Original scientific paper

Radial extrusion of gear like components – numerical analysis and experiment

Miroslav Plančak orcid.org/0000-0001-9035-7879 ; Faculty of Technical Sciences, Department for Production Engineering, University of Novi Sad, Trg Dositeja Obradovića 6, 21000 Novi Sad, Serbia
Malgorzata Rosochowska ; Advance Forming Research Centre, University of Strathclyde, 85 Inchinnan Drive, PA4 0LJ Renfrew, United Kingdom
Plavka Skakun ; Faculty of Technical Sciences, Department for Production Engineering, University of Novi Sad, Trg Dositeja Obradovića 6, 21000 Novi Sad, Serbia

Abstract

In this paper investigations of cold radial extrusion of gear-like components are presented. Focus has been placed on load requirement, metal flow during extrusion, die filling and strain distribution within the deformation zone. Two different geometries of gear-like components were considered: with straight radial, straight tapered and with straight parallel flank profile. Extrusion load exhibits three different phases: initial steep rise, gradual load development (steady extrusion state) and rapid load rise at the end of the process when corner filling takes place. Material flow is characterized by occurrence of "double barrelling" of free profile surfaces due to friction which exists at the die-material surfaces. The highest strain values were observed in the root of the teeth while in the middle part of the workpiece lower strain values appear. In numerical FE analysis DEFORM 3D, Ver. 10.2 software was employed. For the experimental investigation special tool has been designed and made. Aluminium billets were applied.

Keywords

die filling; radial extrusion; strain distribution

Hrčak ID:

109800

URI

https://hrcak.srce.hr/109800

Publication date:

25.10.2013.

Article data in other languages: croatian

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