Experimental studies on machining of steel using coated and uncoated tools

Abstract

Turning is a process using a single point tool that removes newlineunwanted material to produce a surface of revolution. Turning newlineoperations are evaluated based on the performance characteristics newlinesuch as cutting forces, feed forces, surface roughness, tool wear newlineand tool life. These performance characteristics are correlated with newlinecutting parameters such as cutting speed, feed rate and depth of newlinecut. To operate machines efficiently and to obtain the required newlinepayback, there is a need to select suitable cutting parameters. newlineIt has been found that wide verities of both uncoated and coated newlineceramic cutting tool inserts are used in the machining of steels in newlinethe manufacturing industries. newlineFrom the literature survey it appears that lesser systematic newlineresearch work has been carried out on various aspects of turning newlineprocess such as force analysis, wear studies, tool tip temperature newlineanalysis etc., especially with the combination of medium carbon newlinesteel confirming to EN-24 and EN-353 specification as work newlinematerials using both uncoated and coated ceramic cutting tool. newlineTherefore, in the present investigation it has been proposed to carry newlineout systematically experiments with an objective of understanding newlinethe hard machining process on medium carbon steel confirming to newlineEN-24 and EN-353 specification as work materials using both newlineuncoated and coated ceramic cutting tool inserts. newlinevii newlineMore specifically for every combination of cutting tool insert and newlinework piece materials selected, it has been proposed - (i) Analyze newlineforces acting on tool inserts during turning operation. (ii) study newlinesurface roughness of work material after turning operation. newline(iii) Optimize cutting conditions during turning operation by design newlineof experiment approach.