Study of Orientation of Triangular and Square die hole profiles on Extrusion Load in Multi-hole Extrusion process

Abstract

The multi-hole extrusion process is an extrusion process with a die having more than one hole. The multi-hole extrusion process is used to extrude more than one product from the same billet with less extrusion load. Different die profiles are used to get different extruded profiles as per the need. Different profiles such as circular, triangular, square etc., are used. The symmetric die hole profiles are easy to fabricate on the extrusion die but the location and positioning of other types of hole profiles like triangular and square need attention as they cause different material flow behavior during material flow. In the present study, triangular and square dies of 2-hole, 3-hole and 4-hole with different orientations of apex and edges have been used to study the extrusion load behavior. Both finite element analysis and experimental study reveals that square hole dies need less extrusion load than that of triangular ones.

Keywords

• multi-hole extrusion
• extrusion load
• triangular hole die
• square hole dies