- Patent Title: Method for manufacturing magnet and method for magnetizing magnet
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Application No.: US16616653Application Date: 2018-05-25
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Publication No.: US11623276B2Publication Date: 2023-04-11
- Inventor: Kenichi Fujikawa , Shoichiro Saito , Katsuya Kume , Takashi Yamamoto
- Applicant: NITTO DENKO CORPORATION
- Applicant Address: JP Ibaraki
- Assignee: NITTO DENKO CORPORATION
- Current Assignee: NITTO DENKO CORPORATION
- Current Assignee Address: JP Ibaraki
- Agency: Hauptman Ham, LLP
- Priority: JP2017-104929 20170526
- International Application: PCT/JP2018/020193 WO 20180525
- International Announcement: WO2018/216805 WO 20181129
- Main IPC: H01F7/06
- IPC: H01F7/06 ; B22F3/24 ; H01F13/00 ; H01F41/02

Abstract:
A method for manufacturing a magnet includes (1) a step of preparing three or more unmagnetized magnet materials of which magnetization easy axes are oriented in predetermined directions, and adhering the unmagnetized magnet materials with each other to make an assembly, and (2) a step of applying a curved pulse magnetic field to the assembly to magnetize the assembly, wherein in the step (2), the unmagnetized magnet materials are magnetized into magnet blocks, and an angle θ (where 0≤θ≤180 degrees holds) formed by magnetization directions of at least a pair of magnet blocks adjacent to each other is in a range of 30 degrees to 120 degrees.
Public/Granted literature
- US20200282463A1 METHOD FOR MANUFACTURING MAGNET AND METHOD FOR MAGNETIZING MAGNET Public/Granted day:2020-09-10
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