Transactions of Materials Processing (소성∙가공)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
권호 표지
DOI QR코드

DOI QR Code

Development of a Closed-die Design with Backpressure to Forge Rotating Scrolls

압축기용 구동스크롤의 밀폐형 배압 금형 개발

  • Kim, Y.B. (Korea Institute of Industrial Technology, Metal Forming Technology R&D Group) ;
  • Jung, K.H. (Korea Institute of Industrial Technology, Metal Forming Technology R&D Group) ;
  • Lee, S. (Korea Institute of Industrial Technology, Metal Forming Technology R&D Group) ;
  • Kim, E. (Korea Institute of Industrial Technology, Metal Forming Technology R&D Group) ;
  • Lee, J. (Korea Institute of Industrial Technology, Metal Forming Technology R&D Group) ;
  • Choi, D.S. ;
  • Lee, G.A. (Korea Institute of Industrial Technology, Metal Forming Technology R&D Group)
  • 김용배 (한국생산기술연구원, 성형기술연구그룹) ;
  • 정기호 (한국생산기술연구원, 성형기술연구그룹) ;
  • 이상목 (한국생산기술연구원, 성형기술연구그룹) ;
  • 김응주 (한국생산기술연구원, 성형기술연구그룹) ;
  • 이종섭 (한국생산기술연구원, 성형기술연구그룹) ;
  • 최두순 (인하공업전문대학교, 기계설계과) ;
  • 이근안 (한국생산기술연구원, 성형기술연구그룹)
  • Received : 2013.03.21
  • Accepted : 2013.06.17
  • Published : 2013.07.01
Download PDF
⟨ Previous Next ⟩

Abstract

Scroll compressors are widely used in air conditioning systems and in automobiles due to their low pressure loss, minimal vibrations, and light-weight. Open-die forging with back pressure is used to forge the rotating scroll, and it requires special care since the forging die can be severely damaged at the fixed end of the spiral cavity similar to a fracture of a cantilever beam. To overcome the inevitable weakness of the forging die due to such damage, an innovative design is necessary. In this study, structural analysis using the finite element method was conducted to determine the reason for the fracture of the forging die. A novel design to avoid stress concentrations and vertical deflection, causing serious damage to the die, is suggested.

Keywords

References

  1. C. M. Chen, C. C. Yang, C. G. Chao, 2005, A Novel Method for Net-shape Forming of Hypereutectic Al-Si Alloys by Thixocasting with Powder Preforms, J. Mater. Process. Technol., Vol. 167, No. 1, pp. 103-109. https://doi.org/10.1016/j.jmatprotec.2004.10.001
  2. H. Ando, I. Matsumoto, 1988, Method of Manufacturing Scroll Members for use in a Rotary Compressor, Patent US 4720889 A.
  3. T. Tokuoka, T. Kaji, T. Nishioka, A. Ikegaya, 2006, Development of High-Strength, Heat-Resistant Aluminum Alloy Made by Powder Forging Process, SEI Tech. Rev., No. 61, pp. 70-76.
  4. M. Chikano, K. Sakurai, M. Matsunaga, 2011, Scroll Compressor, Patent US 20110103990 A1.
  5. M. Sato, F. Ohmi, Y. Ogura, 2004, Forged Scroll Part and Production Process Thereof, Patent US 6702907 B2.
  6. J. H. Lee, Y. S. Lee, S. H. Choi, S. Y. Lee, S. H. Han, 2001, A Heat Back Pressing Machine for Heat Forging of Al alloyed Scroll Rotor and Method Thereof, Patent KR 100461282.
  7. K. Osakada, T. Nakamura, 2005, Research and Development of Precision Forging in Japan, Proceeding of ITCP (VIII), Verona.