| Popis: |
Many present day applications require machining and finishing of complex shaped and tough to machine materials with precision and accuracy by conventional or non-conventional machining and polishing processes. Ultrasonically aided electrochemical magnetic abrasive machining (UAEMAM) process is a novel non-conventional machining technique which can machine and finish the product for better surface quality. In present research work, the development and performance evaluation of UAEMAM process for machining of SS 316L is reported. The UAEMAM process is optimised using response surface methodology (RSM) based on central composite design (CCD) and grey relational analysis. The main machining variables such as work piece rotational speed, working gap, concentration of NaNO 3 , percentage of abrasives by weight and pulse on time were chosen to determine percentage improvement in surface finish improvement (PISF) and material removal rate (MRR) in the UAEMAM process. The significant machining factors and the best combination levels of machining parameters associated with PISF and MRR were determined. The benefits of ultrasonic aided electrochemical magnetic abrasive machining were also confirmed from the micrograph observations of the surface. Experimental results show that UAEMAM process is effective for machining and polishing components for better surface finish. |
