EP 0597284 B1 19980121 - Insulating process for soft magnetic strips
Title (en)
Insulating process for soft magnetic strips
Title (de)
Isolationsverfahren für weichmagnetische Bänder
Title (fr)
Procédé pour isoler les bandes magnétiques douces
Publication
Application
Priority
DE 4238150 A 19921112
Abstract (en)
[origin: EP0597284A1] The invention relates to an insulation process for soft-magnetic (low-retentivity) semifinished products which is based on the use of water-soluble salts of aluminium and/or of magnesium. The solution is applied to the semifinished product, and magnesium oxide and/or aluminium oxide is only formed by subsequent heat treatment of the semifinished product at a temperature of above the decomposition temperature of the salt. This makes it possible to shape the semifinished products, for example by stamping, cutting or dividing, before the oxide ceramic grain providing the actual insulation is formed. This reduces the tool wear during shaping.
IPC 1-7
IPC 8 full level
C23C 18/12 (2006.01); H01F 1/18 (2006.01)
CPC (source: EP)
C23C 18/1216 (2013.01); H01F 1/18 (2013.01)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0597284 A1 19940518; EP 0597284 B1 19980121; DE 4238150 A1 19940519; DE 59308035 D1 19980226
DOCDB simple family (application)
EP 93116910 A 19931020; DE 4238150 A 19921112; DE 59308035 T 19931020