Abstract
High-efficiency and high-precision machining technique of the Ni-based heat resistant alloy like Inconel 718 is important concern in the aviation industry. The study deals with the turning of Inconel 718 with SiAlON ceramics and polycrystalline cubic boron nitride (PCBN) tools in the cutting speed range from 200 to 400 m/min. The PCBN tool, which is made of cBN and new ceramic binder, have long tool-life with good surface integrity compared with SiAlON ceramics and conventional PCBN, because of the advantage in terms of its mechanical properties and low-affinity to heat resistant alloy.
