Title:
NONORIENTED MAGNETIC STEEL SHEET FOR HIGH-PERFORMANCE MOTOR
Document Type and Number:
Japanese Patent JP2017197806
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a nonoriented magnetic steel sheet for high-performance motors, which can avoid a seizure between laminates even when a thickness of an insulating coating is thinned and, by increasing a space factor of a thin magnetic steel sheet, can reduce an iron loss at a high frequency.SOLUTION: A nonoriented magnetic steel sheet for high-performance motors that is a nonoriented magnetic steel sheet having a thickness of not larger than 0.20 mm and having an insulation film thickness of less than 0.8 μm, has an oxygen amount of a mother steel sheet surface from which an insulation film is removed of 100 ppm or higher and 600 ppm or lower, and may combine a high space factor and seizure prevention after stress relieving annealing. Even when the stress relieving annealing is applied, the seizure between the laminates may be avoided. By using the nonoriented magnetic steel sheet for high-performance motors of the present invention, a high-performance motor iron core having a high space factor of the steel sheet and excellent high frequency iron loss characteristics may be obtained.SELECTED DRAWING: Figure 1
Inventors:
ARAI SATOSHI
MUNETA KOUJI
MASUMITSU NAOTO
YASHIKI HIROYOSHI
MUNETA KOUJI
MASUMITSU NAOTO
YASHIKI HIROYOSHI
Application Number:
JP2016088951A
Publication Date:
November 02, 2017
Filing Date:
April 27, 2016
Export Citation:
Assignee:
NIPPON STEEL & SUMITOMO METAL CORP
International Classes:
C22C38/00; H01F1/16; H01F1/18
Domestic Patent References:
| JP2003013190A | 2003-01-15 | |||
| JP2001107261A | 2001-04-17 | |||
| JPH11307333A | 1999-11-05 | |||
| JPH11117042A | 1999-04-27 |
Attorney, Agent or Firm:
Koji Hagiwara
Tetsuo Kanamoto
Miaki Kametani
Tetsuo Kanamoto
Miaki Kametani