Ceramic Inserts Optimize High-Temp Alloy Machining

Walter USA, LLC has introduced a new series of ceramic inserts directed at machining high-temp alloys such as Inconel, Waspalloy and Stellite. The new inserts feature grades WIS10 and WWS20.

"Super alloys, because of the high cutting temperatures generated with greater tool stresses and increased tool wear, can be very tough on carbide tools typically used to machine them," said a company spokesperson. "Ceramics, though, because of their extreme hardness, heat resistance and wear resistance, can stand up to these demanding applications. Walter's two new complementary grades, silicon nitride-based WIS10 (Sialon ceramic) and WWS20 with whisker silicon carbides (whisker ceramic), are designed to deliver cutting speeds five to ten times higher than carbide in roughing and semi-finishing operations."

The self-reinforced structure of silicon nitride ceramics and enhanced chemical stability are intended to provide the WIS10 with improved notch wear resistance and enhanced machining of heat resistant high temp alloys. The WWS20 is designed to provide improved fracture and crack resistance due to its whisker fibers, and is designed for use with nickel-based alloys and difficult conditions, such as machining forged out-of-round workpieces with uneven surfaces. It is also designed for hard machining of steel.

Walter supplies ceramic inserts in diamond, round and square shapes (CN, DN, RC, RP, RN and SN formats), with different cutting edge designs for turning and milling. In addition, Walter supplies toolholders with carbide shoe and clamping system.

For more information contact:

Walter USA, LLC

N22 W23855 Ridgeview Pkwy. West

Waukesha, WI 53188

800-945-5554

www.walter-tools.com/us