Patent ID: 6531001
Filing Date: 2003-03-11
Classification: C21D,H01F

Abstract:
A non-oriented magnetic steel sheet having a low iron loss and a high magnetic flux density, comprising:from about 1.5 to about 8.0 weight % silicon; from about 0.005 to about 2.50 weight % manganese; and not more than about 50 ppm of each of carbon, sulfur, nitrogen, oxygen, and boron; wherein a parameter  of a crystal orientation represented by an equation (1) is about 0.200 or less, &LeftAngleBracket;Î“&RightAngleBracket;=&Sum;j=1n&it;Vj&it;&Sum;i=1m&it;(uij2&it;vij2+vij2&it;wij2+wij2&it;uij2)/m,(1)in which (uij, vij, wij) is an ith vector (i=1,2, . . . m; j=1,2, . . . n; uij2+vij2+wij2=1) which is obtained from a crystal grain j having a crystal orientation represented by (hkl), and which is parallel to a direction inclined 90Ã—i/(mâˆ’1) degrees on a rolled surface from a rolled direction to a direction perpendicular thereto, and Vj is an areal ratio of the crystal grain j to the total area of measured crystal grains.