Global Patent Index - EP 1024204 A3

EP 1024204 A3 20040128 - Method of manufacturing a high Mn non-magnetic steel sheet for cryogenic temperature use

Title (en)

Method of manufacturing a high Mn non-magnetic steel sheet for cryogenic temperature use

Title (de)

Verfahren zum Herstellen eines nicht-magnetischen, hoch mangan enthaltenden Stahlblechs für kryogene Verwendungen

Title (fr)

Procédé de fabrication d'un acier non-magnétique à haute teneur en manganèse pour applications cryogéniques

Publication

EP 1024204 A3 20040128 (EN)

Application

EP 00101428 A 20000125

Priority

JP 1791299 A 19990127

Abstract (en)

[origin: EP1024204A2] A method of manufacturing a high Mn non-magnetic steel sheet having low permeability at a cryogenic temperature suitable for use in large scale particle accelerators, the method comprises rolling a steel material containing, on the wt% basis, from 0.05 to 0.18% of C, from 26.0 to 30.0% of Mn, from 5.0 to 10.0% of Cr, 0.05 to 0.15% of N and, optionally, from 0.50 to 5.0% of Ni, in which a rolling start temperature is from 1050 to 1200 DEG C and a rolling end temperature is from 700 to 1000 DEG C. Further, a cold rolled sheet is annealed at an annealing temperature for cold rolled sheet of from 1050 to 1200 DEG C and cooled after annealing, the annealed sheet being preferably applied with temper rolling under control for the strength by varying a draft ratio. <IMAGE>

IPC 1-7

C21D 8/02; C22C 38/38

IPC 8 full level

H01F 1/00 (2006.01); C21D 8/02 (2006.01); C21D 9/46 (2006.01); C22C 38/00 (2006.01); C22C 38/38 (2006.01); C22C 38/58 (2006.01)

CPC (source: EP)

C21D 8/0205 (2013.01); C22C 38/001 (2013.01); C22C 38/38 (2013.01); C22C 38/58 (2013.01); C21D 8/0226 (2013.01); C21D 8/0236 (2013.01); C21D 8/0263 (2013.01); C21D 8/0273 (2013.01)

Citation (search report)

  • [XA] WO 9703215 A1 19970130 - ULLAKKO KARI MARTTI [FI], et al
  • [A] US 4875933 A 19891024 - WAN CHI-MEEN [TW]
  • [A] US 5431753 A 19950711 - KIM TAI W [KR], et al
  • [A] EP 0174418 A2 19860319 - WESTINGHOUSE ELECTRIC CORP [US]
  • [XA] PATENT ABSTRACTS OF JAPAN vol. 018, no. 377 (C - 1225) 15 July 1994 (1994-07-15)
  • [XA] PATENT ABSTRACTS OF JAPAN vol. 010, no. 067 (C - 333) 15 March 1986 (1986-03-15)
  • [A] PATENT ABSTRACTS OF JAPAN vol. 1997, no. 06 30 June 1997 (1997-06-30)
  • [A] PATENT ABSTRACTS OF JAPAN vol. 018, no. 296 (C - 1209) 6 June 1994 (1994-06-06)
  • [A] PATENT ABSTRACTS OF JAPAN vol. 018, no. 271 (C - 1203) 24 May 1994 (1994-05-24)
  • [A] PATENT ABSTRACTS OF JAPAN vol. 1995, no. 06 31 July 1995 (1995-07-31)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

DOCDB simple family (publication)

EP 1024204 A2 20000802; EP 1024204 A3 20040128; JP 2000212646 A 20000802; JP 3864600 B2 20070110

DOCDB simple family (application)

EP 00101428 A 20000125; JP 1791299 A 19990127