CEMENTED CARBIDE COATED CUTTING TOOL INSERT FOR PARTING AND GROOVING HEAT RESISTANT ALLOYS AND STAINLESS STEEL

摘要

The present invention relates to a cutting insert for parting and grooving in heat resistant super alloys and stainless steels comprising a substrate and a coating. The substrate consists of 5-7 wt-% Co and 0.15-0.60 wt-% TaC and 0.10-0.50 wt-% NbC and balance WC. The coating comprises a homogeneous Al_xTi_1-xN-layer with x=0.6-0.7 and a thickness of 1-3.8 µm.