Title:
SPECIFYING METHOD OF MAGNETIC STEEL SHEET FOR MOTOR CORE
Document Type and Number:
Japanese Patent JP2005312155
Kind Code:
A
Abstract:
To provide a specifying method of an optimum magnetic steel sheet related to an application in which compressive stress acts in the internal direction of the steel sheet surface of a shrink-fitted and fixed core, etc.
The selecting method of the magnetic steel sheet for a motor core uses a nonoriented magnetic steel sheet having a plane anisotropy index S of 0.06 or less for the core. The plane anisotropic index S is obtained from S=4×(Bmax-Bmin)/(B500+2B5045+B5090) using magnetic flux densities B500, B5045, B5090, excited and measured by a frequency of 50 Hz, a magnetizing force of 5,000 A/m in rolling directions of the steel sheet of 0°, 45° and 90° and a maximum value Bmax and a minimum value Bmin.
Inventors:
FUJIKURA MASAHIRO
KUROSAKI YOSUKE
KUBOTA TAKESHI
KUROSAKI YOSUKE
KUBOTA TAKESHI
Application Number:
JP2004124424A
Publication Date:
November 04, 2005
Filing Date:
April 20, 2004
Export Citation:
Assignee:
NIPPON STEEL CORP
International Classes:
H02K1/18; (IPC1-7): H02K1/18
Domestic Patent References:
| JP2003347140A | 2003-12-05 | |||
| JP2001049402A | 2001-02-20 | |||
| JP2003243214A | 2003-08-29 | |||
| JP2000144348A | 2000-05-26 | |||
| JP2004104929A | 2004-04-02 |
Attorney, Agent or Firm:
Hiroaki Tamura
Tomoyuki Yabuki
Tsugeko Shigeo
Tomoyuki Yabuki
Tsugeko Shigeo
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