ELECTRIC STEEL SHEET Russian patent published in 2015 - IPC C21D8/12 C22C38/00 C21D9/46 H01F1/16 

FIELD: metallurgy.

SUBSTANCE: said sheet contains the following substances, in wt %: C - less than 0.010, Si - 1.5-10, Fe and incidental impurities making the rest. The steel sheet texture main orientation is <111>//ND while main orientation intensity-to-incidentally oriented specimen makes at least 5, preferably intensity-to-incidentally oriented specimen {111}<112> makes at least 10, and more preferably intensity-to-incidentally oriented specimen orientation {310}<001> makes not over 3, more preferably, Si concentration features the gradient. Thereat, said concentration is high at the surface ply side and low at the central part in direction of the depth. The maximum Si concentration makes at least 5.5 wt % while the difference between maximum and minim values makes at least 0.5 wt %.

EFFECT: improved properties of DC application of electric steel sheet in the core excited at high frequency.

7 cl, 3 tbl, 2 dwg