ABSTRACT In turning, the interaction among target material tool and chip usually causes thermal damage as well as tool wear. High-pressure coolant is an emerging technology that delivers and the tool interface region. High coolant pressure allows better penetration of coolant by enhancing the lubrication effect, and decreasing thermal damage and tool wear through cooling effect at the cutting zone. The manufacturing sector wants to create a lot of goods in a short amount of time as the fourth industrial revolution approaches. Response surface design and the Taguchi L27 orthogonal array methodological paradigm are used in this work. The cutting speed (750, 1000, 1250 rpm), feed rate (0.075, 0.1, 0.125 mm/rev), depth of cut (0.25, 0.50, 0.75 mm), and fluid pressure (2.5, 5, 7.5 bar) represent as the process parameters. The objective of this paper, is to investigate how the surface finish, cutting force, and tool wear mechanism are influenced by coolants under the different coolant pressure, depth of cut, feed and speed in turning of monel using coated carbide tool. Also in this work the performance of cutting coolant (CuO and graphene) were compared with respect to tool wear, cutting force, surface roughness, cutting zone temperature chip morphology and surface modification during turning of monel. The findings showed that, under extreme wear conditions, GO-based nano fluids improved machining performance, as measured by increased cooling and lubrication regime, cutting temperature of 122 °C, and surface roughness of 0.0462 µm and flank wear of 0.2 mm. Highpressure region approaches L L2 750, 750 (750 1000 125 rpm, rpm , rpm) 0.075, 0075 0 075 (0.075 01 1 0.1 0125 0.12 mm/rev, mmrev mm/rev mm rev mm/rev) 0.25, 025 25 (0.25 050 50 0.50 75 0.7 mm, mm) 2.5, 2 5 (2.5 7 7. bar parameters paper finish force CuO graphene conditions GObased GO based regime 12 C °C 00462 0462 0.046 02 0. (75 100 0.075 007 07 (0.07 012 0.25 (0.2 05 0.5 2.5 (2. 0046 046 0.04 (7 10 0.07 00 (0.0 (0. 2. (2 004 04 0.0 ( (0

ABSTRACT The unique properties of Inconel 625 make it desirable for engineering applications. It is expensive and complex to machine Inconel 625 due to its unique properties. In light of the widespread use of turned components in crucial aircraft engines, the turning method was chosen to evaluate the impact of turning parameters on cutting forces, surface roughness, material removal rate and temperature. In this study, the Taguchi optimization approach is applied to optimize cutting parameters with laser textured tungsten carbide with HBN nano particle filled cutting tools during high-speed turning of Inconel 625. The cutting parameters include the depth of cut, feed rate, and speed at which the work piece is turned. ANOVA was used to identify the most influencing process parameters on the turning operation. The cutting speed of 14 m/min, Feed rate of 0.3 mm/rev and depth of cut of 0.33 mm gave a better cutting force of 239 N and material removal rate of 3.22 mm3/min and also a reduced surface roughness to 2.834 µm, and temperature of 61°C. From ANOVA, feed rate 77.38% was identified the most influencing process parameter on the turning operation followed by cutting speed 8.65% and depth of cut 0.41%. 62 applications engines forces study highspeed high 1 mmin m min m/min 03 0 3 0. mmrev rev 033 33 23 322 22 3.2 mm3min mmmin mm3 2834 2 834 2.83 µm 61C C 61 61°C 7738 77 38 77.38 865 8 65 8.65 041 41 0.41% 6 32 3. 283 83 2.8 773 7 77.3 86 8.6 04 4 0.41 28 2. 77. 8. 0.4