H. Hocheng and K.R. Chang have carried out work on the kerf formation of a ceramic plate cut by an abrasive water jet. There is a critical combination of hydraulic pressure, abrasive flow rate and traverse speed for throughout cut below which it cannot be achieved for certain thickness. A sufficient supply of hydraulic energy, fine mesh abrasives at moderate speed gives smooth kerf surface. By experiment, they find kerf width increases with pressure increase, traverse speed increase, abrasive flow rate increase and abrasive size increase. Taper ratio increases with traverse speed increases and decreases with pressure increases and abrasive size increases. Taper ratio has no effect on an increase in abrasive flow rate3.
M. Sreenivasa Rao, S.Ravinder and A. Seshu Kumar investigated to study the effect of parameters, viz water pressure, Traverse speed, and Standoff distance, of Abrasive Water-jet Machine (AWJM) for mild steel (MS) on surface roughness (SR).Further Taguchi?s method, analysis of variance and signal to noise ratio (SN Ratio) are used to optimize the considered parameters of Abrasive Water Jet Machining. In Taguchi?s design of experimentation, the L9 orthogonal array is formulated and it can be concluded that water pressure and transverse speed are the most significant parameters and standoff distance is sub significant parameter4


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