| 摘要 |
The present invention relates to a cutting tool insert, particularly useful for machining of aluminiumalloys, comprising a cemented carbide substrate and a coating. The cemented carbide has a composition of 4-14 wt% Co, up to 5 wt% of the elements Ti, Ta, and/or Nb and/or Cr or other element from groups IVb, Vbor VIband rest WC. The coating is composed of one or more layers of refractory compounds of which at least one layer comprise ZrN. |
