Kennametal's New Turning Grade with Special Sputtering
Kennametal introduces KCS10B, the newest and most advanced turning grade for nickel, cobalt, and iron-based superalloys used in high temperature applications, especially in aerospace. It features new High-Power Impulse Magnetron Sputtering (High-PIMS), a revolutionary coating applied to an ultra-fine grain carbide substrate for superior layer adhesion. Instead of the light rain of droplets that fall on cutting tools during customary PVD coating processes. This sputtering generates a fine mist of AlTiN, building a series of “extremely thin, smooth, and wear-resistant layers.”
Further overcomes challenges of two wear modes (cratering & depth-of-cut notching) encountered in turning superalloys (like Inconel 718 & Stellite 31) which often leads to unexpected and even catastrophic tool failure. The turning grade is proven to reduce DOC notching and extend tool life from 3 minutes to upwards of 5 minutes in roughing activities. Tool life in finishing operations fares even better, with visible cratering and subsequent tool failure often delayed by a factor of two or three compared to other serious brands. Positive and negative rake embeds are available, as well as various chip formers, edge preparations, and geometries, making it the perfect solution when turning iron-based (S1), cobalt-based (S2), or nickel-based (S3) alloys.
“Aside from a smoother surface, the new coating process also allows us to create a much sharper edge,” said Robert Keilmann, Senior Global Product Manager - Turning Products, Kennametal. “Our advanced honing and edge-preparation process reduces the friction that leads to heat, which further improves tool life. It also means less built-up edge, another common failure mode in super alloy materials. When coupled with the excellent dimensional accuracy that Kennametal turning inserts are known for, shops can now expect the increased performance, stability, and predictability needed to be successful with these challenging alloys.”
For more information: www.kennametal.com
