Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Development of Manufacturing Process for Long-Neck Flange by Spinning

스피닝을 이용한 롱넥플랜지의 성형공정 개발

  • Gwak, Gi Yeol (Department of Mechanical Engineering, Korea Maritime and Ocean University) ;
  • Cho, Jong Rae (Department of Mechanical Engineering, Korea Maritime and Ocean University) ;
  • Choi, Jin Young (Technical Service Team, Pessco Co., Ltd.)
  • 곽기열 (한국해양대학교 기계공학과) ;
  • 조종래 (한국해양대학교 기계공학과) ;
  • 최진영 ((주)페스코 기술서비스팀)
  • Received : 2015.08.28
  • Accepted : 2015.10.12
  • Published : 2015.11.01
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Abstract

The long neck flange is used to connect piping arrangements where the lap joint is applied. Generally, the component can be manufactured by welding, but this method is both time and cost intensive. Embrittlement at the heat affected zones was also considered. A spinning method developed to improve the manufacturing process and solve the problems of welding. The flange area of the long neck flange can be formed by changing the direction of the metal flow, from axial to radial, while maintaining pressure by using an outer mold and a lap roller. A modified process was additionally developed using a round roller rather than the outer mold. In this modification, the round roller can form the shape of all sizes of long neck flange. Using these flexible methodologies, the cost to prepare outer molds and the time to install and remove the molds can be significantly reduced.

Keywords

References

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