EP 0553040 B1 19951122 - Remanent induction trimming method for a sintered magnet and product thus obtained.
Title (en)
Remanent induction trimming method for a sintered magnet and product thus obtained.
Title (de)
Verfahren zum Abgleichen der Remanenzinduktion eines Sintermagneten und damit hergestelltes Produkt.
Title (fr)
Méthode de réglage de l'induction rémanente d'un aimant fritté et produit ainsi obtenu.
Publication
Application
Priority
FR 9200910 A 19920123
Abstract (en)
[origin: EP0553040A1] The invention relates to a method for trimming the remanence of a sintered magnet by varying the instant of application of the orienting field during cold compression. <??>The method consists in obtaining powders of suitable grain size, in cold compressing them under an orienting field, in sintering them, in heat-treating them, in machining them and magnetising them, a precompression TP >/= 20%, and preferably 30-80%, being performed before applying the orienting field. <??>This method applies to magnets of any shape required to have a magnetic induction which is well defined in modulus and in direction, in particular to ring magnets for travelling wave tubes. <IMAGE>
IPC 1-7
IPC 8 full level
B22F 3/02 (2006.01); B22F 5/10 (2006.01); B22F 5/12 (2006.01); H01F 13/00 (2006.01); H01F 41/02 (2006.01)
CPC (source: EP US)
H01F 13/003 (2013.01 - EP US); H01F 41/0286 (2013.01 - EP US)
Designated contracting state (EPC)
CH DE FR GB IT LI
DOCDB simple family (publication)
EP 0553040 A1 19930728; EP 0553040 B1 19951122; CA 2087230 A1 19930724; DE 69300828 D1 19960104; DE 69300828 T2 19960523; FI 930246 A0 19930121; FI 930246 A 19930724; FR 2686730 A1 19930730; FR 2686730 B1 19941104; JP H05308030 A 19931119; US 5288454 A 19940222
DOCDB simple family (application)
EP 93420022 A 19930120; CA 2087230 A 19930113; DE 69300828 T 19930120; FI 930246 A 19930121; FR 9200910 A 19920123; JP 930693 A 19930122; US 124993 A 19930106