A model for the run out table cooling in a compact rolling mill

A fundamental part of hot rolling of steel strip processing takes place in the run out table of industrial mills. It is in this place that most of the material transforms from austenite to ferrite. Cooling of the steel strip is promoted by high and low pressure water jets coining from different types of headers. The efficiency of such headers depends on the type of header, their flow and position, as well as the speed at which the strip is delivered from the rolling mill. Computer simulation is carried out by means of a two-dimensional finite difference model that takes into account the number, flow, position and type of headers used along the run out table. It is found that the cooling capacity of the headers is affected by the velocity of the hot rolled steel strip.