근적외선 램프를 적용한 에너지 절감형 압출금형 예열기술 개발

Development of preheating technology on energy-saving extrusion dies applying infrared lamp

  • 투고 : 2016.12.21
  • 심사 : 2017.03.24
  • 발행 : 2017.03.31

초록

The aim of this study is to develop the dies oven for energy-saving during the pre-heated process of extrusion dies. Applying high-efficiency near-infrared heater, single cell type dies oven was developed as a substitute for traditional chest type oven. Therefore the dies is individually heated uniformly to operation temperature so rapidly. By using the developed dies oven, electric-energy consumption of preheating extrusion dies reduced up to 30% and the waiting time in the oven also minimized up to 90min. In addition, the results have shown that it is possible to accurately control the dies temperature for improving the quality of extruded profile and to minimize die bearing oxidation and nitride layer degradation responsible for surface defects on the profile and shorter die life.

키워드

참고문헌

  1. Usta, M., "The influence of thermal treatment on the cast structure of 6xxx aluminum alloys", Ph.D thesis, Rensselaer Polytechnic Institute, New York, 2001.
  2. J. L. Jorstad, "Future technology in Aluminum die casting", Die Casting Eng. 9, pp. 18-25, 2006.
  3. W. S. Miller, L. Zhuang, A. J. Wittebrood, "Recent Developnent in Aluminium Alloys for the Automotive Industry," Mater. Sci. Eng. A 280, pp. 37-49, 2000. https://doi.org/10.1016/S0921-5093(99)00653-X
  4. A. F. M. Arif, A. K. Sheikh, S. Z. Qamar, K. M. al-Fuhaid, "Modes of Die Failure and Tool Complexity Hot Extrusion of Al-6063", J. Mater. Process. Tech. 134, pp. 318-328, 2003. https://doi.org/10.1016/S0924-0136(02)01116-0
  5. W. A. Kortmann, "Failure in extrusion tooling: causes and methods of avoiding failures," Proc Aluminum 2000: 2nd Int. Congress of Aluminum, pp. 219-231, 1993.
  6. Y. Le Maoult, Y. Le Maoult, F. Schmidt, M. El Hafi, "Measurement and calculation of perform infrared heating", the 4th International Workshop on Advanced Infrared Technology and Applications, Firenze, 1997.
  7. S. Monteix, R. Diraddo, F. Schmidt, "Profiles infrared radiative heating in blow molding and thermoforming", PPS'98-North American Meeting, Toronto, 1998.
  8. S. Monteix, F. Schmidt, Y. Le Maoult, R. Ben Yedder, R. W. Diraddo, D. Laroche, "Experimental study and numerical simulation of perform or sheet exposed to infrared radiative heating", J. Mater. Process. Tech. 119, 90-97, 2001. https://doi.org/10.1016/S0924-0136(01)00882-2