| 发明名称 | Powder magnetic core and the method of manufacturing the same | ||
| 摘要 | A powder magnetic core with improved high frequency magnetic characteristics and reduced eddy current loss is manufactured by a manufacturing method including the steps of (a) providing coated soft magnetic particles which are particles composed of soft magnetic material which each have been coated with an insulating coating, and insulator particles; (b) forming a magnetic layer by press molding the coated soft magnetic particles in a mold assembly; (c) forming an insulator layer on the magnetic layer by press molding the insulator particles in the mold assembly; and (d) repeating the steps (b) and (c) to fabricate a laminate of alternating magnetic layers and insulator layers and provide the powder magnetic core. | ||
| 申请公布号 | US8974608(B2) | 申请公布日期 | 2015.03.10 |
| 申请号 | US200812081490 | 申请日期 | 2008.04.16 |
| 申请人 | Fuji Electric Co., Ltd. | 发明人 | Hirose Takayuki;Edo Masaharu;Sato Akira |
| 分类号 | B22F1/00;H01F1/00;H01F1/03;C22C1/00;H01F41/02;B22F1/02;B22F7/02;C22C33/02;H01F1/24 | 主分类号 | B22F1/00 |
| 代理机构 | Rabin & Berdo, P.C. | 代理人 | Rabin & Berdo, P.C. |
| 主权项 | 1. A method of manufacturing a powder magnetic core, the method comprising the steps of: (a) providing coated soft magnetic particles, all of which are particles of soft magnetic material which each have been coated with a first insulating coating; (b) providing insulator particles, all of which are particles of soft magnetic material which each have been coated with a second insulating coating having a thickness which is greater than the first insulating coating; (c) forming a magnetic layer by press molding the coated soft magnetic particles in a mold assembly; (d) forming an insulator layer on the magnetic layer by press molding the insulator particles in the mold assembly; and (e) repeating the steps (c) and (d) to fabricate a laminate of alternating magnetic layers and insulator layers and provide the powder magnetic core. | ||
| 地址 | Kawasaki-shi JP | ||