Invention Publication
- Patent Title: NON-GRAIN-ORIENTED ELECTRICAL STEEL SHEET, METHOD FOR PUNCHING NON-GRAIN-ORIENTED ELECTRICAL STEEL SHEET AND DIE FOR PUNCHING NON-GRAIN-ORIENTED ELECTRICAL STEEL SHEET
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Application No.: US18279725Application Date: 2022-03-30
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Publication No.: US20240309498A1Publication Date: 2024-09-19
- Inventor: Takeaki WAKISAKA , Yoshiaki NATORI
- Applicant: NIPPON STEEL CORPORATION
- Applicant Address: JP Tokyo
- Assignee: NIPPON STEEL CORPORATION
- Current Assignee: NIPPON STEEL CORPORATION
- Current Assignee Address: JP Tokyo
- Priority: JP 21061846 2021.03.31 JP 21099782 2021.06.15
- International Application: PCT/JP2022/015938 2022.03.30
- Date entered country: 2023-08-31
- Main IPC: C22C38/02
- IPC: C22C38/02 ; B21D28/14 ; B21D35/00 ; C21D8/12

Abstract:
This non-grain-oriented electrical steel sheet is a non-grain-oriented electrical steel sheet including a silicon steel sheet as a base material, wherein the silicon steel sheet has a predetermined mechanical property depending on a direction with respect to a rolling direction, and the difference between a maximum value and a minimum value of diameters of circular holes after punching with a substantially circular die is 0.20% or less of the average value of the maximum value and the minimum value.
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