SIMULATION OF THE ROUGHING PROCESSES

Abstract

When a metal strip is passed through a rolling mill to produce an appreciable reduction In thickness, the plastic deformation is generally large compared with the elastic deformation so that the material can be regarded as being rigid plastic .In the first instance the elastic deformation of the rolls may also be neglected. We tried to answer to the main question: how are the elastic contact stress and deformation between curved face in contact influenced by surface roughness? Many processes involve the passage of a strip or sheet of material through the nip between rollers. In this paper we consider the strip to be perfectly elastic and investigate the stress in the strip, the length of the arc of contact with the roller, the maximum indentation of the strip and the precise speed at which it feeds through the nip in relation to the surface speed of the rollers. If the strip is wide and the rollers are long in the axial direction it is reasonable to assume plane deformation