Title:
Mixed powder for dust core and powder magnetic core
Document Type and Number:
Japanese Patent JP6320895
Kind Code:
B2
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:
Hiroyuki Mitani
Keifumi Hojo
Yuji Taniguchi
Keifumi Hojo
Yuji Taniguchi
Application Number:
JP2014211927A
Publication Date:
May 09, 2018
Filing Date:
October 16, 2014
Export Citation:
Assignee:
KABUSHIKI KAISHA KOBE SEIKO SHO
International Classes:
H01F1/26; B22F1/16; B22F3/00; B22F3/24; H01F3/08
Domestic Patent References:
| JP2010225673A | ||||
| JP2009164470A | ||||
| JP9272901A | ||||
| JP2000144208A | ||||
| JP2010245216A | ||||
| JP2006237153A |
Foreign References:
| WO2010073590A1 | ||||
| WO2013073180A1 |
Attorney, Agent or Firm:
Kaji/Suhara Patent Office
Seiji Kameoka
Hironori Takenaka
Toru Sakatani
Seiji Kameoka
Hironori Takenaka
Toru Sakatani