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DEVLOPMENT OF A TECHNIQUE TO ANALYSE conventional grinding of inconel 718:

DEVLOPMENT OF A TECHNIQUE TO ANALYSE conventional grinding of inconel 718 Submitted by A.Babu 1

Objective:

Objective Main objective of this project is to optimize the response parameters in the machining of by a suitable combination of input parameters. The response parameters chosen are material removal rate (MRR),surface roughness (R a ) surface damage, and tool wear and the input or independent machining parameters chosen are Work speed, Depth of cut, and Feed rate. To find the suitable combination of input parameters, optimization techniques are used in this research work. 2

Scope of the project :

Scope of the project In any machining process material removal rate and surface finish are two important parameters to be considered to optimize the productivity. Many authors discussed the production rate, and micro structure analysis, with respect to input parameters as single objective problem. But material removal rate, surface damage, and tool wear , and surface roughness (Ra) criteria not yet analyzed as a multi-objective problem for inconel 718. Hence these four criteria are selected. 3

Need for the Current study :

Need for the Current study Inconel material is widely used in aircraft parts, Space shuttle, Bio engineering applications, solar actuators, etc. Cost effective machining with generation of good surface finish on the Inconel components by conventional machining operation is a challenge to the manufacturing industry contd 4

PowerPoint Presentation:

Major advantages of high-speed machining are high material removal rates, the reduction in lead times, low cutting forces, dissipation of heat with chip removal resulting in decrease in work piece distortion and better surface finish. Therefore, the right value of input parameters such as Work speed, Depth of cut, and Feed rate will lead to good surface finish and maximize the metal removal rate. Hence this research work is aimed at finding a better combination of the input parameters to obtain maximum material removal rate (MRR) and minimum surface roughness (Ra) and surface damage, and tool wear . 5

Methodology :

Methodology EXPERIMENTAL WORK The material and Abrasive wheel were selected based on the problem identification study. Identifying different ranges of input parameters and their levels Testing of hardness, Chemical composition and Micro structures. Measuring surface roughness (R a ) using surface roughness tester. contd 6

PowerPoint Presentation:

COMPUTATIONAL WORK Calculation of Surface roughness Calculation of Material removal rat ANALYSIS Analyzing the experimental results using optimization techniques in order to find suitable Combination of input parameters to get maximum material removal rate and minimum Surface roughness (R a ) value and surface damage, and tool wear . 7

Inconel :

Inconel Introduction Super alloy, Inconel 718 is one of the important alloys among the Nickel and Nickel-based alloy. Inconel 718 has found its importance in many industries, owing to its unique properties such as high oxidation resistance, corrosion resistance even at very high temperatures and retains a high mechanical strength under these conditions as well. 8

PowerPoint Presentation:

Inconel 718 is still considered as the material of choice for the majority of aircraft engine components with service temperatures below 1200°F (650°C). Inconel 718 is a Precipitation-Hardenable Nickel-Chromium alloy containing significant amounts of Iron, Niobium, and Molybdenum along with lesser amounts of Aluminum and Titanium. It combines corrosion resistance and high strength with outstanding weldability including resistance to post weld cracking. The alloy has excellent creep-rupture strength at temperatures to 1300°F (700°C). 9

Applications:

Applications Aircraft engine parts, Chemical processing and pressure vessels Steam turbine power plants and space vehicles Medical applications, marine applications Automotive sector, pumps and tooling etc 10

References:

References CHEN.S.L,HSIEH.S,LIN.H.C.2007, “ EDM machining of NiAlFe ternary shape memory alloy” Journal of alloys and compounds Andrew J. Birnbaum and Y. Lawrence Yao “The Effects of Laser Forming on Superelastic NiTi Shape Memory Alloys, Journal of engineering ,2010 vol 132. LIN.H.C, ,LIN.K.M,CHENG.I.S , “ EDM machining characteristics of TiNi shape memory alloy” Journal of material science Goryzka.T.Van Humbeeck.J, “Characterization of a NiTiCu shape memory alloy produced by powder technology” Journal of material science 11

PowerPoint Presentation:

CHEN.J, LI.Z,Zhao.Y.Y “ A High working temperature CuAlMnZr shape memory alloy” Journal of alloys and compounds. 12

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