Longitudinal magnetic field compacting method and device for manufacturing rare earth magnets
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 23, 2007
Grant Date -
Nov 24, 2005
app pub date -
Jul 16, 2003
filing date -
Apr 2, 2003
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Disclosed is a longitudinal magnetic field compacting method and device for manufacturing a neodymium (Nd) based rare earth magnet in the shape of a butterfly for use in VCM of HDD or DVD, a disk or coin for use in coreless motors, and a block for use in linear motors, characterized in that a longitudinal compacting process is performed under a pulse magnetic field for orientation of rare earth powders in the direction of an applied magnetic field. Further, a compacted body of the rare earth powders has the same shape as end products, thus no additional processing cost, thereby lowering manufacturing costs. In addition, the rare earth powders can be subjected to an aligning process and a longitudinal compacting process at the same time under the high pulse magnetic field of 50 70 kOe, whereby the resulting rare earth magnet can have excellent magnetic properties of 42 50 MGOe.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully