Beschichteter Fräseinsatz

摘要

The present invention discloses a coated cemented carbide cutting tool(indexable inserts) for the wet or dry milling, particularly at high cutting speeds, of stainless steels of different composition and microstructure, but also for the milling of non-stainless steels such as low carbon steels and low and medium alloyed steels. The coated WC-Co based cemented carbide insert is characterized by a specific composition range of WC-Co without any addition of cubic carbides, by a low W-alloyed Co binder and by a narrow range defined average WC grainsize, and a hard and wear resistant coating including a multilayered structure of sublayers of the composition (TixAl1-x)N with repeated variation of the Ti/Al ratio.