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CSME 2023/05
Volume 44 No.2
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203-209
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Parametric Optimization for Improving Hardness of Squeeze Cast LM24 Casting Through Experimental Studies
M.Arulraj a, C.M. Anand Partheeban a, M.Prakash a, T.Pugalenthi b and M.Sowrirajan b
aDepartment of Mechanical Engineering, Sri Krishna Polytechnic College, Coimbatore 641042, India.
bDepartment of Mechanical Engineering, Coimbatore Institute of Engineering and Technology, Coimbatore 641109, India.
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Abstract:
This experimental study focuses on processing of LM24 aluminium alloy for making castings through squeeze casting process. The primary objective was to analyse the influence of the process parameters namely stirring speed, melt temperature, squeeze load and die temperature on hardness of castings. Samples were cast for each experimental condition based on L9 orthogonal array. From ANOVA, it was observed that stirring speed and squeeze load were the process parameters making a noticeable improvement in hardness. A mathematical model representing the process was developed using nonlinear regression analysis with the help of MINITAB software. The optimum casting conditions were obtained through Taguchi method and MATLAB genetic algorithm and checked through the confirmation experiments. In this study, it was confirmed that the castings obtained for the optimum squeeze casting conditions exhibited nearly 25% improvement in hardness compared to the gravity die casting condition.
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Keywords: LM24 aluminium alloy, squeeze casting, hollow castings, stirring speed, genetic algorithm
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©
2023
CSME , ISSN 0257-9731
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