super hard cutter element, segment, blade insert or tool, insert for performing an interrupted cutting or roughing operation on a workpiece, and method for using a segment, insert or tool.

摘要

A superhard cutter element for machining a workpiece comprising wood, metal, ceramic material or composite material, the superhard cutter comprising a superhard structure (140) having a rake side (110) and a flank side (120), the rake side (110) and the flank side (120) enclosing a wedge angle ; and a protective layer (170) bonded to the superhard structure (140) at a rake interface (180) on the rake side (110), the protective layer (170) being softer than the material of the superhard structure (140).