Transactions of Materials Processing (소성∙가공)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
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Process Design of Multi-Pass Shape Rolling for Manufacturing Piston Ring Wire

피스톤 링 제조용 선재의 다단 형상 압연공정 설계

  • 김남진 (부산대학교 기계공학부 정밀가공시스템전공) ;
  • 이경훈 (한국해양대학교 기관공학부) ;
  • 임상혁 (고려특수선재 이형선부서) ;
  • 이제문 (고려특수선재 이형선부서) ;
  • 김병민
  • Received : 2016.10.11
  • Accepted : 2016.12.19
  • Published : 2017.02.01
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Abstract

Multi-pass shape rolling is performed to produce long products of arbitrary cross-sectional shapes. In the past, the multi-pass shape rolling process has been designed by the trial and error method or the experience of experts based on the empirical approach. Particularly, the design of roll caliber in shape rolling is important to improve product quality and dimensional accuracy. In this paper, the caliber design and pass schedule of multi-pass shape rolling were proposed for manufacturing piston ring wire. In order to design roll caliber, major shape parameter and dimension was determined by analysis of various caliber design. FE-simulation was conducted to verify effectiveness of proposed process design. At first, forming simulation was performed to predict shape of the product. Then, fracture of the wire was evaluated by critical damage value using normalized Cockcroft-Latham criteria. The experiment was carried out and the results are within the allowable tolerance.

Keywords

References

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