Patent ID: 6096146
Filing Date: 2000-08-01
Classification: B21B,C21D

Abstract:
Method for heat treating rolled stock leaving a rolling train (12), wherein the rolled stock (13) undergoes a rapid cooling treatment in a rapid cooling assembly (11) located immediately downstream of the last rolling pass, the first cooling step being followed by a temperature-equalisation step in air and at least by a second cooling treatment before being discharged and collected, the method being characterised in that the temperature-equalisation step in air and the at least second cooling treatment are set so as not to modify the surface crystalline structure or the inner crystalline structure of the rolled stock (13) which has formed at the outlet of the first cooling treatment, the at least second cooling treatment being followed by a short segment of temperature-equalisation in air and then directly by the collection of the rolled stock (13) into compact form, such as rolls, coils, bundles or packs, wherein the slow cooling of the rolled stock (13) collected in compact form leads to the transformation of the crystalline structure in the stable structures.