Transactions of Materials Processing (소성∙가공)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
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Investigation of the Final-Stage Forward Extrusion of Regular Polygonal-Shaped Bars From Circular Billets Using Square Die

평금형을 이용한 원형 소재에서 다각형바의 최종단계 전방압출에 관한 연구

  • 김동권 (한국중공업(주) 기술연구소) ;
  • 조종래 (한국중공업(주) 기술연구소) ;
  • 배원병 (분산대학교 기계설계공학과)
  • Published : 1995.03.01
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Abstract

A simple kinematically admissible velocity field is proposed to determine the final-stage extrusion load and the average extruded length in the square-die forward extrusion of regular polygonal-shaped bars from circular billets. From the proposed velocity field, the upper-bound extrusion load and the average extruded length are determined by minimizing the total power consumption with respect to four parameters. Experiments have been carried out with hard solder billets at room temperature. The theoretical predictions of the extrusion load are in good agreements with the experimental results and there is generally reason able agreement in average extruded length between theory and experiment.

Keywords

References

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