Grain-oriented electrical steel sheet and method for manufacturing the same
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United States of America
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Jan 14, 2020
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Oct 29, 2015
app pub date -
Oct 29, 2013
filing date -
Oct 29, 2013
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Abstract
The present invention provides a grain-oriented electrical steel sheet with reduced iron loss over a wide range of sheet thickness by providing a grain-oriented electrical steel sheet with an actually measured sheet thickness t (mm) that includes a closure domain region extending linearly in a direction from 60° to 120° with respect to the rolling direction on a surface of the steel sheet, the closure domain region being formed periodically at a spacing s (mm) in the rolling direction, such that h≥74.9t+39.1 (0.26≥t), h≥897t−174.7 (t>0.26), (w×h)/(s×1000)≤−12.6t+7.9 (t>0.22), and (w×h)/(s×1000)≤−40.6t+14.1 (t≤0.22), where h (μm) is the depth and w (μm) is the width of the closure domain region.
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