소성∙가공 (Transactions of Materials Processing)

한국소성∙가공학회 (The Korean Society for Technology of Plasticity and materials processing)
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인발 선재의 잔류응력에 미치는 공정변수의 영향 및 잔류응력 완화

Influence of Process Parameters on Residual Stress and Reducing Residual Stress in Drawn Wire

  • 이상곤 (부산대학교 대학원 정밀기게공학과) ;
  • 황원호 (부산대학교 대학원 정밀기게공학과) ;
  • 김병민 (부산대학교 정밀정형 및 금형가공 연구소) ;
  • 배철민 (POSCO 선재연구그룹)
  • 발행 : 2005.11.01
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초록

The influence of process parameters in drawn wire on residual stresses was investigated. Based on a FE-simulation of the wire drawing process, the effects of process parameters such as semi-die angle, reduction, friction coefficient and bearing length on the residual stresses were investigated. The validity of the FE-simulation results was verified by the comparison of the previous simulated results with experimental data. In this study, semi-die angle and die reduction have significant effect on the residual stresses at the surface of drawn wire. Several methods such as, addition of axial tension, application of skin pass, straightening in multi-roll straightener etc, were suggested in the previous studies to reduce the residual stresses. In this study, the results show that the concurrent application of skin pass with low die reduction and low semi-die angle at the final stage of drawing operation reduces dramatically the both axial and hoop residual stresses after drawing

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참고문헌

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