ELECTRICAL STEEL PLATE WITH ORIENTED GRAINS Russian patent published in 2013 - IPC C22C38/12 C22C38/14 C21D8/12 

FIELD: metallurgy.

SUBSTANCE: plate is made from steel containing the following components, wt %: C 0.005 ore less, Si 10 to 8.0, Mn 0.005 to 1.0; one or more elements chosen from Nb, Ta, V and Zr; with that, their total content is 10 to 50 ppm, and Fe and inevitable impurities are the rest. At least 10% of Nb, Ta, V and Zr content is in the form of particles of the separated phase, the particles of which have average diameter, - diameter of equivalent circle - 0.02 to 3 mcm, and grains of a steel plate, which are recrystallised for the second time, have average size of 5 mm or higher.

EFFECT: reduction of deterioration of magnetic characteristics in case a plate is subject to shear as a result of the cutting process, even without performance of an annealing operation for release of stresses.

4 cl, 2 dwg, 3 tbl, 3 ex