Thursday, August 17, 2017

New M.Tech. Thesis Submitted from production

PERFORMANCE OF NYLON-6 ROD WITH RESPECT TO EXTRUSION PROCESS by Saurabh Malpotra

Abstract
Single screw extrusion is one of the key operations in polymer handling and is likewise a key segment in numerous other preparing operations. There are many process parameters for single screw extruder namely, dies temperature, barrel temperature, screw speed, die angle, mixing ratio and material composition. These parameters and their interaction have been investigated by different researcher for better quality outcomes. The present work studies the influence of three main process parameter namely, die temperature, barrel temperature and screw speed on the mechanical properties of Nylon6 (M-28RC grade) rods (as per ASTM standard). The critical process parameters were optimized using Taguchi L9 OA and ANOVA variance for achieving high tensile strength and %elongation. Further, the optimized results have been investigated using ANSYS FLUENT 15.0 (CFD). The results of the study reveal that screw speed is the most contributing factor to control tensile strength and %elongation for extruding the rod. The effect of process parameters on the fluid flowing inside the die of single screw extruder were investigated and compared using CFD analysis