Grain Oriented Electrical Steel Sheet

Abstract: This grain oriented electrical steel sheet comprises a base steel sheet a forsterite coating film formed on the surface of the base steel sheet and an insulation film formed on the surface of the forsterite coating film wherein: the chemical composition of the base steel sheet contains 0.80 to 7.00% by mass of Si; the area ratio of crystal grains having a distance in the rolling direction between crystal grain boundaries in the surface of the base steel sheet of 3.0 mm to 13.0 mm inclusive is 70% or more; B8 that is a magnetic flux density generated by a magnetic force of 800 A/m is 1.88 T or more; W17/50 that is an iron loss where the frequency is 50 Hz and the maximum magnetic flux density is 1.7 T is 13.1??t2 4.3??t+1.2 (W/kg) or less where the sheet thickness is t (mm); and LvA200Hz that is a 200 Hz component of a magnetostriction waveform is 60 to 78 dBA.

Patent Information

Application #

Filing Date

11 March 2025

Publication Number

14/2025

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. MOGI Hisashi

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

2. KAWAMURA Yusuke

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

3. IWAKI Masataka

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

4. TAKAHASHI Masaru

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

Specification

Documents

Application Documents

#	Name	Date
1	202517021769-TRANSLATIOIN OF PRIOIRTY DOCUMENTS ETC. [11-03-2025(online)].pdf	2025-03-11
2	202517021769-STATEMENT OF UNDERTAKING (FORM 3) [11-03-2025(online)].pdf	2025-03-11
3	202517021769-REQUEST FOR EXAMINATION (FORM-18) [11-03-2025(online)].pdf	2025-03-11
4	202517021769-PROOF OF RIGHT [11-03-2025(online)].pdf	2025-03-11
5	202517021769-PRIORITY DOCUMENTS [11-03-2025(online)].pdf	2025-03-11
6	202517021769-POWER OF AUTHORITY [11-03-2025(online)].pdf	2025-03-11
7	202517021769-NOTIFICATION OF INT. APPLN. NO. & FILING DATE (PCT-RO-105-PCT Pamphlet) [11-03-2025(online)].pdf	2025-03-11
8	202517021769-FORM 18 [11-03-2025(online)].pdf	2025-03-11
9	202517021769-FORM 1 [11-03-2025(online)].pdf	2025-03-11
10	202517021769-DRAWINGS [11-03-2025(online)].pdf	2025-03-11
11	202517021769-DECLARATION OF INVENTORSHIP (FORM 5) [11-03-2025(online)].pdf	2025-03-11
12	202517021769-COMPLETE SPECIFICATION [11-03-2025(online)].pdf	2025-03-11
13	202517021769-FORM 3 [30-07-2025(online)].pdf	2025-07-30