CBC turning inserts
CBC Cubic Boron Carbide turning inserts are manufactured from superhard materials with a Vickers hardness between 3200 and 3500. This level of hardness is approximately twice that of tungsten carbide, making them ideal for machining superalloys, hardened steels over 55 HRC, and high-resistance cast irons. These inserts can withstand temperatures up to 1200°C and perform exceptionally well in dry cutting and high-speed operations. Their standard relief angles range from 7 to 11 degrees to maintain a balance between edge strength and smooth cutting action.
The typical thickness of CBC inserts ranges from 3.18 to 6.35 mm, and their nose radius varies between 0.4 and 1.2 mm. CBC inserts are usually uncoated, as their natural wear resistance and chemical stability eliminate the need for surface coatings. Common geometries like SNGA and CNGA are optimized for finishing hardened steels and minimizing machining vibrations, enhancing tool life and dimensional precision.
