Abstract:
In this present work, fabrication of abrasive jet machining (AJM) setup and parametric
study of various process parameters in AJM setup have been carried out.Main important output
response ismaterial removal rate (MRR) during the AJM. The main input variables that affect the
output responses are nozzle diameter (ND), gas pressure and stand-off distance (SOD). Silicon
carbide abrasive with grit size of 100 μm has been chosen to find out the effect of process parameters
during making holes on ceramic plate. Experiments have been done by selecting L9 orthogonal array,
and results have been optimized with response surface methodology. ANOVAis used to identify the
significant process parameters. Statistical results (at a 95% confidence level) showthat the percentage
contribution of nozzle diameter, stand-off distance and gas pressure on metal removal rate is 42%,
46.9% and 9.7%, respectively. The result shows that the maximum MRR value of 0.018 g/s has been
obtained by Taguchi’s optimization method. From the results obtained byANOVA, it has been found
out that the stand-off distance is the most significant parameter. Contour plot has been used to
determine desirable material removal rate and corresponding operating conditions during abrasive
jet machining of ceramic.
