Invention Grant
- Patent Title: Method for producing laminated magnetic core
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Application No.: US15738710Application Date: 2016-07-01
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Publication No.: US11232901B2Publication Date: 2022-01-25
- Inventor: Akihiro Makino , Nobuyuki Nishiyama , Kana Takenaka , Yukio Nishikawa , Terutsugu Segawa
- Applicant: TOHOKU MAGNET INSTITUTE CO., LTD. , PANASONIC CORPORATION
- Applicant Address: JP Sendai; JP Kadoma
- Assignee: TOHOKU MAGNET INSTITUTE CO., LTD.,PANASONIC CORPORATION
- Current Assignee: TOHOKU MAGNET INSTITUTE CO., LTD.,PANASONIC CORPORATION
- Current Assignee Address: JP Sendai; JP Kadoma
- Agency: Holtz, Holtz & Volek PC
- Priority: JPJP2015-134309 20150703
- International Application: PCT/JP2016/069674 WO 20160701
- International Announcement: WO2017/006868 WO 20170112
- Main IPC: H01F41/02
- IPC: H01F41/02 ; C21D6/00 ; C21D9/52 ; C21D1/26 ; H01F27/25 ; H01F3/04 ; H01F1/153 ; C22C45/02 ; H01F1/147 ; H01F27/245
Abstract:
A method for producing a magnetic core includes a processing step of giving a desired shape to a strip made of an alloy composition, a heat-treating step of forming bcc-Fe crystals, and then a stacking step of obtaining a magnetic core having a shape. Here, the alloy composition is Fe—B—Si—P—Cu—C and has an amorphous phase as a primary phase. In the heat-treating step, the strip is heated up to a temperature higher than a crystallization temperature of the alloy composition at a high heating rate.
Public/Granted literature
- US20180166213A1 LAMINATED MAGNETIC CORE AND METHOD FOR PRODUCING THE SAME Public/Granted day:2018-06-14
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