Title:
AGE-HARDENABLE NONORIENTED ELECTROMAGNETIC STEEL SHEET HAVING EXCELLENT BLANKING PROPERTY AND CORE LOSS, PRODUCTION METHOD THEREFOR AND PRODUCTION METHOD FOR ROTOR USING THE SAME
Document Type and Number:
Japanese Patent JP2004183066
Kind Code:
A
Abstract:
To provide a nonoriented electromagnetic steel sheet which sufficiently increases the yield strength of a rotor while maintaining high blanking properties and satisfactory core loss, to provide a production method therefor, and to provide a production method for a rotor using the same.
The age-hardenable nonoriented electromagnetic steel sheet comprises, by mass, ≤0.02% C, ≤4.5% Si, ≤2.0Mn, ≤4.0% Al, ≤0.02% S, and 0.5 to 3.0% Cu, and the balance Fe with inevitable impurities. In the steel sheet, the increase of yield strength by aging treatment at 500°C for 10 hr is ≥100 MPa, and further, deterioration in core loss value is ≤1.5 W/kg.
Inventors:
TAKASHIMA MINORU
KONO MASAAKI
KONO MASAKI
KONO MASAAKI
KONO MASAKI
Application Number:
JP2002353250A
Publication Date:
July 02, 2004
Filing Date:
December 05, 2002
Export Citation:
Assignee:
JFE STEEL KK
International Classes:
C21D8/12; C22C38/00; C22C38/16; C22C38/60; H01F1/16; (IPC1-7): C22C38/00; C21D8/12; C22C38/16; C22C38/60; H01F1/16
Domestic Patent References:
| JP2004084053A | 2004-03-18 |
Attorney, Agent or Firm:
Daitaro Shiraki