Thermo-Mechanical Tool Load during High Performance Cutting of Hard-to-Cut Materials

This paper deals with the influence of different cooling strategies on thermo-mechanical tool load during turning of different hard-to-cut materials. The aim is to describe the complex of loads acting on the cutting edge so as to choose suitable conditions for different combinations of cutting tool material and workpiece material. The titanium alloy TiAl6V4 and the nickel-based alloy Inconel 718 are the focus of this work. These workpiece materials are machined with cemented carbide and whisker reinforced ceramics. The effects of the lubricoolant strategies high-pressure lubricoolant supply and cryogenic cooling with CO2 and LN2 are compared.