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Study on Optimization of Temperature Jump-Bending Process for Reducing Thickness Attenuation of Large-Diameter Steel Pipe

대구경 곡관 두께감소율 제어를 위한 온도점프 벤딩 공정의 최적화에 관한 연구

  • Xu, Zhe-Zhu (School of Mechanical & Aerospace Engineering(ERI), Gyeongsang National University) ;
  • Kim, Lae-Sung (Creative Aero-IT-Mech Convergence Eng. Education Program, Gyeongsang National University) ;
  • Jeon, Jeong-Hwan (Department of Industrial & Systems Eng.(ERI), Gyeongsang National Univ.) ;
  • Liang, Long-Jun (School of Mechanical & Aerospace Engineering(ERI), Gyeongsang National University) ;
  • Choi, Hyo-Gyu (JH LTD.) ;
  • Lyu, Sung-Ki (School of Mechanical & Aerospace Engineering(ERI), Gyeongsang National University)
  • 허철수 (경상대학교 기계항공공학부(공학연구원)) ;
  • 김래성 (경상대학교 창의적항공IT기계융합사업단) ;
  • 전정환 (경상대학교 산업시스템공학부) ;
  • 양용군 (경상대학교 기계항공공학부(공학연구원)) ;
  • 최효규 ((주)제이에이치) ;
  • 류성기 (경상대학교 기계항공공학부(공학연구원))
  • Received : 2015.08.05
  • Accepted : 2015.08.13
  • Published : 2015.08.31

Abstract

Induction bending is a method that allows the bending of any material that conducts electricity. This technology applies a bending force to a material that has been locally heated by an eddy current induced by a fluctuating electromagnetic field. Induction bending uses an inductor to locally heat steel through induction. This results in a narrow heat band in the shape to be bent. In general, the reduction of thickness attenuation of a large-diameter steel pipe is not allowed to exceed 12.5%. In this paper, in order to meet the standard of thickness attenuation reduction, a non-uniform heating temperature jump-bending process was investigated. As a result, the developed bending technique meets the requirements of thickness attenuation reduction for large-diameter steel pipes.

Keywords

References

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