Spanentstehungsprozeß an einer polierten, angeätzten Probe beim Orthogonalschnitt. Die Spanbildung wechselt wegen unterschiedlicher Orientierungen der groben Kristallite. Diese Orientierungsabhängigkeit der Spanungskenngrößen überdeckt den Einfluß der Schnittgeschwindigkeit (0,01 bis 10 m/min) auf die Spanentstehung. Mit Zeitdehnung.

The film shows how chippings are produced from a polished and etched testing workpiece made of the aluminium forging alloy AlCuMgPb during orthogonal cutting. Because of the coarse-crystalline structure with grains considerably larger than the maximum chip thickness, cutting causes the formation of chippings of varying appearances in individual crystals of differing orientation. The shearing area, chip-producing mechanism and visible deformation of the workpiece change with the different types of chip, from flowing chip to shearing chip. The influence of the cutting speed (0,01 to 10 m/min.), which is sometimes indicated by secondary shearing on the true rake, is usually concealed by the fact that the irregular chip-formation is a direct result of the structure orientation in this coarse, poly-crystalline material.