Formation of structure and properties in cooling of rolls of hot-rolled strips

Purpose: investigation of structural transformations of low-carbon and low-alloyed steels and development of a quantitative model of formation of the structure and properties of hot-rolled strips. It is established that the kinetics of spheroidization of pearlite in carbon and low-alloyed steels fits the equation of Avrami. A mechanism of formation of structurally free cementite is proposed. The obtained quantitative laws of structural transformations in the roll make it possible to predict the variation of the structure and properties of the rolled stock depending on its cooling conditions on the run-out table. The model of prediction of the structure and properties was used as part of the automatic control system of the hot-rolling mill 2500 of new Lipetsk Metallurgical PlantAvailable from VNTIC / VNTIC - Scientific & Technical Information Centre of RussiaSIGLERURussian Federatio