소성∙가공 (Transactions of Materials Processing)

  • 제10권4호
  • /
  • Pages.329-337
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  • 2001
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  • 1225-696X(pISSN)
  • /
  • 2287-6359(eISSN)
한국소성∙가공학회 (The Korean Society for Technology of Plasticity and materials processing)
권호 표지

작은 곡률반경 파이프 벤딩을 위한 열간 파이프 벤딩공정 해석 및 설계

Analysis and Process Design of Hot Pipe Bending Process With Small Bending Radius

  • 류경희 (부산대학교 정밀기계공학과) ;
  • 김동진 (부산대학교 정밀정형 및 금형가공 연구소) ;
  • 김병민 (부산대학교 정밀정형 및 금형가공 연구소) ;
  • 이동주 ((주)현대중공업)
  • 발행 : 2001.08.01
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초록

The finite element simulation model and the program to calculate the reverse moment have been developed to analyse the stress state and deformation of pipe bending using local induction heating with small bending radius in this study. The reverse moment that is to be applied on the bending arm to control the wall thinning ratio of the bending outside to within a particular value. Even though the demand of pipes with small bending radius is increasing in power plants and ship buildings, the welded elbows are still widely used. The bending process with or without a reverse moment acting on the bending arm has been simulated. The reverse moments calculated from the developed program are in good agreement with the finite element simulations and the experiments.

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참고문헌

  1. IAMI v.1 A new bending technique for large diameter pipe T. behne
  2. Power v.1 Inductive bending machine seeks to reduce number of welds in nuclear piping system W. OKeefe
  3. Energy Dev. v.12 The production of pipe bends for power stations by the induction heating H. Blume;W. E Speth;K. Bredenbruch(et al.)
  4. Proc. 4th Adv. Technol. of Plasticity Theoretical analysis of bending of tube having ununiform distribution of temperature by high frequency induction heating S. Kuriyama;T. Aida
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  6. Proc. 24th Int. Mach. Tool. Des. Res. Conf. Analysis in workbility of pipe bending using high frequency induction heating H. Asao;K. Okada;M. Wananabe;H. matsumoto(et al.)
  7. J. JSTP v.33 no.372 Prevention of reduction of Wall Thickness in Tube Bending Using High Frequency Induction Heating H. Asao;K. Okada(et al.)
  8. J. Mat. Process. Thechnol. v.91 Computer simulation of pipe-bending process with small bending radius using local induction heating Z. Hu;J. Q. Li
  9. J. JSTP v.28 no.313 Numerical analysis of bending force in tube bending using frequency induction heating-investigation of metal forming local heating H. Asao;K. Okada(et al.)