Kornorientiertes Elektromagnetisches Stahlblech und Verfahren zur Herstellung davon

Details

Veröffentlichungs-Nr.

EP4741523

Anmeldetag

4. Juli 2024

Veröffentlichung

9. Januar 2025

Rechtsraum

EP

Abstract

This grain-oriented electrical steel sheet includes a base steel sheet, a forsterite film optionally formed on the base steel sheet, and an insulating coating formed on the base steel sheet or the forsterite film. In a case where the base steel sheet has a plurality of grooves extending in a direction intersecting a rolling direction, a direction in which the plurality of grooves extend is defined as a longitudinal groove direction, a distance in the groove from an imaginary line that is an extension of a surface of the base steel sheet to the groove, along a straight line from the imaginary line in the sheet thickness direction of the base steel sheet, is defined as a groove depth, a width of the groove in the rolling direction is defined as a groove width, a position where the groove depth is 0.0 µm is defined as an end of the groove, and a 5 mm region from the end of the groove toward a center portion in the longitudinal groove direction is defined as an end portion of the groove, depths of the groove and widths of the groove at a plurality of positions in the end portion of the groove satisfy a predetermined relationship.

Anmelder

Firma

Nippon Steel Corporation

Land

🇯🇵 Japan