Abstract
The purpose of the present investigation is to study the effect of molding sand properties on investment casting (IC) for process capability analysis. Starting from the identification of component/benchmark, ICs were produced with different grades of silica slurry layers (coarse, medium and fine) over the patterns (in the form of a tree). Measurements on a coordinate measuring machine (CMM) helped in calculating the dimensional tolerances of the castings produced. Some important mechanical properties were also compared to verify the suitability of the castings. The study suggested the long-term performance level of the IC process after it has been brought under statistical control as casting solution for plain carbon steel. The provided data from the experimentation highlights the ability of the IC process to produce a product that will consistently meet the design requirements and the customer expectation.
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