한국정밀공학회지 (Journal of the Korean Society for Precision Engineering)

  • 제34권4호
  • /
  • Pages.237-241
  • /
  • 2017
  • /
  • 1225-9071(pISSN)
  • /
  • 2287-8769(eISSN)
한국정밀공학회 (Korean Society for Precision Engineering)
권호 표지
DOI QR코드

DOI QR Code

티타늄 합금 소재 저속 영역 극저온 가공 특성 연구

Study on Characteristics of Cryogenic Machining Process of Titanium Alloy at a Low Cutting Speed

  • 김도영 (울산과학기술원 기계공학과) ;
  • 김동민 (울산과학기술원 기계공학과) ;
  • 박형욱 (울산과학기술원 기계공학과)
  • Kim, Do Young (Department of Mechanical Engineering, Ulsan National Institute of Science and Technology) ;
  • Kim, Dong Min (Department of Mechanical Engineering, Ulsan National Institute of Science and Technology) ;
  • Park, Hyung Wook (Department of Mechanical Engineering, Ulsan National Institute of Science and Technology)
  • 투고 : 2017.02.16
  • 심사 : 2017.03.22
  • 발행 : 2017.04.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

Cryogenic machining uses liquid nitrogen (LN2) as a coolant. This machining process can reduce the cutting temperature and increase tool life. Titanium alloys have been widely used in the aerospace and automobile industries because of their high strength-to-weight ratio. However, they are difficult to machine because of their poor thermal properties, which reduce tool life. In this study, we applied cryogenic machining to titanium alloys. Orthogonal cutting experiments were performed at a low cutting speed (1.2 - 2.1 m/min) in three cooling conditions: dry, cryogenic, and cryogenic plus heat. Cutting force and friction coefficients were observed to evaluate the machining characteristics for each cooling condition. For the cryogenic condition, cutting force and friction coefficients increased, but decreased for the cryogenic plus heat condition.

키워드

참고문헌

  1. Narutaki, N., Murakoshi, A., Motonishi, S., and Takeyama, H., "Study on Machining of Titanium Alloys," CIRP Annals-Manufacturing Technology, Vol. 32, No. 1, pp. 65-69, 1983. https://doi.org/10.1016/S0007-8506(07)63362-9
  2. Hartung, P. D., Kramer, B., and Von Turkovich, B., “Tool Wear in Titanium Machining,” CIRP Annals-Manufacturing Technology, Vol. 31, No. 1, pp. 75-80, 1982. https://doi.org/10.1016/S0007-8506(07)63272-7
  3. Jawaid, A., Che-Haron, C., and Abdullah, A., "Tool Wear Characteristics in Turning of titanium Alloy Ti-6246," Journal of Materials Processing Technology, Vol. 92, pp. 329-334, 1999.
  4. Che-Haron, C., “Tool Life and Surface Integrity in Turning Titanium Alloy,” Journal of Materials Processing Technology, Vol. 118, No. 1, pp. 231-237, 2001. https://doi.org/10.1016/S0924-0136(01)00926-8
  5. Venugopal, K., Paul, S., and Chattopadhyay, A., “Growth of Tool Wear in Turning of Ti-6AL-4V Alloy Under Cryogenic Cooling,” Wear, Vol. 262, No. 9, pp. 1071-1078, 2007. https://doi.org/10.1016/j.wear.2006.11.010
  6. Johnson, G. R. and Cook, W. H., "A Constitutive Model and Data for Metals Subjected to Large Strains, High Strain Rates and High Temperatures," Proc. of the 7th International Symposium on Ballistics, pp. 541-547, 1983.
  7. Westbeook, J., “Temperature Dependence of Hardness of the Equi-Atomic Iron Group Aluminides,” Journal of the Electrochemical Society, Vol. 103, No. 1, pp. 54-63, 1956. https://doi.org/10.1149/1.2430233
  8. Sha, W. and Malinov, S., "Titanium Alloys: Modelling of Microstructure, Properties and Applications," Elsevier, 2009.
  9. Lee, W.-S. and Lin, C.-F., "High-Temperature Deformation Behaviour of Ti6Al4V Alloy Evaluated by High Strain-Rate Compression Tests," Journal of Materials Processing Technology, Vol. 75, No. 1, pp. 127-136, 1998. https://doi.org/10.1016/S0924-0136(97)00302-6
  10. Jovanovic, M., Tadic, S., Zec, S., Miskovic, Z., and Bobic, I., "The Effect of Annealing Temperatures and Cooling Rates on Microstructure and Mechanical Properties of Investment Cast Ti-6Al-4V Alloy," Materials & Design, Vol. 27, No. 3, pp. 192-199, 2006. https://doi.org/10.1016/j.matdes.2004.10.017
  11. Lee, S. C., Jung, W. S., and Paik, I. H., "Evaluation of Cutting Force and Surface Accuracy on Drilling Process by Temperature Variation," Proc. of KSPE Autumn Conference, pp. 895-898, 2001.
  12. Saglam, H., Yaldiz, S., and Unsacar, F., "The Effect of Tool Geometry and Cutting Speed on Main Cutting Force and Tool Tip Temperature," Materials & Design, Vol. 28, No. 1, pp. 101-111, 2007. https://doi.org/10.1016/j.matdes.2005.05.015
  13. Oxley, P. L. B., "The Mechanics of Machining: An Analytical Approach to Assessing Machinability," Ellis Horwood, pp. 136-182, 1989.
  14. Sutter, G. and List, G., "Very High Speed Cutting of Ti-6Al-4V Titanium Alloy-Change in Morphology and Mechanism of Chip Formation," International Journal of Machine Tools and Manufacture, Vol. 66, pp. 37-43, 2013. https://doi.org/10.1016/j.ijmachtools.2012.11.004
  15. Sun, S., Brandt, M., and Dargusch, M., “Characteristics of Cutting Forces and Chip Formation in Machining of Titanium Alloys,” International Journal of Machine Tools and Manufacture, Vol. 49, No. 7, pp. 561-568, 2009. https://doi.org/10.1016/j.ijmachtools.2009.02.008
  16. Vyas, A. and Shaw, M., “Mechanics of Saw-Tooth Chip Formation in Metal Cutting,” Journal of Manufacturing Science and Engineering, Vol. 121, No. 2, pp. 163-172, 1999. https://doi.org/10.1115/1.2831200
  17. Grosjean, A., Rezrazi, M., Takadoum, J., and Bercot, P., "Hardness, Friction and Wear Characteristics of Nickel-Sic Electroless Composite Deposits," Surface and Coatings Technology, Vol. 137, No. 1, pp. 92-96, 2001. https://doi.org/10.1016/S0257-8972(00)01088-4

피인용 문헌

  1. Determination of Flow Stress and Cutting Force Prediction of Ti-6Al-4V Material for 3D Printer using S-K Constitutive Equation vol.17, pp.6, 2018, https://doi.org/10.14775/ksmpe.2018.17.6.068