Grain Oriented Electromagnetic Steel Sheet And Method For

Grain Oriented Electromagnetic Steel Sheet And Method For Manufacturing Same

Abstract: This grain-oriented electromagnetic steel sheet is provided with a base steel sheet and an insulating coating film arranged on the base steel sheet in contact with the base steel sheet. When a cross-sectional surface of the grain-oriented electromagnetic steel sheet which is cut in a direction parallel with the thickness direction and perpendicular to the width direction is observed, the base steel sheet has an internal oxidation SiO2 in a boundary region with the insulating coating film, the insulating coating film has voids and an oxide containing iron and phosphorus, the area ratio of the voids relative to the area of the boundary region with the insulating coating film is 0.010 to 3.0%, and the area ratio of the oxide containing iron and phosphorus relative to the area of the insulating coating film is 0.10 to 5.0%.

Patent Information

Application #

Filing Date

30 September 2024

Publication Number

06/2025

Publication Type

INA

Invention Field

METALLURGY

Status

Email

Parent Application

Applicants

NIPPON STEEL CORPORATION

6-1, Marunouchi 2-chome, Chiyoda-ku, Tokyo 1008071

Inventors

1. KIKUZUKI Mayuko

c/o NIPPON STEEL CORPORATION, 6-1, Marunouchi 2-chome, Chiyoda-ku, Tokyo 1008071

2. KATAOKA Takashi

c/o NIPPON STEEL CORPORATION, 6-1, Marunouchi 2-chome, Chiyoda-ku, Tokyo 1008071

3. TAKEDA Kazutoshi

c/o NIPPON STEEL CORPORATION, 6-1, Marunouchi 2-chome, Chiyoda-ku, Tokyo 1008071

4. TANIGUCHI Shunsuke

c/o NIPPON STEEL CORPORATION, 6-1, Marunouchi 2-chome, Chiyoda-ku, Tokyo 1008071

Specification

Documents

Application Documents

#	Name	Date
1	202417073771-TRANSLATIOIN OF PRIOIRTY DOCUMENTS ETC. [30-09-2024(online)].pdf	2024-09-30
2	202417073771-STATEMENT OF UNDERTAKING (FORM 3) [30-09-2024(online)].pdf	2024-09-30
3	202417073771-REQUEST FOR EXAMINATION (FORM-18) [30-09-2024(online)].pdf	2024-09-30
4	202417073771-PROOF OF RIGHT [30-09-2024(online)].pdf	2024-09-30
5	202417073771-PRIORITY DOCUMENTS [30-09-2024(online)].pdf	2024-09-30
6	202417073771-POWER OF AUTHORITY [30-09-2024(online)].pdf	2024-09-30
7	202417073771-FORM 18 [30-09-2024(online)].pdf	2024-09-30
8	202417073771-FORM 1 [30-09-2024(online)].pdf	2024-09-30
9	202417073771-DRAWINGS [30-09-2024(online)].pdf	2024-09-30
10	202417073771-DECLARATION OF INVENTORSHIP (FORM 5) [30-09-2024(online)].pdf	2024-09-30
11	202417073771-COMPLETE SPECIFICATION [30-09-2024(online)].pdf	2024-09-30
12	202417073771-FORM 3 [20-02-2025(online)].pdf	2025-02-20