Optimization of Cutting Parameters Affecting Surface Roughness in Turning of Inconel 625 Superalloy by Cryogenically Treated Tungsten Carbide Inserts

Abstract

This work focuses on developing the mathematical model of surface roughness (Ra) in the turning of Inconel 625 superalloy with cryogenically treated tungsten carbide inserts. The influence of cryogenic treated on the microstructure and hardness of tungsten carbide tools was also investigated for the as-received inserts and deep cryogenic treatment at − 196 °C for 12, 24, and 36 h conditions. Turning experiments have been performed according to an orthogonal array L16 with three parameters (cutting tool, feed rate, cutting speed) at different levels with a 1 mm depth of cut. The ideal cutting tool and cutting parameters were evaluated in terms of the surface roughness (Ra). Analysis of Variance has been applied to determine the percentage of each cutting factor. It has been observed that the cutting speed has a maximum with 66.28% contribution on Ra. The best optimal turning parameters are obtained as A3B3C1 according to S/N ration. The mathematical model of Ra has been developed by regression analysis. The developed model is tested with verification experiments and found to be in good agreement with the experimental results.

Effect of Mo addition on microstructure, mechanical and machinability properties of Cr-PM steels

“…This situation in many studies has been associated with reducing friction owing to the reduction of the material yield strength by the temperature rise depending on increasing cutting speed. [43][44][45] The Ra approximately decreases 35-45% with an increase in cutting speed from 150 to 210 m/min while decreases 30-40% by cutting speed from 210 to 270 m/min in the milling experiments. However, considering all samples, it was observed that the Ra values increased depending on the increase in feed rate at all levels of cutting speed.…”

Analysis and Optimization of Cutting Tool Coating Effects on Surface Roughness and Cutting Forces on Turning of AA 6061 Alloy

“…Especially with the optimization of the input parameters in machining, the costs can be reduced by saving time, energy consumption, and scrap. ere are many studies in the literature on the Taguchi method, which is an optimization technique [8][9][10]. is method reduces production and testing costs by reducing the number of trials [11].…”

Effect of cryogenic treatment on properties of materials: A review

“…Researchers had developed various setups for deep and shallow cryogenic setup for various heat treatment sequences. [29][30][31][32][33][34][35][36][37][38][39][40][41][42][43][44][45][46] A typical cryogenic setup is shown in Figure 3(b).…”