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Patent Searching and Data


Title:
MAGNETIC CORE POWDER, DUST CORE, AND METHOD FOR PRODUCING MAGNETIC CORE POWDER
Document Type and Number:
WIPO Patent Application WO/2016/152364
Kind Code:
A1
Abstract:
This magnetic core powder A for producing a dust core according to the present invention has a particle size distribution within the range of 1-200 μm, contains a granulated powder 1 as a principal component which is obtained by granulating an iron-based amorphous powder having been subjected to an insulation treatment, and includes a glass powder having a softening point lower than the annealing treatment temperature. The granulated powder 1 is obtained by binding together iron-based amorphous powder particles 3 and magnetic powder particles 2 forming an insulating coating 4 that covers the surface of the particles 3, using a PVA aqueous solution having a viscosity of 3-25 mPa·s.

Inventors:
ARAKI HIKARU (JP)
KAKO NORITAKA (JP)
OOHIRA KOUYA (JP)
Application Number:
PCT/JP2016/055429
Publication Date:
September 29, 2016
Filing Date:
February 24, 2016
Export Citation:
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Assignee:
NTN TOYO BEARING CO LTD (JP)
International Classes:
B22F1/08; B22F1/102; B22F1/16; B22F3/00; H01F1/153; H01F1/24; H01F1/33; H01F27/24; H01F27/255; H01F41/02; B22F1/148
Foreign References:
JP2010027854A2010-02-04
JP2012009825A2012-01-12
JP2006045601A2006-02-16
Attorney, Agent or Firm:
SHIROMURA Kunihiko et al. (JP)
Kunihiko Shiromura (JP)
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