Rolling line and relative method

摘要

A rolling line for the production of flat product includes a casting machine to continuously case a thin slab, a temperature maintenance and homogenization unit, a rolling unit a forming stand or roughing stand connected to the exit of the casting machine to reduce the thickness of the slab. The forming stand or roughing stand is configured to perform an adaptive reduction of the thickness of the cast slab smaller than or equal to about 65% at least as a function of the thickness, width and type of material of the finished flat product. The rolling unit is configured to perform a reduction of the reduction of the thin slab coming from the temperature maintenance and homogenization unit to a thickness comprised between about 1.2 mm and about 20 mm by three or fewer double rolling passes through the double rolling stand.

主权项

1. A rolling line for production of flat products, comprising:
a casting machine suitable to continuously cast a thin slab; a temperature maintenance and homogenization unit; a rolling unit including a Steckel rolling train with two reversing stands downstream of the temperature maintenance and homogenization unit; at least one forming or roughing stand connected to the exit of the casting machine and upstream of the temperature maintenance and homogenization unit for reducing the thickness of the thin slab just solidified, the at least one forming or roughing stand being configured to perform an adaptive reduction of the thickness of the thin slab smaller than or equal to about 65% at least as a function of the thickness, width and type of material of the finished flat product, wherein the rolling unit is configured for performing at most three double rolling passes through the two reversing stands, wherein each of the double rolling passes includes a pass of the rolled product in a forward direction through the two reversing stands, and then a pass of the rolled product in an inverse to the forward direction through the two reversing stands, which reduces the thickness of the rolled product to produce a flat product having a final thickness between about 1.2 mm and about 20 mm; and a shearing unit disposed upstream of the at least one forming or roughing stand.