Title:
圧粉磁心用粉末の製造方法、その圧粉磁心用粉末の製造方法により製造された圧粉磁心用粉末を用いた圧粉磁心、及び、圧粉磁心用粉末製造装置
Document Type and Number:
Japanese Patent JP5187438
Kind Code:
B2
Abstract:
To provide a method of manufacturing a powder for dust core capable of preventing generation of secondary particles during a siliconizing treatment and improving quality and productivity of the powder for dust core, a dust core made of the powder for dust core manufactured by the method, and an apparatus for manufacturing the powder for dust core, of a powder mixture (23) comprising a soft magnetic metal powder (21) and a powder for siliconizing (22) including silicon dioxide, only the soft magnetic metal powder (21) is heated by induction heating to transmit heat from the surface of the soft magnetic metal powder (21) to the powder for siliconizing (22), thereby releasing a silicon element from the powder for siliconizing (22) and diffusing and impregnating the silicon element into the surface of the soft magnetic metal powder (21) to form a silicon impregnated layer.
Inventors:
Sugiyama Masaki
Noboru Yamaguchi
Shota Ohira
Noboru Yamaguchi
Shota Ohira
Application Number:
JP2011504271A
Publication Date:
April 24, 2013
Filing Date:
March 02, 2010
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
B22F1/00; B22F1/16; F27B7/16; F27B7/34; F27B7/42; H01F1/24; H01F27/255; H01F41/02
Domestic Patent References:
| JP2009235517A | 2009-10-15 | |||
| JP2007231331A | 2007-09-13 | |||
| JP2007231330A | 2007-09-13 | |||
| JP2009256750A | 2009-11-05 | |||
| JP2009123774A | 2009-06-04 | |||
| JP2007013069A | 2007-01-18 | |||
| JP2008069415A | 2008-03-27 |
Foreign References:
| WO2008149825A1 | 2008-12-11 | |||
| WO2008032668A1 | 2008-03-20 |
Attorney, Agent or Firm:
Patent Business Corporation Cosmos Patent Office