Micro-Electrical Discharge Machining of Titanium Alloy (Ti-6Al-4V) Using Triangle Electrical Current Pulse Principle

Abstract

Titanium alloys are extensively used in the aviation, nano technology, solenoid valve, pharmaceutical industries and can be used in a variety of design-related sectors due to its unique material properties. Due to titanium alloy's poor heat flux, strong corrosiveness, and lower tensile flexibility in traditional machining, producing micro holes is a difficult process. To overcome these difficulties and produce micro holes with the highest level of dimensional precision and surface texture grade, Electric Discharge Machining (EDM) is a good option. Determining how various input variables, such as current, pulse on time with triangle wave, and pulse off time (TOFF), affect the machining capabilities of MRR and OC during the micro-EDM process is the aim of this work. For experimentation response surface methodology with face centered composite rotatable design were utilized and the output were recorded. Statistical analysis was used to establish the relationship between various technique factors and the micro-EDM efficiency process. ANOVA is used to ascertain the most significant variable. The various surface defects produced by the micro-EDM surface holes were examined using micrograph.