Global Patent Index - EP 0811435 A3

EP 0811435 A3 19980506 - Presetting for a cold mill reversing stand

Title (en)

Presetting for a cold mill reversing stand

Title (de)

Voreinstellung für Kaltwalzreversiergerüst

Title (fr)

Préréglage pour laminoir réversible à froid

Publication

EP 0811435 A3 19980506 (DE)

Application

EP 97108853 A 19970603

Priority

DE 19622825 A 19960607

Abstract (en)

[origin: EP0811435A2] The method concerns presetting of the control element positions in a reversing cold-rolling stand or section for the first pass of a strip from a new coil. Proceeding from strip planarity considerations, the control element positions are set according to the corresponding data of the first pass of a reference coil which is chosen from 'n' previously rolled strip coils and whose reference data best agrees with the target data of the new coil. The new positions of individual control elements include alterations depending on differences between the reference and target data. The control element positions in a reversing rolling stand, or in a rolling section after a stoppage, are based on the corresponding data referring to the situation immediately before the stoppage. They include alterations depending on differences between the reference and target data. Alteration of the control element positions is carried out on the basis of rolling gap model or a process parameter system. This includes consideration of certain influences of the planarity and rolling force data. The strip thickness is predetermined by specification of a rolling force or roll setting adapted to the reference data (which covers a certain time interval) concerning the rolling stand or section. This data includes the rolling force, gap setting, entry thickness, exit thickness and/or strip tension.

IPC 1-7

B21B 37/28; B21B 37/16

IPC 8 full level

B21B 39/32 (2006.01); B21B 37/00 (2006.01); B21B 37/16 (2006.01); B21B 37/28 (2006.01); B21B 1/36 (2006.01)

CPC (source: EP US)

B21B 37/00 (2013.01 - EP US); B21B 37/16 (2013.01 - EP US); B21B 37/28 (2013.01 - EP US); B21B 1/36 (2013.01 - EP US); B21B 2265/12 (2013.01 - EP US); B21B 2265/22 (2013.01 - EP US); B21B 2271/02 (2013.01 - EP US)

Citation (search report)

  • [XY] PATENT ABSTRACTS OF JAPAN vol. 096, no. 001 31 January 1996 (1996-01-31) & US 5680784 A 19971028 - TATENO JUNICHI [JP], et al
  • [YA] PATENT ABSTRACTS OF JAPAN vol. 012, no. 098 (M - 680) 31 March 1988 (1988-03-31)
  • [A] PATENT ABSTRACTS OF JAPAN vol. 006, no. 236 (M - 173) 25 November 1982 (1982-11-25)
  • [A] PATENT ABSTRACTS OF JAPAN vol. 096, no. 005 31 May 1996 (1996-05-31)
  • [A] PATENT ABSTRACTS OF JAPAN vol. 017, no. 520 (M - 1482) 20 September 1993 (1993-09-20)
  • [A] PATENT ABSTRACTS OF JAPAN vol. 013, no. 282 (M - 843) 28 June 1989 (1989-06-28)
  • [A] CARLTON A J ET AL: "AUTOMATION OF THE LTV STEEL HENNEPIN TANDEM COLD MILL", IRON AND STEEL ENGINEER, vol. 69, no. 6, 1 June 1992 (1992-06-01), pages 17 - 28, XP000287498
  • [A] SERRANO A ET AL: "PREREGLAGE AUTOMATIQUE POUR LAMINOIRS REVERSIBLES *", CAHIERS D'INFORMATIONS TECHNIQUES DE LA REVUE DE METALLURGIE, vol. 87, no. 7 / 08, 1 July 1990 (1990-07-01), pages 669 - 679, XP000163066

Designated contracting state (EPC)

FR GB SE

DOCDB simple family (publication)

EP 0811435 A2 19971210; EP 0811435 A3 19980506; EP 0811435 B1 20010905; DE 19622825 A1 19971211; DE 19622825 B4 20050331; JP 3996976 B2 20071024; JP H1052706 A 19980224; US 5987948 A 19991123

DOCDB simple family (application)

EP 97108853 A 19970603; DE 19622825 A 19960607; JP 16659997 A 19970609; US 86891797 A 19970604