In the current scenario, manufacturing industries faces difficulties during machining of engineering materials-metal based, having higher mechanical properties viz. higher strength, toughness and hardness through conventional machining methods. These problems include rapid tool wear, poor surface quality of work piece material and lower stock removal rate. EDM is a single prominent what more lucrative unconventional machining procedure is, finding its prevalent functions in motorized and aerospace industries for machining of harder materials that is super alloys. Super alloys are the heat-resistant category of metals maintaining their elevated potency at superior temperature. The present paper focuses on the past work done by the researchers on machining of super alloys viz. titanium, nickel and cobalt using EDM and Wire EDM process.
Micro-drilling of AISI316L is very challenging task. Unconventional machining process may be used for such type of operation. Laser beam drilling is a best for micro drilling. High thermal energy and converging-diverging property of laser beam affects the quality of laser drilled holes. In present work Nd:YAG laser beam has been used and investigate effects of laser input parameters on responses. To minimize number of experiments, get extreme information for experimental trials. Central composite rotatable design approach has been adopted. Analysis of variance is used to find reliable input parameters, are affecting responses. From this paper, it is found that current and gas pressure are significant for hole circularity at top. Current and pulse frequency are significant for bottom side circularity. Current and cutting speed are significant parameter for hole taper.
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