This article investigated the effect of wire electrical discharge machining process parameters such as pulse on time, pulse off time, pulse current and the wire drum speed on the surface roughness of machined hybrid metal matrix composite. The hybrid composite was prepared by inert gas–assisted electromagnetic stir casting process using 15 wt% Al2O3/SiC particulates (7.5% each) in metal matrix Al-7075 alloy. Taguchi method was used for parameter optimization, and the level of importance was determined using analysis of variance. The MINITAB15 software was used in the analysis. The results show that pulse on time, pulse current and pulse off time were significant parameters, whereas the wire drum speed had insignificant effect. In confirmation test, the average experimental value of surface roughness was within an error of 3.46% of the predicted value at the optimum level of process parameters.
This article investigated the effect of wire electrical discharge machining process parameters such as pulse on time, pulse off time, pulse current and the wire drum speed on the material removal rate, while machining newly developed hybrid metal matrix composite (Al7075/7.5%SiC/7.5%Al 2 O 3 ). The hybrid composite was prepared by inert gas-assisted electromagnetic stir casting process. Taguchi method was used for parameter optimization and the level of importance was determined using analysis of variance. The results showed that pulse on time, pulse off time and pulse current were significant parameters. The pulse on time was the most significant parameter that contributed maximum (46.04%) to the material removal rate followed by pulse current (34.72%), pulse off time (10.23%) and interaction, pulse on time 3 pulse off time (5.46%). The wire drum speed had insignificant effect on the material removal rate. In confirmation test, the average experimental value of material removal rate was within the predicted optimum class interval.
Usage of advanced machining method in the formation of composites made of aluminum metal matrix (Al-MMC) has produced substantial ability because the manufacture of intricate die shapes in these tough material is of elevated precision and surface finish Impossible. EDM has proven to be one of the many unorthodox processing techniques that are successful in shaping These materials which are difficult to process. The main aim of this investigation work is to find the outcome of Pulse ON-time (Pon), Current (Cu)and flushing pressure (Fp) on tool wear rate (TWR), metal removal rate (MRR) taper (T), radial overcut (ROC), and surface roughness (SR) on machining Al6061 with 5% SiC reinforcement.[1,2] On this Investigation we are deputed Electronica PSR 35 and dielectric fluid was used as kerosene with the help of flushing machine to pump out the dielectric fluid. Copper is used as the electrode and it also used as a tool of diameter 3mm to pierce the work piece for the required length. Three machining parameter at each having three stages was used to perform the experiment on the orthogonal array of L27 taken into account. The experiments are conducted for three following trails in random order. The maximizing taken into account for optimization and ANOVA statistical tool is used and to find out the surface morphology SEM is taken on different parts of the work piece.[3]
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