| abstract |
The present invention discloses a coated cutting tool insert particularly useful for dry and wet machining, preferably milling, in low and medium alloyed steels, stainless steels, with or without raw surface zones under severe conditions such as vibrations, long overhang and recutting of chips. The insert is characterized by WC-Co cemented carbide with a W and Cr alloyed Co-binder phase and a coating including at least three TiC x N y O z layers and a top layer at least on the rake face of a smooth ±-Al 2 O 3 . |