Resumen

JACAS-CABRERA, Mario et al. Characterization of surface integrity of machined surfaces at high cutting-speed in 40XHMA steel. Ingeniería Mecánica [online]. 2013, vol.16, n.2, pp. 91-99. ISSN 1815-5944.

This work aims at the study of surface integrity on machined surfaces at high cutting speeds of the 40XHMA steel. The experiments were performed in a turning process with cutting schemes corresponding to polishing: Once machined, the specimens were subjected to different types of analysis: surface roughness, residual stresses, micro Vickers hardness and analysis of surface deformation .As a result it was shown that the variation of cutting speed had no significant effect on surface roughness values, showing a slight tendency to decrease it. In the tested samples zones of surface plastic-deformation were not observed. Nonetheless the micro Vickers hardness showed an increment in the machined surface and a decrease in residual stress with increasing cutting speeds was observed as well as.

Palabras clave : surface integrity; high-speed cutting; 40XHMA steel; 4340 steel.

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