Machinability investigation with Wiper Ceramic Insert and Optimization during the Hard Turning of AISI 4340 Steel

Production cost is the highest motivating factor to initiate the introduction of new manufacturing technologies and application of optimization techniques in the production industries. In this paper an attempt is made to establish the influence of workpiece hardness on Surface roughness (Ra), cutting force (Fy) and tool wear (Vb) during the performance evaluation of wiper ceramic cutting insert. Experiments are planned according to Box-Behnken Design approach during the hard turning of Hardened AISI 4340 steel on a CNC lathe. RSM based Desirability approach used for multi-objective optimization of the machining parameter and optimum cutting conditions are proposed based on this approach. Experimental result confirms that the workpiece hardness have significant statistical influences on the surface roughness, cutting force and tool wear. (C) 2019 Elsevier Ltd. All rights reserved.