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ABSTRACT
Casting is one of the most important processes in manufacturing environment to develop a product for the customer needs and satisfaction. An optimization technique for green sand casting process parameters based on the Central composite design method is reported in this project. Green sand casting parameters like green size, moisture content, gating design are not controlled which results to problem that comes from fabricated products like casting defects so there is need for optimization.
In carrying out the experiment, materials for the casting process like sand, aluminum scraps were made available, the mould was prepared and the aluminum scraps were heated. At the end of the experiment, hardness test was carried out and recorded for analysis.
The response surface quadratic modeling was employed to develop a mathematical model for the hardness of the aluminum alloy. Analysis of variance(ANOVA) test was conducted to identify significant parameters. The test showed that the developed model has a p-value of 0.1947. The optimal values obtained for pouring temperature, runner size are 704.1610C and 202.608mm2 respectively. It was discovered the material has high coefficient of determination, good thickness, goodness of fit. The optimal solution also helped in attaining maximization.