EP 0752012 A1 19970108 - PROCESS FOR PRODUCING MAGNETIC STEEL SHEETS WITH A GLASS COATING
Title (en)
PROCESS FOR PRODUCING MAGNETIC STEEL SHEETS WITH A GLASS COATING
Title (de)
VERFAHREN ZUR HERSTELLUNG VON ELEKTROBLECHEN MIT EINEM GLASÜBERZUG
Title (fr)
PROCEDE DE PRODUCTION DE TOLES ELECTROMAGNETIQUES A ENROBAGE VERRE
Publication
Application
Priority
- DE 4409691 A 19940322
- EP 9501020 W 19950318
Abstract (en)
[origin: DE4409691A1] The invention relates to a process for producing magnetic steel sheets, especially grain-oriented sheets, with a uniformly well-adherent glass film and improved magnetic properties in which the initially produced and possibly annealed hot strip is cold-rolled to its final thickness in one or more steps, an annealing separator is then applied to the strip rolled to its final thickness and the cold strip thus coated is subjected to high-temperature annealing, wherein an aqueous dispersion of magnesium oxide (MgO) is an important component of the annealing separator, which also has at least one additive. A feature of the invention is that a finely dispersed oxidic aluminium compound is used as at least one additive.
IPC 1-7
IPC 8 full level
C23C 22/00 (2006.01); C21D 1/70 (2006.01); C21D 8/12 (2006.01); C21D 9/46 (2006.01); C22F 1/00 (2006.01); C22F 1/10 (2006.01); C23D 5/02 (2006.01); H01F 1/16 (2006.01); H01F 1/18 (2006.01)
CPC (source: EP KR US)
C21D 8/12 (2013.01 - KR); C21D 8/1283 (2013.01 - EP US); C22F 1/00 (2013.01 - EP US); C22F 1/10 (2013.01 - EP US); C23D 5/02 (2013.01 - EP US); H01F 1/18 (2013.01 - EP KR US)
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
US 5863356 A 19990126; AT E170226 T1 19980915; CZ 273896 A3 19970416; CZ 292216 B6 20030813; DE 4409691 A1 19950928; DE 59503345 D1 19981001; EP 0752012 A1 19970108; EP 0752012 B1 19980826; JP 3730254 B2 20051221; JP H09510503 A 19971021; KR 100367985 B1 20030802; KR 970701795 A 19970412; PL 178890 B1 20000630; PL 316139 A1 19961223; RU 2139945 C1 19991020; WO 9525820 A1 19950928
DOCDB simple family (application)
US 70457996 A 19961003; AT 95912252 T 19950318; CZ 273896 A 19950318; DE 4409691 A 19940322; DE 59503345 T 19950318; EP 9501020 W 19950318; EP 95912252 A 19950318; JP 52437895 A 19950318; KR 19960705227 A 19960921; PL 31613995 A 19950318; RU 96119243 A 19950318