A New Low Friction Die Design for Equal Channel Angular Extrusion

Traian Canta; Dan Frunză; Eniko Szilagyi; Magdalena Lungu

doi:10.4028/www.scientific.net/KEM.367.215

Paper Titles

Input Parameters Determination for Predicting Ram Speed and Billet Temperature for the First Billet
p.161

Creep and Fatigue Damage in Hot Work Tools Steels during Copper and Aluminium Extrusion
p.169

Microscopic Examination of the Fracture Surfaces of an H 13 Hot Extrusion Die due to Failure at the Initial Usage Stage
p.177

Simulation of Direct Extrusion Process and Optimal Design of Technological Parameters Using FEM and Artificial Neural Network
p.185

Numerical Simulation of Combined Forward-Backward Extrusion
p.193

Mechanical Solutions for Hot Forward Extrusion under Plane Strain Conditions by upper Bound Method
p.201

Different Possibilities of Process Analysis in Cold Extrusion
p.209

A New Low Friction Die Design for Equal Channel Angular Extrusion
p.215

Modeling Approach for Determination of Backward Extrusion Strain Energy on AlCu5PbBi
p.221

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A New Low Friction Die Design for Equal Channel Angular Extrusion

Abstract:

The paper presents the experimental results on an aluminum alloy and a silver alloy processed by equal channel angular extrusion in order to refine the grains. Two type of extrusion dies have been used for experimental works: one with fixed walls and the other one with movable walls in order to reduce the friction during extrusion process. The new concept of the die consists in simultaneously pressing of two samples in one entering channel with two opposite exit channels. The channel geometry, friction contact, strain rate, extrusion load and micro structure aspects are presented.