Micro features like micro-holes, micro-channels and micro-textures plays an important role in Micro Electro Mechanical System (MEMS) Components. Conventional tool based micro-machining technologies leads to poor surface finish, heat generation, premature failure of the tools and surface defects. On the other hand, some non-conventional methods like electric discharge machining and laser machining results in the formation of heat affected zones, residual thermal stresses, and surface defects like recast layer, wavy pattern, cracks and deteriorated edges.
Todays seminar is focused on the machining and characterization of channels on Quartz and Bio-material- titanium alloy Ti -6Al-4V using the tailor-made abrasive jet machining setup. Abrasive jet machining (AJM), is one of non-conventional mechanical machining techniques used to machine both ductile and brittle engineering materials. In the present investigation focus has been made to study the various output responses like MRR, width of the channel, depth of the channel, surface roughness and aspect ratio etc., by varying the input process parameters like air pressure, abrasive grit size , feed rate and stand-off distance. The study proves the application suitability of AJM for machining the channels on quartz and Ti-6Al-4V alloy successfully, and the proper selection of the process parameters can improve the channel performance.