Browse Publications Technical Papers 2020-01-0034
2020-03-10

Tool wear analysis on drilling process of Inconel 718 superalloy 2020-01-0034

The inconel 718 is an alloy based on nickel of high thermal and mechanical resistance, which allows its wide application in the aerospace industry, being generally implemented in aircraft tail cone and engine components. On the other hand, these features become a recurring problem when the machining of this material is performed. For example, in the drilling process of this superalloy, the cutting tools used exhibit excessive wear due to the high temperature and pressure at the cutting edge. However, there are numerous parameters that can influence the cutting tool life, and when analyzed and well defined, determine the types of modifications needed to enable less wear, and consequently an increase of its useful life in service. Given this context and knowing that the study of tool life in the inconel 718 drilling process is extremely relevant in the aerospace sector, this paper presents a wear study in order to evaluate the behavior of different types of cutting tools used to drill the Inconel 718. It was accomplished by the combination of different cutting parameters to perform the mechanical drilling tests on inconel 718 sheets, using the Taguchi method as a quality tool for process investigation, and consequently the wear analysis of the cutting tools.

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