THE COURSE OF STRESSES AND VELOCITIES IN BILLET ROLLING
Abstract
In billet rolling the tensile stress between the rolling stands has a substantial influence on the rolling product. The course of stresses and velocities in billet rolling is a very interesting topic of bulk forming. Principally, rolling mill engineers are substantially interested in the area of the cross section of the rolled stock.
With respect to a trouble free processing it must be within the demanded tolerances of measurement and is influenced by the tensile stresses between the rolling stands. Furthermore, rolling forces and rolling torque depend on the combination of the several rolling stands. Rolling forces, torque, tensile stresses as well as the area of the cross section of the rolling material are of main interest in billet rolling.
This paper deals with the course of the above mentioned parameters in a roughing train. As the several stands of a roughing train are mutually influenced, two joined stands have been investigated together. The effects of the second stand on the first stand are shown. To gain variable rolling conditions the numbers of revolutions of the rolls of the second stand have been varied. The following introduced numerical simulation has been performed by means of the finite element programme DEFORM 3D.
Keywords: course of rolling forces|torque|longitudinal stresses|area of the cross section|
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