Method for the continuous rolling of plate and/or strip and the

Details Method for the continuous rolling of plate and/or strip and the Method for the continuous rolling of plate and/or strip and the

1997-03-17

1999-07-20

Hail, III, Joseph J.

Metal working

Method of mechanical manufacture

Combined manufacture including applying or shaping of fluent...

295266, 29 33B, 29 33C, B22D 1100

Patent

active

059241845

ABSTRACT:
Method and relative line for the continuous rolling of plate and/or strip, starting from at least two lines for the continuous casting of thin slabs (11) of between 60 and 120 mm thick, the pre-slabs being continuously cast within a limited range of thicknesses of between 70 and 140 mm and at a speed of up to 6+7 meters per minute, the pre-slabs then being transformed into slabs by a process of soft-reduction (112) which reduces the thickness of the individual pre-slab by 5 to 40 mm so as to obtain a range of slabs with a defined thickness using the the same crystallizer, and the rolled product (111) now in a strip leaving the roughing train (17) being sent to the finishing train (20), the leading end of the strip as it arrives being connected to the trailing end of the strip being rolled so as to form a substantially continuous product fed to the finishing train (20), the connection being made by a welding machine (24) positioned upstream of the finishing train (20), the end-of-rolling temperature being between 840 and 880.degree. C. and the product of the speed of the strip at the outlet of the finishing train, multiplied by the thickness of the strip being between 800 and 1100 mm.m/min.

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