OPTIMIZATION IN SELECTION OF TOOL FOR TURNING OF MATRIX COMPOSITE USING COATED AND UNCOATED CUTTING TOOLS

Abstract

Industries always work aiming the 
profit, it ranges from materials, equipment’s, and in deep 
cutting tools, work material etc, and such of its kind 
satisfying the requirement is Metal matrix composite. Metal 
Matrix composite are finding increased applications in many
areas and are now gaining their usage in aerospace and 
automotive industries, because of their low cost. But 
machining of Metal matrix composite materials is difficult to 
carry out due to the anisotropic and non-homogeneous 
structure of composites and to the high abrasiveness of their 
reinforcing constituents. This typically results in damage
being introduced into the work piece and also in very rapid 
wear development in the cutting tool but even then these 
industries are forced to move with MMC. Cutting tool is 
considered to be the main factor while machining MMC, a 
proper cutting tool which does not break during MMC 
operation will definitely yield good results and also the vast 
usage in all areas. The wear rate of the cutting tool decreased 
rapidly with increasing the cutting parameters such as 
cutting speed, feed and depth of cut, however cutting speed is 
shown to be more effective. Sudden breakage of tool inserts 
occurred at high cutting speeds. Coated carbide tools have
significantly improved the tool life. Coated tools show better 
results compared to uncoated tools. Therefore this paper 
brings out an important aspect in such as optimization and 
design Break even analysis of tool during turning operation 
of Metal matrix composites by using coated and uncoated 
tools, which is analysed using a Minitab software while 
comparing the graph the material removal rate in MMC 
depends upon the depth of cut, so as the tool wear depends 
upon the depth of cut perfectly. Also coated tools show less 
tool wear than the uncoated tools also will yield in good
surface finish.