TEXTURE ELECTRIC STEEL SHEET AND METHOD OF ITS PRODUCTION Russian patent published in 2014 - IPC C21D8/12 H01F1/16 C23F1/02 

FIELD: metallurgy.

SUBSTANCE: steel sheet, 0.30 mm thick or less, comprises forsterite film and coat to create strain on steel sheet surface, liner grooves made at 2-10 mm spacing on sheet surface in direction of rolling for modification of magnetic domain. Note here that depth of every said groove makes 10 mcm or larger. Forsterite film thickness at linear groove bottom makes 0.3 mcm or larger. Total strain at steel sheet created by forsterite film and coat makes 10.0 MPa or higher in direction of rolling. Fraction of losses from eddy currents in steel sheet iron W_17/50 makes 65% or less in variable magnetic field of 1.7 Tl and 50 Hz created in sheet steel in direction of rolling.

EFFECT: lower losses in iron.

3 cl, 3 tbl, 1 ex, 2 dwg