Cold-rolled silicon steel sheet for power transformer

The utility model discloses a cold-rolled silicon steel sheet for a power transformer, and relates to the technical field of power transformers. Comprising an E-shaped silicon steel sheet group formed by superposing a plurality of E-shaped silicon steel sheets and an I-shaped silicon steel sheet group formed by superposing a plurality of I-shaped silicon steel sheets, after the E-shaped silicon steel sheet group and the I-shaped silicon steel sheet group are combined together, first clamping sleeves are respectively arranged at the splicing parts on the two sides, and a second clamping sleeve is arranged at the splicing part in the middle; the E-shaped silicon steel sheet comprises a transverse steel sheet, a central foot and two side feet, one end, far away from the transverse steel sheet, of the central foot is provided with a first convex part, and one ends, far away from the transverse steel sheet, of the two side feet are respectively provided with a first concave part; second protruding parts are arrang