Journal of the Korean Society of Manufacturing Process Engineers (한국기계가공학회지)

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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Mechanical Effects of Pipe Drawing Angle and Reduction Rate on Material

파이프 인발 각도에 따른 기계적 효과 및 재료에 따른 감소율에 관한 연구

  • Seo, Youngjin (Department of Mechanical Engineering, Kumoh National Institute of Technology)
  • 서영진 (금오공과대학교 기계공학과)
  • Received : 2020.09.03
  • Accepted : 2020.10.12
  • Published : 2020.12.31
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Abstract

Seamless pipes are fabricated by drilling a hole in a cylindrical material and drawing the material to the desired diameter. These pipes are used in environments where high reliability is required. In this study, the pipe drawing process was simulated using DEFORM, a commercial finite element method (FEM) analysis program. The outer diameter of the steel cylinder used herein before drawing was 70 mm, and the target outer diameter was 58 mm. The drawing process consisted of two stages. In this study, the effect of cross-sectional reduction rate on the pipe was investigated by varying the cross-sectional reduction rate in each step to achieve the target outer diameter. The results of this study showed that the first section reduction rate of 26% and the second section reduction rate of 13.9% caused the lowest damage to the material. Moreover, the FEM simulation results confirmed the influence of the drawing die angle on the pipe drawing process. The drawing die angles of 15° in the first step and 9° in the second step caused the least damage to the material.

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References

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