Production method for permanent magnet and press device

Details Production method for permanent magnet and press device Production method for permanent magnet and press device

2008-05-13

2008-05-13

Sheehan, John P. (Department: 1793)

Metal treatment

Process of modifying or maintaining internal physical...

Magnetic materials

C148S101000, C148S104000

Reexamination Certificate

active

10474546

ABSTRACT:
To avoid various problems caused by remnant magnetization and produce an anisotropic bonded magnet at a reduced cost, a method for producing an anisotropic bonded magnet by feeding a magnetic powder (such as an HDDR powder) into the cavity of a press machine and compacting it is provided. A weak magnetic field is created as a static magnetic field in a space including the cavity by using a magnetic member that is steadily magnetized. The magnetic powder being transported into the cavity is aligned parallel to the direction of the weak magnetic field. Next, the magnetic powder is compressed in the cavity, thereby obtaining a compact.

REFERENCES:
patent: 4888512 (1989-12-01), Shimizu
patent: 4981532 (1991-01-01), Takeshita et al.
patent: 6432158 (2002-08-01), Harada et al.
patent: 6432354 (2002-08-01), Ogawa et al.
patent: 2001/0018029 (2001-08-01), Ogawa et al.
patent: 2004/0241034 (2004-12-01), Mino et al.
patent: 1 447 827 (2004-08-01), None
patent: 2001-093712 (2001-04-01), None
patent: 2001-192705 (2001-07-01), None
patent: 2001-226701 (2001-08-01), None
Machine English Language Translation of Japanse Patent Document No. JP2001-226701A.
Supplementary European Search Report Dated Feb. 18, 2005 for EP 02 78 6003.

Affiliated with

Also associated with

Rating

Production method for permanent magnet and press device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Production method for permanent magnet and press device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Production method for permanent magnet and press device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3958183