Studies on machining characteristics of titanium alloy Ti-6Al-4V using abrasive water jet cutting

摘要

Titanium alloy Ti-6Al-4V has achieved the significance in various applications because of its high modulus to density ratio, biocompatibility, high corrosion resistance, high temperature resistance etc. Therefore machining and machinability of which in different aspects is very important. In this research Titanium alloy Ti-6Al-4V is machined using advanced machining process viz., Abrasive water jet machine (AWJM) to study the effect of process parameters on machinability of Ti-6Al-4V alloy. In the study an attempt was made to study the effect of water pressure, volume fraction of abrasives and stand-off distance on the Volume removal rate, depth of cut. In the study it is observed that the 15g/sec mass flow rate of abrasives accompanied with pressure of 240MPa and SOD of 5mm results in peak Volume Removal Rate (VRR), beyond which it leads in declination of nozzle life. The results were incorporated and validated to simulate and mathematical model is generated using the multivariate regression analysis.