Analysis of metal removal rate on nitinol alloy using electrochemical honing process

In recent years, machining of hard material is difficult and its applications are also increased due to their excellent substance properties. At the same time, better quality machined surface was not achieved through conventional machining techniques. The superior quality of machined surface was attained through Electro Chemical Honing (ECH) process. The machining rate has been increased through the combined action of electrical and chemical energy. The Cubic Boron Nitride (CBN) inserts have been used to enhance the machining rate. The chromel metal matrix composite (MMC) has chosen as a work material for ECH process. The chromel composite was machined through ECH with different control factors such as voltage, electrolyte flow rate and pressure. The optimal factors were studied through Taguchi method. The optimal MRR was attained at voltage of 30 V, electrolyte flow rate of 9 lpm, electrolyte pressure of 5 bars. From variance analysis and area plots, the voltage was made the largest causes on MRR. The voltage contribution in MRR was 75.22%.

The contribution factor which affects the responses such as Material Removal Rate (MRR) was determined through variance analysis. The optimal MRR was attained at voltage of 30 V, electrolyte flow rate of 9 lpm, electrolyte pressure of 5 bars. The largest effect on MRR was produced by voltage (75.22%).