Sandvik Intellectual Property Ab

Marie Pettersson

Susanne Norgren

Björn Ljungberg

Leif Åkesson

Ann-Britt Ljungberg

Andreas Hedin

Rickard Sundström

Axel Genvad

Emmanuelle Gothelid

Lars Gustafsson

Roberth Ljunggren

Emmanuelle GÖTHELID

Leif ÅKesson

The present disclosure relates to a coated cutting tool having a cemented carbide body and a 0.5-10 &#x3bc;m (Ti,Al,Cr)N nanolayered PVD coating with an average composition TiaAlbCrcN, wherein a=0.25-0.7, b=0.3-0.7 and c=0.01-0.2, a+b+c=1. The cemented carbide body has a composition of 5-18 wt % Co, 0.1-2.5 wt % Cr, 0-10 wt % carbides or carbonitrides of metals from groups 4, 5 and 6 in the periodic table of elements, and the balance WC.

Coated cutting tool

The present invention relates to a coated cutting tool comprising a PVD coating and a cemented carbide substrate comprising Co in an amount of 12.5-17 wt %, Cr in an amount such that the Cr/Co weight ratio is 0.05-0.15, a Ti of between 50 to 300 ppm by weight and a CW_Cr value between 0.8-0.97.

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&#x2014;Co cemented carbide with a W and Cr alloyed Co-binder phase and a coating including at least three TiCNOlayers and a top layer at least on the rake face of a smooth &#x3b1;-AlO.

Coated cutting tool insert

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Bandhagen, Sweden

Marie Pettersson