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Effect of Process Parameters on Rectangular Cup Impact Extrusion of an AA1070 Aluminum Alloy

AA1070 알루미늄 합금의 사각형상 충격압출 성형에 미치는 공정 조건의 영향

  • Received : 2015.04.01
  • Accepted : 2015.07.13
  • Published : 2015.10.01

Abstract

Impact extrusion is an economical and productive process that can replace the multistage deep drawing process for producing deep rectangular cases. In the current work, a three-dimensional finite element analysis of the impact extrusion process of a commercial purity aluminum alloy (AA1070) was performed to predict loads, material flow, and deformed shapes using the Hansel-Spittel rheology law, which describes the flow stress at various temperatures and strain rates. The role of various process parameters such as friction, clearance between punch and die, aspect ratio and thickness of billet on the process and the shapes was analyzed.

Keywords

Impact Extrusion;Deep Rectangular Case;Friction;Clearance;Aspect Ratio;Thickness;Finite Element Analysis