Development of a model for determining the friction factor for a fi ve-cell continuous hot rolling mill 2800

The study is devoted to improving the friction factor calculation model for a continuous fi ve-cell hot rolling mill 2800. A new analytical relationship has been developed that takes into account key technological parameters: lubrication viscosity, rolling speed, material resistance to deformation, and the length of the deformation site. The model demonstrated high accuracy (R2=0.93). The introduction of the model into the automatic process control system made it possible to optimize the thickness control process, due to which the areas with thickness deviations on the hot-rolled billet are reduced by 3 -4 times, and the yield of suitable products was increased by 2%. The results are of great practical importance for the automation of hot rolling processes of aluminum alloys.