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Inference of optimal speed for sound centrifugal casting of Al-12Si alloys

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Abstract

True centrifugal casting is a standard casting technique for the manufacture of hollow, intricate and sound castings without the use of cores. The molten metal or alloy poured into the rotating mold forms a hollow casting as the centrifugal forces lift the liquid along the mold inner surface. When a mold is rotated at low and very high speeds defects are found in the final castings. Obtaining the critical speed for sound castings should not be a matter of guess or based on experience. The defects in the casting are mainly due to the behavior of the molten metal during the teeming and solidification process. Motion of molten metal at various speeds and its effect during casting are addressed in this paper. Eutectic Al-12Si alloy is taken as an experiment fluid and its performance during various rotational speeds is discussed.

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Authors and Affiliations

  1. Department of Mechanical Engineering, K S Group of Institutions, Bangalore, India

    Shailesh Rao Agari

  2. Department of Mechanical Engineering, Nitte Meenakshi Institute of Technology, Bangalore, Karnataka, India

    P. G. Mukunda

  3. Department of Mechanical Engineering, National Institute of Technology Karnataka, Surathkal, Karnataka, India

    Shrikantha S. Rao

  4. Department of Mechanical Engineering, Dayanand Sagar College of Engineering, Bangalore, Karnataka, India

    K. G. Sudhakar

Authors
  1. Shailesh Rao Agari
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  2. P. G. Mukunda
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  3. Shrikantha S. Rao
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  4. K. G. Sudhakar
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Correspondence to Shailesh Rao Agari.

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Agari, S.R., Mukunda, P.G., Rao, S.S. et al. Inference of optimal speed for sound centrifugal casting of Al-12Si alloys. JOM 63, 25–29 (2011). https://doi.org/10.1007/s11837-011-0071-9

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  • DOI: https://doi.org/10.1007/s11837-011-0071-9

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