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Extrusion of AA 3003 micro condenser tube with multi-hole and thin wall section using porthole die

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Abstract

Recent interest in condenser tubes for an automotive heat exchanger is linked to developing a tube with high strength to allow the minimization of the wall thickness and the multi-hole of the cross section. These goals can be achieved by using alternative materials and strengthening the design of the tube’s cross-section. However, the design of the tube’s cross-section indicates that the gains from it are limited due to the mechanical properties of the materials such as yield and tensile strength. To overcome this problem, AA 3003 has recently been used for the condenser tubes. However, it has the disadvantage of low extruability compared with AA 1100. This study was designed to develop AA 3003 condenser tube using a porthole extrusion die and was specially focused on comparing material flows of the AA 3000 and AA 1000 during extrusion. Estimations were carried out using FE simulations of the hot extrusion process. After the FE simulations, the validity of the results was verified by the extrusion experiments of AA 3003 condenser tube. Also, the welding strength of the extruded tube was estimated by surface nano-hardness of the welding line using nano-indentation test.

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Authors and Affiliations

  1. Dongnam Regional Division, Korea Institute of Industrial Technology, 25, Yeonkkot-ro, 165beon-gil, Jeongchon-myeon, Jinju-si, Gyeongsangnam-do, 52845, South Korea

    Jung-Min Lee, Seong-Won Lee, Won-Hoo Jo & Chan-Joo Lee

  2. Department of Electronic Engineering, Dong-A University, 37, Nakdong-daero, 550beon-gil, Saha-gu, Busan, 49315, South Korea

    Yun-Kyung Kim

  3. School of Mechanical Engineering, Pusan National University, 2, Busandaehak-ro, 63beon-gil, Geumjeong-gu, Busan, 46241, South Korea

    Byung-Min Kim

Authors
  1. Jung-Min Lee
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  2. Seong-Won Lee
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  3. Yun-Kyung Kim
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  4. Won-Hoo Jo
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  5. Chan-Joo Lee
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Correspondence to Byung-Min Kim.

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Lee, JM., Lee, SW., Kim, YK. et al. Extrusion of AA 3003 micro condenser tube with multi-hole and thin wall section using porthole die. Int. J. of Precis. Eng. and Manuf.-Green Tech. 3, 239–245 (2016). https://doi.org/10.1007/s40684-016-0031-5

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  • DOI: https://doi.org/10.1007/s40684-016-0031-5

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