Global Patent Index - EP 0375094 A3

EP 0375094 A3 19921223 - METHOD AND DEVICE FOR THE HOT-ROLLING OF STRIP

Title (en)

METHOD AND DEVICE FOR THE HOT-ROLLING OF STRIP

Publication

EP 0375094 A3 19921223 (DE)

Application

EP 89250129 A 19891222

Priority

  • DE 3843730 A 19881222
  • DE 3843731 A 19881222

Abstract (en)

[origin: EP0375095A2] The invention relates to a method and a device for controlling the strip width during the hot-rolling of strip on a multiple-stand finishing line of a rolling mill train in which the speeds of the working rolls of each stand are controlled as a function of the instantaneous operating state. Here, the strip widths are sensed directly after the last reduction per pass and/or before the penultimate reduction per pass and are compared with the desired width in a width controller. In the event of deviations, a strip-supply controller for the strip supply between the last stands is acted upon, which strip-supply controller, by adjusting the roll nips, corrects the strip supply and the tensile stress of the strip in such a way that the strip width changes. The method is optimized by additional control of the strip thickness according to the novel strip-supply principle as well as by dispensing with some loop lifters. <IMAGE>

IPC 1-7

B21B 37/02

IPC 8 full level

B21B 37/00 (2006.01); B21B 37/16 (2006.01); B21B 37/22 (2006.01); B21B 37/50 (2006.01); B21B 37/58 (2006.01); B21B 37/72 (2006.01)

CPC (source: EP)

B21B 37/165 (2013.01); B21B 37/22 (2013.01); B21B 37/50 (2013.01); B21B 37/72 (2013.01); B21B 2261/06 (2013.01); B21B 2271/02 (2013.01)

Citation (search report)

  • [A] US 4162624 A 19790731 - MOROOKA YASUO [JP], et al
  • [AD] DE 3637043 A1 19880505 - LICENTIA GMBH [DE]
  • [A] FR 2568496 A1 19860207 - LAMINAGE CONTINU STE LORRAI ME [FR]
  • [E] DE 3828495 A1 19900301 - BETR FORSCH INST ANGEW FORSCH [DE]
  • [A] PATENT ABSTRACTS OF JAPAN vol. 010, no. 187 (M-493)2. Juli 1986 & JP-A-61 030 211 ( FUJI ELECTRIC CO LTD ) 12. Februar 1986
  • [A] STAHL UND EISEN Bd. 99, Nr. 24, Dezember 1979, DÜSSELDORF DE Seiten 1361 - 1371 D.SCHOENERT 'Antriebs- und Regelprobleme kontinuierlicher Walzanlagen'
  • [A] PATENT ABSTRACTS OF JAPAN vol. 012, no. 039 (M-665)5. Februar 1988 & JP-A-62 192 206 ( NIPPON STEEL CORP ) 22. August 1987
  • [A] PATENT ABSTRACTS OF JAPAN vol. 012, no. 292 (M-729)10. August 1988 & JP-A-63 068 207 ( KOBE STEEL LTD ) 28. März 1988
  • [A] PATENT ABSTRACTS OF JAPAN vol. 007, no. 095 (M-209)21. April 1983 & JP-A-58 020 313 ( SUMITOMO KINZOKU KOGYO ) 5. Februar 1983
  • [A] PATENT ABSTRACTS OF JAPAN vol. 008, no. 35 (M-276)(1472) 15. Februar 1984 & JP-A-58 192 606 ( ISHIKAWAJIMA HARIMA JUGOGYO K.K. ) 10. November 1983

Designated contracting state (EPC)

AT BE DE FR GB IT LU NL SE

DOCDB simple family (publication)

EP 0375095 A2 19900627; EP 0375095 A3 19921223; EP 0375095 B1 19960131; AT E133591 T1 19960215; AT E142916 T1 19961015; DE 58909588 D1 19960314; DE 58909734 D1 19961024; EP 0375094 A2 19900627; EP 0375094 A3 19921223; EP 0375094 B1 19960918

DOCDB simple family (application)

EP 89250130 A 19891222; AT 89250129 T 19891222; AT 89250130 T 19891222; DE 58909588 T 19891222; DE 58909734 T 19891222; EP 89250129 A 19891222