Browsing by Author "Aithal, S.K."

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Influence of teeming temperature of molten tin in centrifugal casting
(2010) Mukunda, P.G.; Shrikantha, S.R.; Shailesh, A.R.; Aithal, S.K.
During centrifugal casting, when a mould is rotated at very 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 behaviour of the molten metal during teeming and solidification process. The studies of melt flow in partially filled rotating cylinders have indicated many features, which were not mentioned in the literatures of centrifugal casting. Motion of molten metal at various speeds and its effect during casting are addressed in this paper. Molten tin has been taken for the experiments, and its behaviour during various rotational speeds is explained. 2010 W. S. Maney & Son Ltd.
Study of tribological characteristics of Al-Si based directional solidified FGM with graphite end chill
(American Institute of Physics Inc. claims@aip.org, 2020) Ramesh Babu, N.R.; Ramesh, M.R.; Murthy, R.N.; Sudheer Reddy, J.S.; Aithal, S.K.; Manjunath, H.N.
The present work is to study the wear characteristics of graphite reinforced Al-Si based functionally Graded materials (FGMs). FGM were fabricated through directional solidification (DS) technique. To achieve this graphite chill were incorporated at the end of the mold. The accomplished FGM are explored for microstructure and tribological properties to study the significance of end chill. The microstructure is analysed using optical microscope, showed that the number of silicon particles present at the top portion is more when compared to the bottom portion. The tribological studies showed that top portion of FGM exhibited highest wear resistance in compared to the bottom portion. Â© 2020 Author(s).