ORIENTED ELECTRICAL STEEL SHEET WHICH IS MORE PERFECT AS TO POWER LOSSES Russian patent published in 2010 - IPC C21D8/12 

FIELD: metallurgy.

SUBSTANCE: in oriented electrical steel sheet there obtained is the sheet subject to burning with continuous laser beam in order to create uniform deformation in direction of sheet width, which is perpendicular to the direction of rolling which is cyclic in direction of rolling and along the lines essentially perpendicular to direction of rolling; at that, in distribution of residual compression stress in rolling direction, which appears near individual point of deformation, in the section perpendicular to direction of the sheet width the value of residual compression stress in rolling direction, which is integrated in the section area in which there is residual compression stress, is 0.20 N to 0.80 N.

EFFECT: reduction of power losses.

2 cl, 2 tbl, 7 dwg, 2 ex