The purpose of the present study is to experimentally investigate
and optimize the mould fabrication process, based on vacuum casting
for plastic component. Starting from the identification of
component, prototype with three different types of material were
prepared under three different conditions of temperature, time and
mixing ratio. Measurements on the coordinate measuring machine
helped in calculating the dimensional tolerances of the plastic
components produced. Further relation between hardness, dimensional
accuracy and surface roughness in vacuum casting and other
controllable parameter has been deduced by Taguchi technique L9
orthogonal array (OA). The study highlighted the optimized input
parameter settings in-terms of dimensional accuracy, surface
roughness, micro-hardness for plastic components. Final component
produced are acceptable as per IS standard UNI EN 20286-I (1995)
and DIN 16901 standards for plastics.
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