EP 0058315 B1 19850410 - METHOD OF MAKING A FERROMAGNETIC PIECE, FERROMAGNETIC PIECE, AND USE OF THE SAME
Title (en)
METHOD OF MAKING A FERROMAGNETIC PIECE, FERROMAGNETIC PIECE, AND USE OF THE SAME
Publication
Application
Priority
FR 8102312 A 19810206
Abstract (en)
[origin: EP0058315A1] 1. Process for producing a piece having at least one dielectric separating layer from a ferromagnetic blank (30), a recess (31) being worked into the blank, which recess is so formed that the individual parts of the blank are joined together by at least one border-bridge (32), whereupon a non-ferromagnetic material (34) is introduced into the recess and the blank is subjected to a material-removing operation so that the ferromagnetic parts are joined together only through non-ferromagnetic material, characterised in that the blank (30) is heated in the form of a block to a temperature at which it is plastically deformable and plastic deformation of the blank is carried to form the said recess (31), and that after introduction of the non-ferromagnetic material (34) into the recess, the blank together with the non-ferromagnetic material introduced is compressed before the material-removing operation is carried out.
IPC 1-7
IPC 8 full level
H01F 41/02 (2006.01)
CPC (source: EP)
H01F 41/0206 (2013.01)
Designated contracting state (EPC)
AT CH DE FR GB IT LI
DOCDB simple family (publication)
EP 0058315 A1 19820825; EP 0058315 B1 19850410; AT E12714 T1 19850415; DE 3262921 D1 19850515; FR 2499759 A1 19820813; FR 2499759 B1 19850628
DOCDB simple family (application)
EP 82100545 A 19820127; AT 82100545 T 19820127; DE 3262921 T 19820127; FR 8102312 A 19810206