Effect of Silica Rich CRT on Thrust Force, Temperature and Surface Finish in Drilling Magnesium Hybrid MMC

The current study focuses on developing Mg/CRT/BN hybrid composite and optimization of reinforcement and drilling parameters for better surface finish, reduced thrust force and temperature while drilling the composite. The specimens are produced through powder metallurgy method by incorporating silica rich cathode ray tube (CRT) panel glass powder having rich silica content and boron nitride. Along with CRT particle size (10, 30 and 50 μm) and proportions (5, 10, 15 wt.%), machining parameters namely cutting speed, feed rate and diameter of the tool were considered for optimization. The results reveal that the surface roughness, thrust force and temperature in drilling rose with raise in reinforcement size and weight %. Analysis of Variance (ANOVA) results indicate that every one of the input constraints have considerably affected the response variables. The regression model formed possesses enough capability to predict the output variables that too with minimal error. The optimum parameter combination for multi quality characteristics predicted by GRA gives better results.