| 摘要 |
PURPOSE: A method for manufacturing fully-processed non-oriented electrical steel sheets having low iron loss is provided to reduce electricity loss of iron core material for small scaled rotators adopted in motor and transformer by adding W and controlling final annealing condition/skin pass rolling condition properly. CONSTITUTION: In the manufacturing method of fully-processed non-oriented electrical steel sheets where a silicone steel slab comprising C 0.01wt.% or less, Si 2.0wt.% or less, Mn 1.0wt.% or less, Al 1.0wt.% or less, S 0.010wt.% or less, N 0.01wt.% or less, P 0.1wt.% or less, a balance of Fe, and inevitable impurities undergoes hot rolling, annealing, cold rolling, process annealing, and final annealing, the present invention is characterized in that W 0.02-0.50wt.% is contained in the silicone steel slab, and also the final continuous annealing is performed in the transformation temperature of 850 to Ac1 for 10sec-15min after temper rolling.
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