Electrical Discharge Machining Characteristics of Hybrid Mg/Sicp/Flyash Composites
Journal Title: International journal of Emerging Trends in Science and Technology - Year 2016, Vol 3, Issue 9
Abstract
The objectives of this research is to prepare the hybrid Mg/SiCp/Flyash metal matrix composite through powder metallurgy technique and investigate the effects of process parameters like current, pulse on time and pulse off time in Electro Discharge Machining characteristics on material removal rate and tool wear rate. The composition is selected on weight percentage basis SiC with 6 % and 6% fly ash with constant 88% Mg as matrix material. With proper uniform distribution particulate dispenses wisely which is evident from SEM analysis. The electrical discharge machining was done though the ELEKTRA PLUS spark erosion machine. Brass tool with 10 mm diameter is used to machine the specimens. Current (I), pulse on time (Ton) and pulse off time (Toff) parameters were varied in this electrical discharge machining process. Experiments were conducted under different conditions of pulse on time (Ton), pulse off time (Toff), current (I). The output responses measured were material removal rate (MRR) and Tool wear rate (TWR). Mathematical models are proposed for the above responses using response surface methodology (RSM). The analysis of variance (ANOVA) was carried out to study the effect of process parameters on process performance
Authors and Affiliations
L. Arun kumar
Keywords
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