An experimental analysis of effective high speed turning of superalloy Inconel 718 |
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Authors: | D G Thakur B Ramamoorthy and L Vijayaraghavan |
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Affiliation: | (1) Manufacturing Engineering Section, Mechanical Engineering Department, IIT-Madras, Chennai, 600 036, Tamil Nadu, India |
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Abstract: | Superalloy, Inconel 718 is widely used in the sophisticated applications due to its unique properties. However, machining
of such superior material is difficult and costly due its peculiar characteristics. The present article is an attempt to suggest
Taguchi optimization technique to study the machinability of Inconel 718 with respect to cutting force, cutting temperature,
and tool life in high speed turning of Inconel 718 using cemented tungsten carbide (K20) cutting tool. Therefore, the objective
of this work is divided into two phases: (i) to demonstrate a correlation between cutting speed, feed, and depth of cut with
respect to cutting force, cutting temperature, and tool life in a process control of high speed turning of Inconel 718 in
order to identify the optimum combination of cutting parameters; (ii) to show the effect of high speed cutting parameters
on the tool wear mechanism and chip analysis. These correlations were obtained by multiple linear regressions. The confirmation
tests were carried out to make a comparison between the experimental results and mathematical models proposed. The proposed
models agree well with the experimental results. |
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