Title:
PRODUCTION OF RARE EARTH ELEMENT-IRON-BORON MAGNET
Document Type and Number:
Japanese Patent JPH03287724
Kind Code:
A
Abstract:
PURPOSE: To easily produce a rare earth element - iron - boron magnet having high magnetic properties by sealing an ingot of rare earth element-iron-boron alloy in a metallic capsule and carrying out rolling under specific rolling conditions.
CONSTITUTION: An ingot of an alloy containing rare earth elements, iron, and boron as principal components is subjected to rolling in a state sealed in a metallic capsule. At this time, working conditions at the time of the above rolling are regulated so that ≥30% reduction of area is reached at 850-1000°C by means of rolling from two directions. By this method, the high-efficiency rare earth element - iron - boron magnet having high magnetic flux density and coercive force can be obtained.
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Inventors:
AKIOKA KOJI
KOBAYASHI OSAMU
YAMAGAMI TOSHIAKI
ARAI SEI
KOBAYASHI OSAMU
YAMAGAMI TOSHIAKI
ARAI SEI
Application Number:
JP9071990A
Publication Date:
December 18, 1991
Filing Date:
April 05, 1990
Export Citation:
Assignee:
SEIKO EPSON CORP
International Classes:
C21D8/12; C22C38/00; H01F1/053; H01F41/02; (IPC1-7): C21D8/12; C22C38/00; H01F1/053; H01F41/02
Attorney, Agent or Firm:
Kisaburo Suzuki (1 outside)
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