Abstract:

Equal cross section lateral extrusion (ECSLE) is an effective method realizing pure shear deformation. The in uence of friction factor on the deformation uniformity of ECSLE was investigated with rigid plastic nite element method. The result shows that the non-uniform deformation in extrusion is caused mainly by the friction be- tween workpiece and die. The higher the friction factor is, the more uneven plastic deformation resulted in extruded workpiece. The relation curve of deformation uni- formity vs. friction factor was drawn based on the analysis result. The curve can be used as a basis of ECSLE process design.

Key words: equal cross section lateral extrusion, strain, nite element method