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: US5863356A] PCT No. PCT/EP95/01020 Sec. 371 Date Oct. 3, 1996 Sec. 102(e) Date Oct. 3, 1996 PCT Filed Mar. 18, 1995 PCT Pub. No. WO95/25820 PCT Pub. Date Sep. 28, 1995The invention comprises a method for producing electric sheets, in particular grain-oriented electric sheets, with an evenly well-adhering glass film and with improved magnetic properties, in which the hot rolled strip which is produced at first and is optionally annealed is cold-rolled up to an end thickness in one or several steps, thereafter an annealing separator is applied to the strip which is rolled up to the end thickness, and is dried, and therafter the cold strip thus coated is subjected to high-temperature annealing, with an important component of the annealing separator being a hydrous magnesium oxide (MgO) dispersion and the annealing separator being additionally provided with at least one additive. The characterizing feature of the invention is that a finely dispersed water-soluble sodium phosphate 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)
Citation (search report)
See references of WO 9525820A1
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