| 摘要 |
<p>PURPOSE: A low-core loss electrical steel sheet manufacturing method is provided to obtain an electrical steel sheet with reduced loss of Eddy current and increased core efficiency by cladding a hot rolled steel sheet with Al-Si alloy. CONSTITUTION: A low-core loss electrical steel sheet manufacturing method comprises the steps of: hot rolling steel slab which comprises 2.0-4.0wt.% of Si, 0.02-2.0wt.% of Al, 0.1-0.7wt.% of Mn, and the remaining amount of Fe and inevitable impurities(S110), cladding the hot rolled steel sheet with Al-Si alloy(S120), winding the cladded steel sheet(S130), firstly annealing and pickling the wound steel sheet(S140), cold rolling the pickled steel sheet(S150), and finally annealing the cold rolled steel sheet(S160). [Reference numerals] (S110) Hot rolling step; (S120) Cladding step; (S130) Winding step; (S140) Initial annealing and pickling step; (S150) Cold rolling step; (S160) Final annealing step</p> |
