Continuous Constrained Bending with active friction forces based on double Conform process

Abstract

In this work was investigated the possibility of realization of severe plastic deformation with active friction forces through a continuous constrained bending based on the ECAP Conform process. The process of two-stage continuous constrained bending was simulated in grooved rolls for long size deformable copper alloy rods. A virtual decision has been proposed for a new continuous bending scheme with two zones of severe plastic deformation performed by two grooved rolls (feeding and output) and a bending channel with a roller between them. The accumulated degree and the non-uniformity of the effective strains in the deformed work-piece during the different stages of the process realization were analysed. A relationship between the diameter of continuous bending (the diameter of the bending channel with a roller) and the degree of accumulated effective strains was established.