INFLUENCE OF MATERIAL PROPERTIES ON SURFACE INTEGRITY AND CHIP FORMATION IN HIGH SPEED TURNING

摘要

The aim of the presented work was to examine the effects of high speed cutting conditions on the chip formation and the surface integrity. As work materials, the carbon steels C15 and C45 were used with different heat treatment conditions and different grain sizes. The investigations show that an increase of cutting speed leads to more segmented chips for all machined materials, even more for the materials with the larger grain size. Simultaneously with this stronger segmentation the forces decrease and the surface quality is improved. An impairment of the component quality and the surface integrity with increasing cutting speed could not be proven. The residual stress depth profiles was only slightly affected by the cutting speed increase towards higher tensile residual stresses. Within the projects "Einflub des Werkstoffs auf die Spanbildung bei hohen Schnittgeschwindigkeiten~1" (E. Brinksmeier) and "Einflub charakteristischer Werkstoffeigenschaften auf die Spanbildung bei der Hochgaschwindigkeitszerspanung~2" (Dr. T. Lubben, Prof. P. Mayr) funded by the Deutsche Forschungsgemeinschaft (DFG) further investigations well be carried out.