Issue 37

U. Muhin et alii, Frattura ed Integrità Strutturale, 37 (2016) 318-324; DOI: 10.3221/IGF-ESIS.37.42 320 p îï í t x y x B y x B B v v         )( , p îò í t x y x B y x B v v          )(  , (4) where p - the variable parameter. Speed Vx is determined by the law of the constancy of the second volumes:  cos 1 11 0 00 í í â x x x Bhv Bhv Bhv Bhv    , (5) where: V a - the peripheral speed of the work roll;  - neutral corner; R - radius of the work roll; 2 1 cos        R x í  . Figure 1 : Design scheme. Using well-known relations of the theory of plasticity, and acting in the same way as in [2-3], we find an expression for the intensity of the strain rate, the capacity of the internal resistance and friction, shear and tension. Compared with the model [2-3] in the developed model will be power cut in the neutral section and the power of the front and back tension. Obtain a system of three equations:                                     0 ) ( 0 ) ( 0 5 4 3 2 1 5 4 3 2 1 5 4 3 2 1 N N N N N B N N N N N B N N N N N p t , (6) System (6) is a mathematical model of the process of broadening the rolled strip, which can be used to study the distribution of the broadening in the deformation as a function of various parameters of rolling and strip, including the tension.