Nichtorientiertes Elektrostahlblech und Verfahren zur Herstellung davon

Details

Veröffentlichungs-Nr.

EP4715081

Anmeldetag

19. Dezember 2022

Veröffentlichung

25. März 2026

Rechtsraum

EP

IPC

C22C38/60

Abstract

A non-oriented electrical steel sheet includes by wt%, Si: 3.0 to 4.0%, Al: 0.1 to 1.5%, Mn: 0.1 to 0.5%, Cr: 2 to 20% of Mn content, a sum of Sn and Sb: 0.006 to 0.1%, C: 0.0010 to 0.0050%, and 0.0003 to 0.0050% of at least one of N, S, Ti, Nb, and V, and balance being Fe and unavoidable impurities, in which an area fraction of a grain having a grain diameter which is 10% or less of a thickness of the steel sheet is 0.5% or more, a number fraction of the grain is 20% or more, and an average grain diameter from a central layer to a surface layer in a thickness direction of the steel sheet satisfies a relationship of D(surface)/D(center) ≥ 0.6.

Anmelder

Firma

POSCO Co., Ltd

Land

🇰🇷 Südkorea