International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395 -0056 Volume: 02 Issue: 04 | July-2015 www.irjet.net p-ISSN: 2395-0072 © 2015, IRJET.NET- All Rights Reserved Page 297 INVESTIGATION OF SURFACE FINISH AND MRR DURING ABRASIVE ASSISTED DRILLING ON POLYMER MATRIX COMPOSITE MATERIAL. Dilpreet Singh 1 , Gurmeet Singh Chhatwal 2 , Mandeep Kumar 3 1 Dept. of Mechanical Engineering, Punjab College of Engineering & Technology, Lalru Mandi, Punjab, India 2 Assistant Professor, Dept. of Mechanical Engineering, Punjab College of Engineering & Technology, Lalru Mandi, Punjab, India 3 Assistant Professor, Dept. of Mechanical Engineering, Chandigarh University, Gharuan, Punjab, India ---------------------------------------------------------------------***--------------------------------------------------------------------- Abstract - This report is concerned with investigating the Surface finish when drilling POLYMER MATRIX COMPOSITE (E-Glass) with HSS drill. This study included drilling of PMC with supply of Sic abrasive, Alumina Oxide Abrasive having grain size 800, 1000, 1200 mesh size through abrasive slurry system & with Coolant. Abrasives not only used for cooling purpose but also increases the surface finish, MRR and reduce tool wear. Experiments were conducted on a CNC Drilling machine. Taguchi is applied for executing the planning of experiments. The drilling parameters namely Feed rate (mm/min) ,Spindle speed (rpm) ,Type of abrasive grain size ,Slurry Concentration ,Type of Abrasive (Silicon Carbide, Alumina oxide), were optimized using multiple performance characteristics for Surface Finish. The result shows that the feed rate, Type of Abrasive & slurry concentration are the most significant factors which affect the Surface finish in the drilling can be effectively improved by using this approach Key Words: Abrasives, ANOVA, Drilling, Taguchi Technique, Polymer Matrix Composite material E- Glass , Surface roughness, MRR. 1. INTRODUCTION Drilling is one of the most fundamental machining processes. It is most frequently performed in material removal and is used as a preliminary step for many operations such as reaming, tapping and boring. It is moving toward high speed applications for productivity enhancement. Drilling is a process of producing round hole in solid material or enlarging existing hole with the use of multi-point cutting tools called drill or drill bits. Various cutting tools are 297blind hole in a solid material. It has found that high production machining and drilling with high cutting velocity, feed and depth of cut is inherently associated with generation of large amount of heat and high cutting temperature which reduces accuracy and tool life. Drilling is an essential operation in the assembly of the structural frames of automobiles and aircrafts. The life of a joint can be critically affected by the quality of the drilled holes. The growing demand for higher productivity, product quality and overall economy in manufacturing by machining, grinding and drilling, particularly to meet the challenges thrown by liberalization and global cost competitiveness, insists high material removal rate and high stability and long life of the cutting tools. However, high production machining and grinding with high cutting velocity, feed and depth of cut is inherently associated with generation of large amount of heat and high cutting temperature. Such high cutting temperature not only reduces dimensional accuracy and tool life but also impairs the surface finish of the product. One estimate is that 75% of all metal-cutting material removed comes from drilling operations. Drilled holes are characterized by their sharp edge on the entrance side and the presence of burrs on the exit side (unless they have been removed). We all know that the 20th century has witnessed revolutions in a number of fields like computer, Radar, space, missiles, etc. but the most interesting changes have taken place in the area of polymer matrix composites. In the literature review we will review the surface roughness and material removal rate, Taguchi technique. 2. LITERATURE REVIEW J.Pradeep Kumar analyzed that to utilize Taguchi method to investigate the effects of drilling parameters on surface roughness, tool wear by weight, material removal rate and hole diameter error in drilling of OHNS material using HSS spiral drill. Orthogonal arrays of Taguchi, the Signal–to- Noise (S/N) ratio, the analysis of variance (ANOVA), and regression analysis are employed to analyze the effect of drilling parameters on the quality of drilled holes. A series of experiments based on L18 orthogonal array are conducted. The experimental results are collected and analyzed using commercial software package MINITAB 13. Linear regression equations are developed with an objective to establish a correlation between the selected drilling parameters with the quality characteristics of the