(19)
(11) EP 0 872 288 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
07.04.1999 Bulletin 1999/14

(43) Date of publication A2:
21.10.1998 Bulletin 1998/43

(21) Application number: 98102462.3

(22) Date of filing: 12.02.1998
(51) International Patent Classification (IPC)6B21B 1/46
(84) Designated Contracting States:
AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 16.04.1997 US 843694

(71) Applicants:
  • Danieli United, A division of Danieli Corporation
    Pittsburgh, Pennsylvania 15220-2727 (US)
  • INTERNATIONAL ROLLING MILL CONSULTANTS, INC.
    Pittsburgh, Pennsylvania 15238 (US)

(72) Inventor:
  • Ginzburg, Vladimir B.
    Pittsburgh, PA 15238 (US)

(74) Representative: Grünecker, Kinkeldey, Stockmair & Schwanhäusser Anwaltssozietät 
Maximilianstrasse 58
80538 München
80538 München (DE)

   


(54) Long slab rolling process and apparatus


(57) A long slab rolling process and apparatus for producing a plurality of coils from a single slab, comprises at least one continuous caster producing a cast metal slab, means to cut the slab into discrete lengths for rolling, a reheat furnace, a slab welder, an edger, rough and finish rolling mills to produce hot rolled metal strip, a runout cooling table to cool the hot rolled strip, a pair of pinch rolls and a pair of strip deflector tables to deflect the rolled strip downwardly from the rolling line and, in conjunction with a slowing of the speed of the second pinch roll, to form a loop of strip, a flying shear disposed downstream of the loop and adapted to cut the strip, a part of which is directed onto a first coiler and a remaining portion of which is directed onto a second coiler. In one embodiment of the invention, a second caster and cutter produces second cut slab lengths which are transferred to the reheating furnace after a slab length from the first caster has exited the furnace, and the head end of the second slab length is welded to the tail end of the first slab length.







Search report