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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License
Article
Heat Flow into the Tool in Cutting Super Alloy Inconel 718
Author(s)
Thorsten Augspurger, Bingxiao Peng, Fritz Klocke and Benjamin Döbbeler
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DOI:10.17265/2159-5275/2018.01.001
Affiliation(s)
Laboratory for Machine Tools and Production Engineering, RWTH Aachen University, Aachen 52074, Germany
ABSTRACT
Cutting super alloy is a highly sensitive manufacturing process
regarding the complex thermo-mechanical interactions in the cutting zone, which
finally determine the capability of the process in order to reach economic
requirements. The connection between the intensity of heat sources as well as
heat partitions into the tool, work piece and chip is yet not fully understood.
Thus heat flows and other thermal conditions in the cutting zone cannot be
predicted satisfactory, though they influence the chip formation mechanics, the
surface integrity, respectively functionality of the machined work piece as
well as the tool wear and lifetime. Because of this deficit the ecological and
economical design of the manufacturing process is still limited and often not
knowledge based. The proposed paper presents a methodology in order to measure
and predict heat flows respectively affiliated temperatures during cutting
nickel-base super alloy (Inconel 718). The heat flows in the cutting zone are determined by
infrared thermography and a further energy balance by post processing the
thermal images. A FE-model for chip formation simulation, which is based on CEL (Coupled-Eulerian-Lagrange)
formulation, was used to calculate the heat flows. Finally, the results of the
simulation and the experiments were compared.
KEYWORDS
Inconel 718, orthogonal cutting, temperature, heat partition.
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