Tribological behaviour of the tool-workpiece kinematic pair in machining of impregnated sintered materials

BUONADONNA, PASQUALE;DIONORO, GENNARO

2006-01-01

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Abstract

The result of front-end turning tests performed on porous materials preimpregnated in the cutting zone with a rosin solution in ethanol are presented. Impregnation substantially improves some tribological properties of the tool-workpiece kinematic pair, such as wear and energy dissipation during machining. Tool wear during machining is known to reduce tool-workpiece interference. Thus it was necessary to introduce a geometric correction parameter, so that the quality measured could be referred to the unit area of the chip removed. Analysis of the experimental result has shown that machining of porous materials undeniably benefits from localised impregnation in the cutting zone, opening up new opportunities for simple low-cost industrial applications.