METHOD FOR MANUFACTURING POWDER CORE AND MAGNETIC CORE POWDER

Title:

METHOD FOR MANUFACTURING POWDER CORE AND MAGNETIC CORE POWDER

Document Type and Number:

WIPO Patent Application WO/2013/146809

Kind Code:

A1

Abstract:

A powder core (5) is manufactured through: a powder-forming process of forming a magnetic core powder (1), which is obtained from a soft magnetic metal powder (2) and an insulating film (3) that covers the surface thereof; a compression molding process, which obtains a compacted powder (4) of the magnetic core powder (1); and a heating process, which binds adjacent insulating films (3) to each other in the solid state without being liquefied, the binding being a result of heating the compacted powder (4) at or above the recrystallization temperature and at or below the melting point of the soft magnetic metal powder (2).

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Inventors:

MUNEDA NORIKAZU (JP)
KATAYANAGI HIKARU (JP)
SHIMAZU EIICHIROU (JP)

Application Number:

PCT/JP2013/058847

Publication Date:

October 03, 2013

Filing Date:

March 26, 2013

Export Citation:

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Assignee:

NTN TOYO BEARING CO LTD (JP)
MUNEDA NORIKAZU (JP)
KATAYANAGI HIKARU (JP)
SHIMAZU EIICHIROU (JP)

International Classes:

B22F3/00; B22F1/16; H01F1/24; H01F41/02

Foreign References:

JP2010251474A

2010-11-04

Attorney, Agent or Firm:

SHIROMURA Kunihiko et al. (JP)
Kunihiko Shiromura (JP)

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