EP 0910676 B1 20010110 - PROCESS FOR PRODUCING A GRAIN-ORIENTATED ELECTRICAL STEEL SHEET
Title (en)
PROCESS FOR PRODUCING A GRAIN-ORIENTATED ELECTRICAL STEEL SHEET
Title (de)
VERFAHREN ZUR HERSTELLUNG VON KORNORIENTIERTEM ELEKTROBLECH
Title (fr)
PROCEDE POUR PRODUIRE UNE TOLE ELECTRIQUE A GRAINS ORIENTES
Publication
Application
Priority
- DE 19628136 A 19960712
- EP 9703510 W 19970703
Abstract (en)
[origin: US6153019A] PCT No. PCT/EP97/03510 Sec. 371 Date Oct. 26, 1998 Sec. 102(e) Date Oct. 26, 1998 PCT Filed Jul. 3, 1997 PCT Pub. No. WO98/02591 PCT Pub. Date Jan. 22, 1998A process for producing a grain-oriented magnetic steel sheet in which a slab, made from a steel containing (in mass %) more than 0.005 to 0.10% C, 2.5 to 4.5% Si, 0.03 to 0.15% Mn, more than 0.01 to 0.05% S, 0.01 to 0.035% Al, 0.0045 to 0.012% N, 0.02 to 0.3% Cu, the remainder being Fe, including unavoidable impurities, is heated through and hot rolled to a final thickness between 1.5 and 7.0 mm. The hot strip is annealed and immediately cooled and cold rolled in one or several cold-rolling steps to the final thickness of the cold strip. The cold strip is subjected to a recrystallizing annealing process in a humid atmosphere containing hydrogen and nitrogen, with synchronous decarburization. A non-stick layer, essentially containing MgO, is applied to the surface of the decarburized cold strip which is then subjected to final annealing. The cold strip is then rolled into coils.
IPC 1-7
IPC 8 full level
B21B 1/46 (2006.01); C21D 1/76 (2006.01); C21D 9/46 (2006.01); C21D 8/12 (2006.01); C21D 9/56 (2006.01); C21D 9/573 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/16 (2006.01); H01F 1/18 (2006.01)
CPC (source: EP US)
C21D 8/1272 (2013.01 - EP US); C21D 1/76 (2013.01 - EP US); C21D 8/1222 (2013.01 - EP US); C21D 8/1233 (2013.01 - EP US); C21D 8/1261 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
US 6153019 A 20001128; AT E198629 T1 20010115; AU 3442897 A 19980209; AU 710053 B2 19990909; BR 9710302 A 19990817; CN 1078256 C 20020123; CN 1219977 A 19990616; CZ 288875 B6 20010912; CZ 6899 A3 19991013; DE 19628136 C1 19970424; DE 59702901 D1 20010215; EP 0910676 A1 19990428; EP 0910676 B1 20010110; ES 2154904 T3 20010416; ID 17500 A 19980108; ID 19071 A 19980611; IN 191758 B 20031227; JP 2000514506 A 20001031; JP 4369536 B2 20091125; PL 183750 B1 20020731; PL 331166 A1 19990621; RU 2190025 C2 20020927; SK 1899 A3 20000214; SK 283881 B6 20040406; TW 425429 B 20010311; WO 9802591 A1 19980122; ZA 976001 B 19980901
DOCDB simple family (application)
US 17170998 A 19981026; AT 97930498 T 19970703; AU 3442897 A 19970703; BR 9710302 A 19970703; CN 97194985 A 19970703; CZ 6899 A 19970703; DE 19628136 A 19960712; DE 59702901 T 19970703; EP 9703510 W 19970703; EP 97930498 A 19970703; ES 97930498 T 19970703; ID 972410 A 19970711; ID 972437 A 19970714; IN 1270CA1997 A 19970703; JP 50556598 A 19970703; PL 33116697 A 19970703; RU 99102692 A 19970703; SK 1899 A 19970703; TW 86109812 A 19970711; ZA 976001 A 19970704