M.L.P. Machado, J.D. Filho, and J. Fagundes, Jr. (Brazil)
Thermomicrostructural Model, Hot Strip Mill Modelling,Microstructural Model.
Using industrial data and a thermomicrostructural model
in a computational program, a sensibility analysis has
been made by means of changing the thickness, steel
temperature and work roll speed in the stand.
With this, the effect of these disturbances on the
properties of the steel has been analyzed, such as, the
mean flow stress, grain size and hot strip temperature in
each stand and the influence on the others stands.
The model showed that an increase on entry thickness
increases the mean flow stress and increases the hot strip
temperature at any of the stands, this can promote
dynamic and metadynamic recrystallization in the next
The increase on entry temperature of the material reduces
significantly the mean flow stress and increases the grain
size and these effects are also transferred to the next
Accompanying the austenite grain size from each stand
was a good way to identify the final of the dynamic