TOOL INSERTS

摘要

A tool insert, particularly for a turning or milling tool, comprising a cubic boron nitride compact having a thin, wear-resistant refractory layer bonded thereto and presenting a cutting edge. The refractory is preferably titanium nitride, titanium carbide or a mixture thereof. The insert is particularly useful for the cutting of ferrous material having a Rockwell C Hardness of less than 45.