A manufacturing method of the powder-compacting core using soft magnetic powder, and the powder-compacting core

Title:

A manufacturing method of the powder-compacting core using soft magnetic powder, and the powder-compacting core

Document Type and Number:

Japanese Patent JP6262504

Kind Code:

B2

Abstract:

The invention provides a press powder magnetic core which has an excellent magnetic property and excellent mechanical strength, and a method of manufacturing the same. Soft magnetic powder (2) and granulation powder made from insulation bonding material are compressed to form a molded body of the press powder magnetic core, heat treatment is performed on the obtained molded body, and thus the press powder magnetic core (1) is obtained. The powder filling rate of the press powder magnetic core is above 75volume%. The radial crushing strength, measured according to the JIS Z2507: 2000, of the press powder magnetic core is above 3.9N/mm<2> and below 11N/mm<2>.

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Inventors:

Kei Tsuchiya
Hisato Koshiba

Application Number:

JP2013246787A

Publication Date:

January 17, 2018

Filing Date:

November 28, 2013

Export Citation:

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Assignee:

ALPS ELECTRIC CO.,LTD.

International Classes:

H01F27/255; B22F1/00; B22F3/00; B22F3/24; C22C33/02; C22C38/00; H01F1/153; H01F1/22; H01F1/33; H01F27/24; H01F41/02

Domestic Patent References:

JP2011018822A
JP2008169466A
JP2012098817A1
JP2000109693A
JP2005136164A
JP3116701A
JP2009059787A
JP11238613A
JP2010103709A1

Attorney, Agent or Firm:

野▲崎▼ 照夫
Masahiro Matsushita
Katsuyuki Okubo
Kaoru Okada

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