p>In the present invention, disclosed are an oriented electrical steel sheet which can secure excellent electromagnetic properties by controlling cooling speeds by carrying out air cooling or furnace cooling after a homogeneous heat treatment, and to a manufacturing method thereof. The method for manufacturing an oriented electrical steel sheet according to the present invention comprises: a hot rolling step (a) of groove rolling and cooling a steel slab composed of carbon (C), silicon (Si), and the remainder consisting of iron (Fe) and inevitable impurities; a cold rolling step (b) of pickling the cooled steel, and then attaching silica fabric onto a surface of the steel and cold rolling the steel; a homogeneous heat treatment step (c) of homogeneously heat treating the cold rolled steel and diffusing silicon inside the steel; and a step (d) of cooling the homogeneously heat treated steel through air cooling or furnace cooling.</p> |
