| 摘要 |
<p>The present invention discloses a coated cutting tool insert particularly useful for dry and wet machining, preferably milling, in un-, low- and high alloyed steels and cast iron, with or without raw surface zones. The insert is characterized by a WC-TaC-NbC-Co cemented carbide with a W alloyed Co-binder phase and a coating including an innermost layer of TiC x N y O z with columnar grains and a top layer at least on the rake face of a smooth ±-Al 2 O 3 .</p> |
