Browse > Article
http://dx.doi.org/10.7735/ksmte.2012.21.5.824

A Study on Roundness Improvement of Heat-treated Large Diameter Aluminum Tube-turning with Collet Type Jig  

Kim, Pyeong-Ho (부산대학교 대학원 기계공학부)
Lim, Hak-Jin ((주)풍산 방산기술연구소)
Lee, Jung-Min ((주)풍산 방산기술연구소)
Lee, Jong-Hwan (한국폴리텍항공대학 항공메카트로닉스과)
Kim, Jung-Suk (부산대학교 기계공학부/정밀정형 및 금형연구소(ERC/NSDM))
Publication Information
Journal of the Korean Society of Manufacturing Technology Engineers / v.21, no.5, 2012 , pp. 824-829 More about this Journal
Abstract
The purpose of this study is to evaluate the proposed jig for turning process of large-scale aluminum tube of D500mm through Finite Element Analysis (FEA). Also, a machining evaluation is conducted with general heat-treated and cryogenic heat-treated tubes. Dimensions of the specimens are determined to be suitable for collet appearance. The characteristics of equivalent stress and strain according to the expansion of the collet are evaluated by FEA. The aluminum tubes which are heat-treated by T4/T6 condition and cryogenic condition are machined by using a large-scale lathe machine and the roundness of machined tube is evaluated by using a 3D measuring machine. Through the results of this study, effects of each heat treatment and residual stress on the roundness are established.
Keywords
Cryogenic heat treatment; Roundness; Collet type jig; Large diameter aluminum tube;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 Kim, S. I., 2006, "A Study on the Cutting Characteristics of Al Alloy in End Milling for Various Hardnesses(I)," Transactions of KSMTE, Vol. 15, No. 1, pp. 82-87.
2 Park, K. J., Ko, D. H., Kim, B. M., Lim, H. J., Lee, J. M., and Cho, Y. R., 2010, "Effect of Cryogenic Treatment on Residual Stress and Tensile Properties for 6061 Al Alloy," Kor. J. Met. Mater., Vol. 49, No. 1, pp. 9-16.
3 Lee, H. I., Han, Y. S., Kim, D. H., and Kim W. T., 2009, Comprehension and Practical use of an Aluminum Application Technology, The Korea Metal Journal, Republic of Korea.
4 Jang, H. S., 1997, The handbook of advanced Aluminum Technology, Hanlimwon, Republic of Korea.
5 Kang, D. H., Lee, B. J., Yun, C. B,. and Kim, K. W., 2010, "Study on Torsional Strength of Induction Hardened Axle Shaft," Transactions of the KSME A, Vol. 34, No. 5, pp. 645-649.   DOI
6 Ian, M., 2004, Residual Stress Reduction During Quenching of Wrought 7075 Aluminum Alloy, A Thesis for a Master, Worcester Polytechnic Institute, United States.
7 Jeon, Y. S., Jang, S. M., and Kang S. G., 2010, "Influence of Fixed Pressure on the Machining Accuracy of Inner Diameter of Hollow Shaft," KSMTE, Vol. 19, No. 3, pp. 381-387.
8 Kim, H. S., and Lee, D. N., 1978, "Relief of Residual Quenching Stresses in 2024 Aluminum Alloy," Kor. J. Met. Mater., Vol. 16, No. 4, pp. 233-242.