Metallurgical Analysis of Chip Forming Process when Machining High Strength Bainitic Steels

Journal of Manufacturing and Materials Processing

Jean-Edouard Desaigues¹  Olivier Bomont²  Anne Bomont-Arzur³  Fares Haddad⁴  Christophe Lescalier⁴ 

[1] ArcelorMittal Global R&;D Bars &;D, Centre R&Laboratoire d’Etudes des Microstructures et de Mécanique des Matériaux, Ecole Nationale Supérieure d’Arts et Métiers Campus de Metz, Metz Technopôle, 4 rue Augustin Fresnel, 57078 Metz, France;

关键词: turning;    machinability;    bainitic steel;    chip formation mechanism;   

DOI  :  10.3390/jmmp3010010

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown