Title:
POWDER MIXTURE FOR POWDER MAGNETIC CORE AND POWDER MAGNETIC CORE
Document Type and Number:
WIPO Patent Application WO/2015/079981
Kind Code:
A1
Abstract:
One embodiment of the present invention relates to a powder mixture for a powder magnetic core, said powder mixture being characterized by: comprising an iron-based soft magnetic powder (A) that is coated with an insulating film and an iron-based soft magnetic powder (B) that is not coated with an insulating film; and by the mixture ratio of the iron-based soft magnetic powder (A) and the iron-based soft magnetic powder (B) satisfying formula (1) that is indicated below. The present invention makes it possible to achieve a powder mixture for a powder magnetic core that improves compressibility at the time of molding and that makes it possible to keep iron loss (hysteresis loss + eddy current loss) within a predetermined amount. Formula (1): 1 mass% ≤ [mass of iron-based soft magnetic powder (B)/(mass of iron-based soft magnetic powder (A) + mass of iron-based soft magnetic powder (B))] × 100 ≤ 5 mass%.
Inventors:
MITANI HIROYUKI
HOJO HIROFUMI
TANIGUCHI YUJI
HOJO HIROFUMI
TANIGUCHI YUJI
Application Number:
PCT/JP2014/080548
Publication Date:
June 04, 2015
Filing Date:
November 18, 2014
Export Citation:
Assignee:
KOBE STEEL LTD (JP)
International Classes:
H01F1/20; B22F1/16; H01F1/24
Domestic Patent References:
| WO2012115137A1 | 2012-08-30 | |||
| WO2013073180A1 | 2013-05-23 |
Foreign References:
| JP2010225673A | 2010-10-07 | |||
| JP2010153638A | 2010-07-08 | |||
| JP2013051329A | 2013-03-14 |
Attorney, Agent or Firm:
HAMADA Yuriko et al. (JP)
Yuriko Hamada (JP)
Yuriko Hamada (JP)
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