Title:
A manufacturing method of a powder magnetic core
Document Type and Number:
Japanese Patent JP6168382
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a configuration suitable for improving a space factor while suppressing an increase in core loss in a method for manufacturing a dust core configured using a soft magnetic material powder.SOLUTION: A method for manufacturing a dust core configured using a soft magnetic material powder comprises: a first step of mixing the soft magnetic material powder, a thermoplastic resin, and a silicone resin; a second step of heating the mixture which has passed the first step and pressing the heated mixture at a molding temperature not less than a glass transition temperature of the thermoplastic resin and a glass transition temperature of the silicone resin; and a third step of thermally processing a compact which has passed the second step at a temperature higher than the molding temperature.
Inventors:
Tetsuro Kato
Noboru Noguchi
Kazunori Nishimura
Noboru Noguchi
Kazunori Nishimura
Application Number:
JP2012270967A
Publication Date:
July 26, 2017
Filing Date:
December 12, 2012
Export Citation:
Assignee:
Hitachi Metals Co., Ltd.
International Classes:
H01F27/255; H01F1/26; H01F41/02
Domestic Patent References:
| JP2010245216A | ||||
| JP2008270539A | ||||
| JP2006339525A | ||||
| JP2012077363A | ||||
| JP2009231481A |
Foreign References:
| WO2009128425A1 |