US 11,674,197 B2
Combined continuous casting and metal strip hot-rolling plant
Luciano Vignolo, Udine (IT); and Mauro Guagnelli, Udine (IT)
Assigned to DANIELI & C. OFFICINE MECCANICHE S.P.A., Buttrio (IT)
Appl. No. 16/494,153
Filed by Danieli & C. Officine Meccaniche S.P.A., Buttrio (IT)
PCT Filed Mar. 15, 2018, PCT No. PCT/IB2018/051745
§ 371(c)(1), (2) Date Sep. 13, 2019,
PCT Pub. No. WO2018/167710, PCT Pub. Date Sep. 20, 2018.
Claims priority of application No. 102017000028768 (IT), filed on Mar. 15, 2017.
Prior Publication US 2020/0071793 A1, Mar. 5, 2020
This patent is subject to a terminal disclaimer.
Int. Cl. C21D 9/56 (2006.01); B21B 1/26 (2006.01); C21D 8/02 (2006.01)
CPC C21D 9/56 (2013.01) [B21B 1/26 (2013.01); C21D 8/0205 (2013.01); C21D 8/0226 (2013.01); C21D 2211/001 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A combined continuous casting and endless rolling plant for a metal strip, comprising
a continuous casting line for casting a slab;
a first rolling mill for roughing the slab and for obtaining a transfer bar;
a second rolling mill for finishing the transfer bar and for obtaining a strip;
accumulation means of the strip comprising at least one first high-capacity reel, dimensioned to wind and unwind a coil weighing from 80 to 250 metric tons and/or up to 6 meters in diameter, said coil being named mega coil;
characterized in that there are provided:
a third rolling mill, comprising at least two first rolling stands, for further reducing a thickness of the strip; said accumulation means of the strip being arranged downstream of said third rolling mill;
cutting means, arranged between said third rolling mill and said accumulation means, configured to cut the strip after the mega coil has been wound on the at least one first high-capacity reel;
a cutting and winding line, downstream of said accumulation means, for cutting the strip of the mega coil and winding portions of said strip of the mega coil up to a predetermined weight limit or coil diameter limit, producing a plurality of coils;
wherein said cutting and winding line is provided with a reversible rolling mill for performing at least one rolling of the strip before producing said plurality of coils.