Gewickelter Eisenkern und Verfahren zur Herstellung davon

Details

Veröffentlichungs-Nr.

EP4723148

Anmeldetag

31. Mai 2024

Veröffentlichung

5. Dezember 2024

Rechtsraum

EP

IPC

H01F27/245, H01F41/02

Abstract

A wound core 10 having a wound shape, formed by laminating bent steel sheets, in which, in a side view of the wound shape from a direction along the plane of the steel sheet, the wound core 10 has four plane parts 4 and four corner parts 3 adjacent to the plane parts 4, which together form a rectangular shape with a central hollow section 15, in which the steel sheet in each layer has at least one joint part 6 where the ends in the winding direction are butted together, in which the opposing steel sheet ends at the joint part 6 of the steel sheet in each layer have a gap therebetween, and in which, in a cross-section perpendicular to the plane of the steel sheet and along the winding direction, a tensile stress of 10 MPa or more is introduced in the thickness direction of the steel sheet at one or more locations in a predetermined region, the predetermined region being defined according to the positional relationship between the gap of an arbitrary steel sheet and the gap of a steel sheet laminated adjacent to the arbitrary steel sheet.

Anmelder

Firma

Nippon Steel Corporation

Land

🇯🇵 Japan

Fachgebiete