Design & Manufacturing

Korean Society of Die & Mold Engineering (한국금형공학회)
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Analysis of computational fluid dynamics on design of nozzle for integrated cryogenic gas and MQL(minimum quantity lubrication)

극저온 가스와 MQL(minimum quantity lubrication)의 복합 분사를 위한 하이브리드 노즐 설계에 관한 전산유체역학 해석

  • Song, Ki-Hyeok (Department of Mechanical Engineering, Inha University) ;
  • Shin, Bong-Cheol (Department of Mechanical Engineering, Inha University) ;
  • Yoon, Gil-Sang (Molds & Dies Technology R&B Group, Korea Institute of Industrial Technology) ;
  • Ha, Seok-Jae (Molds & Dies Technology R&B Group, Korea Institute of Industrial Technology)
  • 송기혁 (인하대학교 기계공학과) ;
  • 신봉철 (인하대학교 기계공학과) ;
  • 윤길상 (한국생산기술연구원 금형기술그룹) ;
  • 하석재 (한국생산기술연구원 금형기술그룹)
  • Received : 2019.09.17
  • Accepted : 2019.09.30
  • Published : 2019.09.30
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Abstract

In conventional machining, the use of cutting fluid is essential to reduce cutting heat and to improve machining quality. However, to increase the performance of cutting fluids, various chemical components have been added. However, these chemical components during machining have a negative impact on the health of workers and cutting environment. In current machining, environment-friendly machining is conducted using MQL (minimum quantity lubrication) or cryogenic air spraying to minimize the harmful effects. In this study, the injection nozzle that can combined injecting minimum quantity lubrication(MQL) and cryogenic gas was designed and the shape optimization was performed by using computational fluid dynamics(CFD) and design of experiment(DOE). Performance verification was performed for the designed nozzle. The diameter of the sprayed fluid at a distance of 30 mm from the nozzle was analyzed to be 21 mm. It was also analyzed to lower the aerosol temperature to about 260~270K.

Keywords

References

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