- Patent Title: Method for producing powder magnetic core and powder magnetic core
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Application No.: US17248203Application Date: 2021-01-14
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Publication No.: US12073989B2Publication Date: 2024-08-27
- Inventor: Yasutaka Matsumoto
- Applicant: SEIKO EPSON CORPORATION
- Applicant Address: JP Tokyo
- Assignee: SEIKO EPSON CORPORATION
- Current Assignee: SEIKO EPSON CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Pramod Chintalapoodi
- Priority: JP 20004231 2020.01.15
- Main IPC: H01F41/02
- IPC: H01F41/02 ; B22F1/08 ; B22F1/102 ; B22F1/14 ; B22F1/16 ; B22F3/16 ; H01F1/22

Abstract:
A method for producing a powder magnetic core includes applying energy to a surface of a soft magnetic powder coated with an insulator, exposing the soft magnetic powder to an atmosphere having an atmospheric pressure dew point of −30° C. or higher and 15° C. or lower, and forming a molded body by pressing the soft magnetic powder at 20 MPa or more and 400 MPa or less.
Public/Granted literature
- US20210213524A1 METHOD FOR PRODUCING POWDER MAGNETIC CORE AND POWDER MAGNETIC CORE Public/Granted day:2021-07-15
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