Transactions of Materials Processing (소성∙가공)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
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An Optimum Design of Pipe Bending Process Using High Frequency Induction Heating and Dynamic Reverse Moment

고주파 유도가열 및 동적 반력 모멘트를 이용한 파이프 벤딩 공정의 최적설계

  • 이현우 (부산대학교 창의공학시스템학과) ;
  • 정성윤 (부산대학교 기계기술연구원) ;
  • 우타관 (부산대학교 기계공학부) ;
  • 김철 (부산대학교 기계기술연구원)
  • Received : 2009.11.16
  • Accepted : 2010.01.12
  • Published : 2010.04.01
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Abstract

The Pipe bending process using high frequency local induction heating is an advanced technique to bend pipes with a small bending radius and a large diameter. Even though the pipe bending process is a quite widespread engineering practice, it depends heavily upon trial and error method by field engineers with several years of experience. So it is necessary to develop an integrated methodology for optimum design of the pipe bending process. During hot pipe bending using induction heating, outward wall thickness of a pipe is thinned due to tensile stress and the reduction of wall thickness is not allowed to exceed 12.5%. Taguchi method and dynamic reverse moment is proposed to maintain a reduction ratio of thickness within 12.5%, when D/t ratio is high. An application of the proposed approach was compared with those of the finite element analysis and has good in agreements.

Keywords

References

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Cited by

  1. Fatigue characteristics of small radius pipe fabricated by pipe bending with induction local heating vol.10, 2011, https://doi.org/10.1016/j.proeng.2011.04.550
  2. Study on Optimization of Temperature Jump-Bending Process for Reducing Thickness Attenuation of Large-Diameter Steel Pipe vol.14, pp.4, 2015, https://doi.org/10.14775/ksmpe.2015.14.4.021