< Back
Sign In to Follow Application
View All Documents & Correspondence
Login

Non Oriented Electromagnetic Steel Sheet, Motor Core, Production Method For Non Oriented Electromagnetic Steel Sheet, And Production Method For Motor Core

Abstract: Provided is a non-oriented electromagnetic steel sheet that is characterized by having a prescribed chemical composition. The non-oriented electromagnetic steel sheet is also characterized in that, in a cross-section that is parallel to a rolled surface of the non-oriented electromagnetic steel sheet, the area ratio of a crystal structure A that is formed from crystal grains that have a grain size of at least 100 µm is 1%-30%. The non-oriented electromagnetic steel sheet is also characterized in that the average grain size of a crystal structure B that is not crystal structure A is no more than 40 µm. The non-oriented electromagnetic steel sheet is also characterized in that the Vickers hardness HvA of crystal structure A and the Vickers hardness HvB of crystal structure B satisfy expression 1 ((HvA2+HvB2)/2-(HvA+HvB)2/4=7.0).

Get Free WhatsApp Updates!
Notices, Deadlines & Correspondence

Patent Information

Application #
Filing Date
18 August 2023
Publication Number
49/2023
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. TANAKA Ichiro
c/o NIPPON STEEL CORPORATION, 6-1, Marunouchi 2-chome, Chiyoda-ku, Tokyo 1008071
2. WAKISAKA Takeaki
c/o NIPPON STEEL CORPORATION, 6-1, Marunouchi 2-chome, Chiyoda-ku, Tokyo 1008071
3. MURAKAWA Tesshu
c/o NIPPON STEEL CORPORATION, 6-1, Marunouchi 2-chome, Chiyoda-ku, Tokyo 1008071
4. NATORI Yoshiaki
c/o NIPPON STEEL CORPORATION, 6-1, Marunouchi 2-chome, Chiyoda-ku, Tokyo 1008071
5. FUJIMURA Hiroshi
c/o NIPPON STEEL CORPORATION, 6-1, Marunouchi 2-chome, Chiyoda-ku, Tokyo 1008071

Specification

Documents

Application Documents

# Name Date
1 202317055429-TRANSLATIOIN OF PRIOIRTY DOCUMENTS ETC. [18-08-2023(online)].pdf 2023-08-18
2 202317055429-STATEMENT OF UNDERTAKING (FORM 3) [18-08-2023(online)].pdf 2023-08-18
3 202317055429-PROOF OF RIGHT [18-08-2023(online)].pdf 2023-08-18
4 202317055429-PRIORITY DOCUMENTS [18-08-2023(online)].pdf 2023-08-18
5 202317055429-POWER OF AUTHORITY [18-08-2023(online)].pdf 2023-08-18
6 202317055429-FORM 1 [18-08-2023(online)].pdf 2023-08-18
7 202317055429-DECLARATION OF INVENTORSHIP (FORM 5) [18-08-2023(online)].pdf 2023-08-18
8 202317055429-COMPLETE SPECIFICATION [18-08-2023(online)].pdf 2023-08-18
9 202317055429-FORM 3 [08-01-2024(online)].pdf 2024-01-08
10 202317055429-FORM 18 [31-01-2025(online)].pdf 2025-01-31