TEXTURED ELECTRICAL STEEL SHEET Russian patent published in 2017 - IPC C22C38/02 C21D8/12 

FIELD: metallurgy.

SUBSTANCE: invention relates to metallurgy, specifically to a sheet of textured electrical steel, used as material of iron core of a transformer and electric equipment. Sheet is made of steel ,chemical composition of which contains C: less than 0.005 wt% and Si: 2–5 wt%, and, optionally, Mn: 0.005–1.0 wt% and one or more elements, selected from Ni: 0.010–1.50 wt%, Cr: 0.01–0.50 wt%, Cu: 0.01–0.50 wt%, P: 0.005–0.50 wt%, Sn: 0.005–0.50 wt%, Sb: 0.005–0.50 wt%, Bi: 0.005–0.50 wt% and Mo: 0.005–0.100 wt%. Sheet has texture, where on distribution diagram of disorientation angle between orientation of crystals of secondary recrystallized texture and Goss orientation there are at least two peaks. Disorientation angle of second peak is 5–10°, and grain size of secondary recrystallized texture is not more than 15 mm.

EFFECT: high magnetic properties and low losses in core.

3 cl, 5 dwg, 3 tbl, 2 ex