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Title:
METHOD FOR MANUFACTURING FLEXIBLE RARE-EARTH BOND MAGNET USING STRIP CAST MAGNET POWDER AND MOTOR
Document Type and Number:
Japanese Patent JP2005123374
Kind Code:
A
Abstract:

To realize initial irreversible demagnetization, long-term irreversible demagnetization, rust resistance, dimensional stability under high-temperature exposure, and high (BH)max by using Nd2Fe14B-based spherical magnet powder processed by spinning cup gas atomizing method.

The method for manufacturing a flexible rare-earth bond magnet substantially includes a step 1 wherein a compound [C0] of a strip cast rare-earth magnet powder [A] and a binder [B0] containing an extendable element [B1] is compressed to make a green compact [D0], a step 2 wherein the green compact [D0] is heated to make a magnet precursor [E1], a step 3 wherein the extendable element [B1] of the magnet precursor [E1] is extended to make a flexible rare-earth bond magnet [F1], and a step 4 wherein the flexible rare-earth bond magnet [F1] is changed to be like a circle.


Inventors:
Yamashita, Fumitoshi
Fujisaki, Tsutomu
Kawaguchi, Fumio
Application Number:
JP2003000356098
Publication Date:
May 12, 2005
Filing Date:
October 16, 2003
Export Citation:
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Assignee:
MATSUSHITA ELECTRIC IND CO LTD
International Classes:
B22F3/00; H01F1/08; H01F41/02; H02K15/03; (IPC1-7): H01F1/08; B22F3/00; H01F41/02; H02K15/03
Attorney, Agent or Firm:
岩橋 文雄
坂口 智康
内藤 浩樹