The present research work is aimed at the development of spherical
disc of ball valve as a cast study for investment casting
applications. Three controllable factors of the investment casting
process (namely: volume/surface-area (V/A) ratio of components,
slurry layer's combination and type of metal) were studied at three
levels each by Taguchi's parametric approach and single-response
optimization was conducted to identify the main factors controlling
surface hardness, dimensional accuracy and surface finish. Castings
were produced using Aluminium, Mild steel and Stainless steel at
recommended parameters through ceramic shell investment casting
process. The micro structure analysis has been used to study the
surface morphology. Cooling curve analysis was done to analyse the
surface hardness data.
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