Transactions of Materials Processing (소성∙가공)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
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Warm Hydroforming Characteristics of High Strength Aluminum Tubes

고강도 알루미늄 튜브의 온간 하이드로포밍 특성

  • 이문용 ((주)성우하이텍 기술연구소) ;
  • 강창룡 (부경대학교 재료공학) ;
  • 이상용 (한국기계연구원 소성응용그룹)
  • Published : 2004.08.01
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Abstract

Hydroformability of 6061 and 7075 aluminum tube materials was studied by warm hydroforming experiments. A special tooling and heating system was designed and manufactured in order to perform warm hydroforming between room temperature and $300^{\circ}C$. The control of tube temperature for warm hydroforming was made by the control of temperature of oil medium. Warm hydroformability was analyzed by tube appearances, tube elongation and hardness values. Hydroforming characteristics of 6061 and 7075 tubes showed different temperature dependence between room temperature and $300^{\circ}C$. The difference in hydroformabilities of 6061 and 7075 at elevated temperatures was interpreted by the different sensitivity to dynamic strain aging of both aluminum materials.

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References

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