US 2026/0185178 A1Published application

Electrical steel sheet with insulating coating

AssigneeJfe Steel Corporation

InventorsChuei WAKASUGI, Naoki MURAMATSU, Takeshi MATSUDA

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Abstract

Provided is an electrical steel sheet with an insulating coating that suppresses cracking of the insulating coating after stress relief annealing and has excellent sticking resistance. The electrical steel sheet with an insulating coating includes an electrical steel sheet and an insulating coating formed on at least one surface of the electrical steel sheet. The insulating coating contains Zr and Mn, and a mass ratio Mn/Zr in the insulating coating is from 0.010 to 0.100.

Claims10

Dependent claims

An electrical steel sheet with an insulating coating,

comprising an electrical steel sheet and an insulating coating formed on at least one surface of the electrical steel sheet, wherein
the insulating coating contains Zr and Mn, and a mass ratio Mn/Zr in the insulating coating is from 0.010 to 0.100.

Dependencies are inferred from the claim text.

Facts

Application: 19/130,688Filed 29 Nov 2023
Priority: JP 2022-1937892 Dec 2022
Published: 2 Jul 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification18 codes

C21D 8/1283
Involving a particular surface treatment: application of a separating or insulating coating
C21D 9/46
Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor: for sheet metals
C22C 38/004
Ferrous alloys, e.g. steel alloys: very low carbon steels, i.e. having a carbon content of less than 0,01%
C22C 38/02
Ferrous alloys, e.g. steel alloys: containing silicon

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No related US applications are recorded in the indexed filing history.

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