### To the Problem of the Effectiveness of the Use of the Friction Reserve Forces at Continuous Rolling

#### Abstract

In the article the mathematical description of energy-power parameters are suggested for the analysis of the rolling process energy efficiency on continuous rolling mills as influenced by the technological parameters. Basis of the description is the law of conservation of energy, as the most general principle of the physical processes explanation. This law is presented as a power balance in the deformation zone at rolling, specifically as the balancing of power delivered to the deformation zone by work rolls from the actuating motor and interstand tension forces, and as the power spent on the plastic and elastic deformation of the metal, also as the force of friction between the surface of rolls and the wrought metal.

The obtained mathematical description is taken as a basis of the developed algorithm of graph-analytical method for calculating the efficiency of the continuous rolling process. We carried out the calculation of rolling efficiency change of the continuous rolling three-stand mill group, which showed the availability of the friction force reserve in the deformation zones of the rolling stands, as well as the efficiency of its use by force exertion from the ends of the strip.

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DOI: http://dx.doi.org/10.24892/RIJIE/20150106

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