Patent ID: 7143499

Claim:
A process for producing steel strips and sheets, the process including, together with first cast products, rolling in a rolling mill at least second cast products produced in another process route, cooling the rolling product on a runout table and coiling the product on a coiler, the improvement comprising a first process route identical to the another process route comprising casting a strand in thin slab format from a carbon steel or a special steel in a casting machine and passing the cast products through a preheating furnace to produce a uniform temperature, wherein the second cast products are also thin slabs, further comprising, together with the first cast products, rolling at least the second cast products within a common rolling program, wherein a rolling program is the period of time between two roll changes, and wherein the second cast products are of special steel when the first cast products are cast from carbon steel or the second cast products are of carbon steel if the first cast products are cast from special steel; and, during and/or after the rolling operation on the products made of carbon steel, descaling the rolling mill and the surface of the product that is to be processed or that has already been rolled, and, during and/or after the rolling operation on the products made of special steel, reducing the developing roll surface roughness, further comprising finish-rolling the product in a finish-rolling step and coiling the product.