An experimental investigations on ss 316l with electrochemical micromachining of weak electrolytes bydissimilar techniques

Abstract

In recent years, stainless steel 316L (SS 316L) has been used in newlinevarious industries, including food processing, aerospace, medical, newlinebiomedical, and automotive, owing to its excellent corrosive resistance. SS newline316L can be machined through traditional methods, but it seems to be newlinedifficult because of its chemical and mechanical properties. Hence, newlineelectrochemical micro-machining (ECMM) is the most suitable method for newlinemachining SS 316L due to its burr-free machining surface, no residual stress, newlineand high precision. However, the selection of the right electrolyte and newlinesuitable techniques with apt parameters enlightens the researchers for the newlineECMM of SS 316L in commercial form. Oxalic acid is initially considered as an electrolyte to carry out the preliminary electrochemical studies on machining SS 316L. The effect of newlinevoltage in machining, duty cycle, and concentration of electrolyte on material newlineremoval rate (MRR) and overcut are considered for the study. Furthermore, a newlineScanning Electron Microscope (SEM) analysis technique has also been newlinecarried out to study the parametric effect on the machined surface. As a newlineresult, the use of oxalic acid as an electrolyte contributes to low MRR and newlinesmaller over-cut. The surface of the machined surface was found to be newlineuniform in the SEM image.The experiments conducted on SS 316L using oxalic acid newlineelectrolyte take a longer duration of time to produce a micro-hole. Hence, newlinefurther experiments are planned using different organic electrolytes such as newlinetartaric acid (C4H6O6), citric acid (C6H8O7), and a combination of tartaric and newlinecitric acid electrolyte (mixed electrolyte) are considered to select the better newlineelectrolyte. Process parameters like machining voltage, duty cycle, and newlineelectrolyte concentration are included in determining the performance of newlinemachining. newline newline newline