Abstract
This paper deals with the influence of the cooling strategy on thermo-mechanical tool load during turning of different hard-to-cut materials. The aim is to describe how to control the complex of loads acting on the cutting edge to achieve suitable conditions for different combinations of cutting tool material and workpiece material. As an introduction, measurements and analysis of tool temperature, cutting forces and wear behaviour during turning of TiAl6V4 and Inconel 718 with cemented carbide and high-pressure lubricoolant supply are presented. Based on these results the tool wear behaviour of whisker reinforced cutting ceramics during turning of Inconel 718 with high-pressure lubricoolant supply and conventional flood cooling is evaluated. Additionally this paper presents results of tool temperature, cutting forces and wear behaviour during turning of TiAl6V4 with cemented carbide under cryogenic conditions (LN2 and CO2-snow). The results of the tests under cryogenic conditions will be brought in line with the results of the high-pressure coolant supply. Thereby it is possible to qualify the amount of different wear mechanisms onto the total tool wear under different cooling conditions and to show how they can be influenced specifically.
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