Pile riveted inserting iron core

The utility model relates to a pile riveted inserting iron core, relating to an iron core of electric element, a shaped steel plate (1) by shearing and punching is folded into the left half part (3) of the iron core while a shaped steel plate (2) by shearing and punching is folded into the right half part (4) of the iron core, the butt-joint surface (7-1) on one side (7) of an iron yoke of the iron core is provided with a groove (7-2), a convex platform (7-4) matching with the groove (7-2) is connected with the butt-joint surface (7-3) on the other side of the iron yoke (7) of the iron core, the convex platform (7-4) and the groove (7-2) can match one another tightly to connect the left half part (3) with the right half part (4) fixedly. The iron core has the advantages that the iron loss is small, the secondary paint spraying process on the iron core butt-joint location is not needed, the circuit at the iron core connecting location is smooth without short circuit, the fabrication process is simple, the environment pollution is not caused, the labor intensity of worker is low, etc.