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Dabade, Uday A.
- Investigation of High Pressure Coolant Assisted Turning of Inconel 718 Using Taguchi and RSM Based Desirability Function
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Authors
Affiliations
1 Walchand College of Engineering Sangli, Maharashtra, IN
2 Dept. of Mechanical Engineering, Walchand College of Engineering Sangli, Maharashtra, IN
1 Walchand College of Engineering Sangli, Maharashtra, IN
2 Dept. of Mechanical Engineering, Walchand College of Engineering Sangli, Maharashtra, IN
Source
Manufacturing Technology Today, Vol 15, No 9 (2016), Pagination: 22-30Abstract
Inconel 718 is one of the widely used superalloy of Nickel used in aerospace applications. It is also considered as "Difficult to Cut" metal. In present analysis a high pressure coolant (HPC) is introduced in cutting zone to check performance of HPC while turning Inconel 718. Experiments are carried out using a high pressure coolant range between 20 to 80 bar. Taguchi methodology is used for design of experiment (DoE). ANOVA and AOM plots are used for analysis of surface roughness. Response optimization is done with Response Surface Methodology based desirability function. All the cutting parameters are found to have significant effect on surface roughness at 95 % confidence level. The optimum process parameters for surface roughness are 80 bar pressure, 67.87 m/min speed, 0.1 mm/rev. feed and 0.5 mm depth of cut.Keywords
High Pressure Coolant, Inconel 718, Surface Roughness, Taguchi Methodology, ANOVA.
- Investigation and Optimization of Inconel-718 during Dry EDM
Abstract Views :220 |
PDF Views:0
Authors
Affiliations
1 Department of Mechanical Engineering, Walchand College of Engineering, Sangli, Maharashtra, IN
1 Department of Mechanical Engineering, Walchand College of Engineering, Sangli, Maharashtra, IN
Source
Manufacturing Technology Today, Vol 18, No 9 (2019), Pagination: 52-58Abstract
Dry electric discharge machining (EDM) is a new process in which the liquid dielectric is replaced by a gaseous as a medium. The flow of high velocity gas through hollow pipe tool electrode into the gap provides removal of debris and prevents excessive heating of the tool and work piece at the discharge spots. Keeping literature review into consideration and trial experiment in this paper, an attempt has been made by selecting compressed air as a dielectric medium, with Inconel – 718 as a work piece material and copper as a tool electrode. Experiments are performed using Taguchi DoE L27 orthogonal array to observe and analyze the effects of different process parameters to optimize the response variables such as material removal rate (MRR), tool wear rate (TWR) and surface roughness (Ra). In the current work, a unit has been developed to implement dry EDM process on existing oil based EDM machine.Keywords
Dry Electrical Discharge Machining (Dry EDM), Material Removal Rate (MRR), Surface Roughness (Ra), Tool Wear Rate (TWR), Taguchi Method, Analysis of Variance.References
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- Macedoa F T B; Wiessner, M; Hollenstein, C; Kuster, F; Wegener, K: Investigation of the Fundamentals of Tool Electrode Wear in Dry EDM, ‘7th CIRP Conference on High Performance Cutting (HPC VII)’, vol. 46, 2016, 55-58.
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- Experimental Investigation and Parametric Optimization of Micro Holes on Inconel 718 using Developed µ-AJM Set-up
Abstract Views :226 |
PDF Views:0
Authors
Affiliations
1 Department of Mechanical Engineering, Walchand College of Engineering, Sangli, Maharashtra, IN
1 Department of Mechanical Engineering, Walchand College of Engineering, Sangli, Maharashtra, IN
Source
Manufacturing Technology Today, Vol 18, No 12 (2019), Pagination: 35-42Abstract
Nowadays, trends in the manufacturing industry, micromachining on difficult to machine materials such as ceramics, silicon, glass, alloys of titanium and nickel, etc. is a challenging task. Difficult to machine materials are widely used for MEMS, electronic devices, medical and aerospace industries. The higher cost is associated with the machining of these materials. Mostly µEDM, µECM and µLBM process is used to create micro features. In this paper, an attempt is made to machine a micro-hole on Inconel 718 using developed in house Micro Abrasive jet machining set-up (µ-AJM). This process has several notable advantages such as minor heat-affected zones (HAZ) and cutting forces, high machining versatility and flexibility. The experiments are planned with the proper array. The experimentally measured values of different quality characteristics have been taken as hole diameter, MRR, and machining Time. It can be noticed that Standoff Distance (SOD) is an important factor and other factors Air pressure and abrasive mesh size does not show sufficient significance. The parametric effect of different most significant input process parameters on quality characteristics has been discussed. ANOVA results showed that the Stand of Distance was the most effective parameter. The optimal condition where Abrasive size (50,100) Mix standoff distance 1 mm and inlet pressure (P1) 9 bar for minimizing the hole Diameter and lesser machining time and higher MRR on Inconel 718 material.Keywords
Micro-abrasive Jet Machining (MAJM), Inconel 718, Material Removal Rate (MRR), Taguchi Method, Analysis of Variance (ANOVA).References
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- Abhishek, K; Hiremath, SS: Machining of micro-holes on sodalime glass using developed micro-abrasive jet machine (μ-AJM), 'Proc.Technol.', 25, 2016, 1234–1241.
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- Vanmore, VV and Dabade, UA: Experimental and Parametric Optimization of Micro Holes on ANSI 304 Using Micro Abrasive Jet Machining (MAJM), 'Procedia Comput Sci'., vol. 133, 2018, 620–626.
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