Contribution à l’optimisation de la durée de vie d’un outil de coupe par l’application d’un champ magnétique

Abstract

In this work we studied the effect of magnetic field on the tribological behavior of the cutting tool during manufacturing operations starting from the mass wear characterized by mass loss, morphology wear mode, chips morphology and manufacturing the cutting temperature. In the presence of magnetic field in the contact manufacturing leads to reduction wear and radically changes the nature of mode wear. There is a critical intensity of the magnetic field H = 16. 5 KA / m, for which the wear of the cutting is minimal and the cutting edge is preserved. With regard to, the scanning electron microscope (SEM) and optical microscope observations revealed the existence of three modes of wear: frontal, in crater and by plastic deformation, in absence of the magnetic field. On the other hand, in the presence of the magnetic field with wear in crater. Moreover, the increase of the magnetic field modifies the shape and the morphology of chips and it rises the contact of temperature as well. The study of the effect of magnetic field on the tribological behavior of the cutting tool during manufacturing operations permitted to collect information likely to be employed in technological applications during processes of manufacturing and techniques of manufacture of the cutting tools. In general, the application of a magnetic field for cutting tool appears as a simple, effective and inexpensive to increase their lifetime and contribute to the optimization of the production tool.