Sandvik Intellectual Property Ab

Sandvik Ab

Katarina Dahl

Ingemar Hessman

Peter Littecke

Gunilla Andersson

Anders Karlsson

Jan Kjellgren

Anders Karlson

A CVD-coated cutting tool insert with improved toughness properties having the ability to withstand high temperatures without sacrificing edge line security is disclosed. The insert coating comprises a TiCN-layer with a low tensile stress level of 50-500 MPa and an &#x3b1;-AlO-layer with a high surface smoothness with a mean Ra&#x3c;0.12 &#x3bc;m as measured by AFM-technique, obtained by subjecting the coating to an intensive wet blasting operation.

Coated cutting tool insert

The present invention relates to a method of milling a material comprising aluminum and cast iron. By using a silicon nitride based cutting tool insert at a cutting speed of more than 1000 m/min, an unexpected increase in tool life has been obtained.

Method of milling engine blocks

Growing community of inventors

Sandviken, Sweden

Katarina Dahl