Title:
MANUFACTURING METHOD OF Fe-BASED NANOCRYSTAL ALLOY
Document Type and Number:
Japanese Patent JP2016145373
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a manufacturing method of Fe-based nanocrystal alloy suppressing coarsening of crystal and deposition of a compound and having excellent magnetic property.SOLUTION: An Fe-based amorphous thin band 1 fed from a rolling feed roll 2 is heated with moving in an induction heating deice 4 arranged with a heating coil 3 and set at a predetermined temperature. The heat treated Fe-based amorphous thin band 1 is wound by a roll receiving roll 5 and a first heat treatment process is completed. Then it is processed to a magnetic core shape depending on needs, and a re-heating treatment is conducted in a second heat treatment process. Also saturated magnetic flux density after the first heat treatment process Bs1 is set smaller than saturated magnetic flux density after the second heat treatment process Bs2.SELECTED DRAWING: Figure 1
Inventors:
MACHIDA HIROAKI
OKAMOTO KOICHI
TAKAHASHI MASAHIKO
CHIBA MIHO
SATAKE KAORU
YAMAKI MAKOTO
URATA KENRI
MATSUMOTO HIROYUKI
OKAMOTO KOICHI
TAKAHASHI MASAHIKO
CHIBA MIHO
SATAKE KAORU
YAMAKI MAKOTO
URATA KENRI
MATSUMOTO HIROYUKI
Application Number:
JP2015021754A
Publication Date:
August 12, 2016
Filing Date:
February 06, 2015
Export Citation:
Assignee:
NEC TOKIN CORP
International Classes:
C21D6/00; H01F1/14; H01F41/02
Domestic Patent References:
| JPH03146615A | 1991-06-21 | |||
| JP2003213331A | 2003-07-30 | |||
| JPH07320920A | 1995-12-08 | |||
| JP2000160241A | 2000-06-13 | |||
| JPH09125135A | 1997-05-13 |
Foreign References:
| WO2008133302A1 | 2008-11-06 | |||
| WO2016002945A1 | 2016-01-07 | |||
| US20120262266A1 | 2012-10-18 |
Attorney, Agent or Firm:
Kenho Ikeda
Takashi Sasaki
Takashi Sasaki