Influence of Aspect Ratio on the Mechanical and Tribological Properties of Vertical Centrifugal Cast Aluminium Silicon Alloy

Open Access

Year : 2024 | Volume :11 | Special Issue : 13 | Page : 104-111
By

    Smrutirekha Sen

  1. J. Sudheer Reddy

  2. B.K. Muralidhara

  1. Professor, Department of Mechanical Engineering, Odisha University of Technology & Research, Bhubaneswar, Odissa, India
  2. Professor, Department of Mechanical Engineering,Nitte Meenakshi Institute of Technology, Karnataka, India
  3. Professor, Department of Mechanical Engineering,Nitte Meenakshi Institute of Technology, Karnataka, India

Abstract

To get a sound cast of precise shape and size in the vertical centrifugal casting process, the flow behavior of the melt and process parameters such as aspect ratio of the mould, rotating speed, volume fraction, etc. must be optimized. The optimal parameters of the vertical centrifugal casting process derived from past cold modelling studies in casting of Al-12%Si alloy are investigated in this paper. Casts were obtained using 7 mm thick mould having l/d ratio of 0.5,1 and 1.5 at 400,500 and 600 rotational speed of mould. Specific Wear Rate (SWR) and Hardness of Vertical Centrifugal Cast Al- 12%Si alloy specimens were studied and also microstructure of those specimens was examined. The casts made at 400 and 600 rpm appeared with coarse and fine microstructures respectively. The hardness of the alloy rises with increasing rotational speed for both 0.5 and 1.0 aspect ratio of mould. However, hardness value of casts at 1.5 aspect ratio of mould was found decreased because of insufficient driving force and larger time taken to reach the end of the cylinder. The hardness of the cast specimens was found to be higher for higher l/d ratio. Similarly the hardness at the pouring end is more compared to the mould end of the specimen. It was observed that Specific Wear Rate of cast specimens prepared at 400 rotational speed of mould was higher than those prepared at 600 rpm.

Keywords: Aluminium silicon alloy, vertical centrifugal cast, wear.

[This article belongs to Special Issue under section in Journal of Polymer and Composites(jopc)]

How to cite this article: Smrutirekha Sen, J. Sudheer Reddy, B.K. Muralidhara Influence of Aspect Ratio on the Mechanical and Tribological Properties of Vertical Centrifugal Cast Aluminium Silicon Alloy jopc 2024; 11:104-111
How to cite this URL: Smrutirekha Sen, J. Sudheer Reddy, B.K. Muralidhara Influence of Aspect Ratio on the Mechanical and Tribological Properties of Vertical Centrifugal Cast Aluminium Silicon Alloy jopc 2024 {cited 2024 Mar 02};11:104-111. Available from: https://journals.stmjournals.com/jopc/article=2024/view=134038

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Special Issue Open Access Original Research
Volume 11
Special Issue 13
Received October 30, 2023
Accepted December 26, 2023
Published March 2, 2024