Title:
POWDER MAGNETIC CORE, METHOD FOR MANUFACTURING SAME, AND COIL COMPONENT
Document Type and Number:
WIPO Patent Application WO/2013/015095
Kind Code:
A1
Abstract:
A method for manufacturing a powder magnetic core includes a step of acquiring a powder magnetic core by pressure forming with a mold an iron-based alloy powder consisting primarily of an insulation-coated pure iron powder or iron, a step of heat-treating the acquired powder magnetic core, and a step of post-processing by applying an abrasive wheel to at least a part of the heat-treated powder magnetic core. During the post-processing step, the powdered magnetic core is ground as the powder magnetic core and the abrasive wheel are rotated so that a tool mark generated on the machined surface of the powder magnetic core is formed to be isotropic.
Inventors:
UENO TOMOYUKI (JP)
SHIMADA YOSHIYUKI (JP)
SHIMADA YOSHIYUKI (JP)
Application Number:
PCT/JP2012/067289
Publication Date:
January 31, 2013
Filing Date:
July 06, 2012
Export Citation:
Assignee:
SUMITOMO ELECTRIC INDUSTRIES (JP)
SUMITOMO ELECTRIC SINTERED ALY (JP)
UENO TOMOYUKI (JP)
SHIMADA YOSHIYUKI (JP)
SUMITOMO ELECTRIC SINTERED ALY (JP)
UENO TOMOYUKI (JP)
SHIMADA YOSHIYUKI (JP)
International Classes:
H01F41/02; B22F1/02; B22F3/00; B22F3/035; B22F3/24; B24B7/04; B24B53/00; C09K3/14; H01F7/06; H01F27/255
Domestic Patent References:
| WO2009075173A1 | 2009-06-18 |
Foreign References:
| JPH05217777A | 1993-08-27 | |||
| JPH0670219U | 1994-09-30 | |||
| JPH045356U | 1992-01-17 | |||
| JPS63267152A | 1988-11-04 | |||
| JP2002079443A | 2002-03-19 | |||
| JP2005268684A | 2005-09-29 |
Attorney, Agent or Firm:
NAKATA, Motomi et al. (JP)
Nakada Motoki (JP)
Nakada Motoki (JP)
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Claims:
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