EXPERIEMENTAL STUDIES ON OPTIMIZATION OF MOLDING SAND COMPOSITION WITH TAMARIND KERNEL POWDER AS ADDITIVE

Among all the manufacturing processes, sand casting process still remains as one of the most complex process as it involves heat transfer, fluid flow and so many other things. As the properties of the green sand mix influence the casting defects, the parameters affecting these properties should be identified and controlled precisely. Since, Traditional method of trial-and-error based methods have many disadvantages such as being nonsystematic, time consuming, error-prone and requirement for long durations of experimentation [1], statistical techniques are to be employed. The process parameters that are being varied are clay, water and additive. L-9 orthogonal array is used for experimental design and S/N ratio, and ANOVA are employed to find the optimal process parameter levels and to analyze the effect of these parameters on green compression strength, green shear strength, dry compression strength, dry shear strength, and permeability. Confirmation test with the optimal levels of machining parameters was carried out.