극저온 가스와 MQL(minimum quantity lubrication)의 복합 분사를 위한 하이브리드 노즐 설계에 관한 전산유체역학 해석
Analysis of computational fluid dynamics on design of nozzle for integrated cryogenic gas and MQL(minimum quantity lubrication)
0
조회
0
다운로드
1
인용
0
참고문헌
키워드
초록
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.
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.
참고문헌 (21)
- M'Saoubi, R, "High Performance Cutting of Advanced Aerospace Alloys and Composite Materials", CIRP Annals-Manufacturing Technology, 64(2), pp.557~580 (2015)
- Veiga, C., "Properties and Applications of Titanium Alloys: A Brief Review", Journal Reviews on Advanced Materials Science, 32(2), pp.133~148 (2012)
- "Technological and Sustainability Implications of Dry, Near-Dry, and Wet Turning of Ti-6Al-4V Alloy", ~
- Klocke, F., "Thermo-Mechanical Tool Load during High Performance Cutting of Hard-to-Cut Materials", Procedia CIRP, 1, pp.295~300 (2012)
- B. Denkena, "Effects of the cutting edge microgeometry on tool wear and its thermo-mechanical load", CIRP, 60(S), pp.73~76 (2011)
- Gerez, J.M., "A SEM and EDS based Study of the Microstructural Modifications of Turning Inserts in the Dry Machining of Ti6A14V Alloy", AIP Conf. Proc., 1181, pp.567~574 (2009)
- Abele E., "High speed milling of titanium alloys", Adv Prod Eng Manag, 3, pp.131~140 (2008)
- M. El Baradie, "Cutting fluids: Part I. characterisation", J Mater Process Technol, 56(1–4), pp.786~797 (1996)
- 박동욱, "절삭유(Metalworking Fluids)의 발암성에 대한 고찰", 한국정밀공학회지, 20(1), pp.34~ (2003), 한국정밀공학회
- U.S. Department of Health and Human Services, "Occupational Exposure to Metalworking Fluids", NIOSH Publication, No. 98-102, ~ (1998)
- F. Meza, "Investigation of respiratory and dermal symptoms associated with metal working fluids at an aircraft engine manufacturing facility", Am J Ind Med, 56(12), pp.1394~1401 (2013)
- A. Shokrani, "Environmentally conscious machining of difficult-to-machine materials with regard to cutting fluids", Int J Mach Tools Manuf, 57, pp.83~101 (2012)
- V. P. Astakhov., "Ecological machining: near dry machining", Mechanics of machining: FEM simulation machining, ~ (2009)
- Pereira, O, "Cryogenic and Minimum Quantity Lubrication for an Eco-Efficiency Turning of AISI 304", Journal of Cleaner Production, 139, pp.440~449 (2016)
- Qinglong An, "Cooling Effects of Cold Mist Jet with Transient Heat Transfer on High‑Speed Cutting of Titanium Alloy"
- Octavio Pereira, "Design for Combined Use of MQL and Cryogenic Gas in Machining"
- Bradshaw. P, "Effects of Streamline Curvature on Turbulent Flow", AGARDograph, ~ (1990)
- Michele Trancossi, "MATHEMATICAL MODELLING OF A TWO STREAMS COANDA EFFECT NOZZLE", ASME International Mechanical Engineering Congress and Exposition, pp.1~10 (2013)
- D. W. Lee, "A Study on the Flow Characteristics of Air Knife in Hot-Dip Galvanizing", Master’s, pp.2007
- 안종곤, "전동차 출입문에 장착한 에어커튼의 열에너지 차단효과에 관한 연구", 석사, 철도차량공학, pp.2005
- Y.T. Ge, "Simulation of the performance of single jet air curtains for vertical refrigerated display cabinets", Applied Thermal Engineering, 21, pp.201~219 (2001)