Metallurgical Analysis of Chip Forming Process when Machining High Strength Bainitic Steels
Article dans une revue avec comité de lecture
Date
2019Journal
Journal of Manufacturing and Materials ProcessingAbstract
In the following work, we propose a metallurgical approach to the chip formation process. We focus on a turning application of high strength steel in which chips are produced by adiabatic shear bands that generate cutting force signals with high frequency components. A spectral analysis of these signals is applied and highlights peaks above 4 kHz depending on the cutting conditions. A microscopic analysis on the chip sections provided data on chip breaking and serration mechanisms. Shear band spacing and excitation frequency of the whole cutting system were calculated and gave a good correlation with cutting forces spectra.
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