초록 ▼

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 spee

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.

대표청구항 ▼

[ We claim:] [1.] A method for the continuous rolling of product, comprising:continuously casting pre-slabs in at least two continuous casting lines within a range of thickness of between 70 and 140 mm at a speed of 6-7 meters per minute;reducing the thickness of the pre-slabs by 5-40 mm by a proces

[ We claim:] [1.] A method for the continuous rolling of product, comprising:continuously casting pre-slabs in at least two continuous casting lines within a range of thickness of between 70 and 140 mm at a speed of 6-7 meters per minute;reducing the thickness of the pre-slabs by 5-40 mm by a process of soft-reduction to obtain thin slabs with a thickness of between 60 and 120 mm;heating the thin slabs;rolling the thin slabs from the at least two continuous casting lines in a roughing train;winding the rolled product into a coil;finishing the rolled product from the roughing train in a finishing train to form a product having a value of speed of the product leaving the finishing train, measured in m/min, multiplied by thickness of the product, measured in m/min, of between 800 and 1100 mm.ml/min; andwelding a leading end of the rolled product arriving at the finishing train with a trailing end of the product in the finishing train by means of a welding machine positioned upstream of the finishing train to form a substantially continuous product fed to the finishing train.