Title:
METHOD OF FRACTIONALIZE MAGNETIC DOMAIN IN ELECTRICAL STEEL TO REDUCE CORE LOSS
Document Type and Number:
Japanese Patent JPH01281708
Kind Code:
A
Abstract:
PURPOSE: To improve the core-loss characteristic of a product by fining the interval of a magnetic domain wall without damaging a surface with the electron beam treatment of a sheet surface and besides, giving an energy density sufficient for reducing a core loss. CONSTITUTION: At least one surface of a sheet is treated by an electron beam. and a narrow, substantially parallel band is formed as a treatment region separated by an untreated region in the direction of substantially crossing the direction of manufacturing a sheet. Also, in the electron beam treatment, a linear energy density sufficient for subdividing a magnetic domain interval without damaging the change of the shape of the sheet and the coat of the sheet is given thereto. Therefore, the loss of a sheet for electricity or a strip which has finally annealed magnetic domain structure is improved.
Inventors:
JIEEMUZU AREN SARUSUGIBUAA
KAARU FUIRITSUPU SUTOROBURU
RANDARU KEN NAIPU
KAARU FUIRITSUPU SUTOROBURU
RANDARU KEN NAIPU
Application Number:
JP5182989A
Publication Date:
November 13, 1989
Filing Date:
March 03, 1989
Export Citation:
Assignee:
ALLEGHENY INT INC
International Classes:
C21D8/12; C21D9/46; H01F1/153; H01F1/16; (IPC1-7): C21D9/46; H01F1/16
Domestic Patent References:
| JPS5992506A | 1984-05-28 | |||
| JPS63186826A | 1988-08-02 |
Attorney, Agent or Firm:
Kyozo Yuasa (4 outside)