Method of producing motor core
US11522420B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 6, 2020 |
| Grant date | Dec 6, 2022 |
| Priority date | — |
| Expiry date | Mar 10, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F2003/103
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method of producing a motor core includes preparing a soft magnetic plate containing a transition metal element, preparing a modifying member containing an alloy having a melting point lower than a melting point of the soft magnetic plate, bringing the modifying member into contact with a part of a plate surface of the soft magnetic plate, causing the modifying member to diffuse and penetrate into the soft magnetic plate from a contact surface between the soft magnetic plate and the modifying member and forming a hard magnetic phase-containing part in a part of the soft magnetic plate, and laminating a plurality of soft magnetic plates on each other after the modifying member is brought into contact with the part of the plate surface of the soft magnetic plate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.