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Extrusion Die Development of Interior & Exterior Parts for High Speed Train on Aluminum Alloys and Controls of Extrusion Conditions

고속전철 내·외장재용 알루미늄 합금의 압출 금형 개발 및 압출 조건의 제어

  • Kim, Kee Joo (Department of Mechatronics Engineering, Tongmyung University)
  • 김기주 (동명대학교 메카트로닉스공학과)
  • Received : 2018.04.25
  • Accepted : 2018.07.06
  • Published : 2018.07.31

Abstract

The important thing in extrusion technology is the design and production of molds. Appropriate design of the molds is essential for achieving the desired extrusion of molds at the same time to maximize the life of the molds and increase their efficiency. The extrusion temperature and extrusion speed are the main parameters at the time of extrusion. Different extrusion conditions should be added depending on the extrusion ratio, physical properties of the material, and type of extrusion. In this study, the extrusion process of various 6xxx series aluminum cast alloys for high speed train interior or exterior parts were investigated. The extruded die design was performed for the 6063, 6061, 6N01, 6005, 5083 and 6060 alloy profiles and an extrusion test was conducted. In addition, the extrusion conditions, such as extrusion pressure following as the billet temperature, extrusion temperature, and materials change, were analyzed. Although the 6063 aluminum alloy can be extruded at the lowest temperature and pressure, the 6061 alloy can be extruded at the highest temperature and pressure. From these results, the successful extruded products were manufactured from these established conditions.

압출기술에서 중요한 것은 금형의 설계 및 제작이며, 원하는 형태의 압출이 원활히 이루어지는 동시에 금형의 수명을 최대한 연장하고 효율성을 높이기 위한 금형의 설계가 필수적이다. 압출 온도, 압출 속도 등이 압출시의 주된 변수이며, 압출비 및 재료의 물성, 압출 형태에 따라 각기 다른 조건이 부가되어야 한다. 본 연구에서는 고속전철 내외장재 부품용 알루미늄 6xxx 계열 주조 합금의 압출공정에 대해 연구하였다. 6063, 6061, 6N01, 6005, 5083 and 6060 알루미늄 합금의 압출 금형 단면을 설계하였으며 이에 대한 실험을 실시하였다. 또한, 빌렛온도, 압출온도 및 재료의 변화에 따른 압출 압력과 같은 압출 조건들을 분석하였다. 6063 알루미늄 합금이 가장 낮은 온도와 압력에서 압출이 가능한 반면 6061 합금은 가장 높은 온도와 압력에서 압출이 가능하였다. 이들 실험결과로부터 수립된 조건들을 이용하여 성공적인 압출제품을 제조할 수 있었다.

Keywords

References

  1. Kim, K. J., "Extrusion Process Development of Light-Weight Interior & Exterior Parts for High Speed Train on Aluminum Alloys", Transaction of KSMT, as submitted.
  2. Sung, C. W. and Paik, Y. N., "Hydro-Forming Simulation of Automotive Rear Sub-frame Cross Members", KSMT, vol. 10, no. 2, pp. 1-5, 2008.
  3. Kim, K. J. and Won, S. T., "Cast and Characterization of Light-Weight Interior & Exterior Parts for High Speed Train on Aluminum Alloy", Transaction of KSMT, vol. 20, no. 1, pp. 12-17, 2018.
  4. Kim, K. J. and Won, S. T., "Characterization of Aluminum 6xxx Series Extruded Alloys for Interior & Exterior Parts of High Speed Train", Transaction of KSMT, as submitted.
  5. Kim, K. J., "Characterization of Automotive Extruded Alloys for Interior & Exterior Parts of High Speed Train", Transaction of KSME, as submitted.
  6. Kim, K. J., "Characterization of Automotive Cast Alloys for Interior & Exterior Parts of High Speed Train", Transaction of KSME, vol. 42, no. 7, pp. 12-17, 2018.