Sandvik Intellectual Property Ab

Toril Myrtveit

Mats Ahlgren

Torbjörn Selinder

Leif Åkesson

Maria Åstrand

Markus Rodmar

Ibrahim Sadik

Kjell Nordlöf

Anders Lundquist

Maria Åstrand

The invention relates to a coated cutting tool comprising a substrate provided with a coating comprising a metallic interlayer placed in-between at least two non-metallic, functional layers or layer systems where the metallic interlayer comprises at least 60 at % metal elements chosen from one or more of Ti, Mo, Al, Cr, V, Y, Nb, W, Ta and Zr, or mixtures thereof, and wherein the at least two non-metallic, functional layers or layer systems is one or more of nitrides, oxides, borides, carbides, or combinations thereof, and wherein the thickness of the at least two non-metallic functional layer or layer systems is from about 3 to about 200 times the thickness of the metallic interlayer. The number of non-metallic, functional layers or layer systems alternated with metallic interlayers is at least 3. The invention also relates to a method of making a cutting tool according to the invention. Cutting tools according to the invention have an increased tool life.

Coated cutting tool and method of making a coated cutting tool

The present invention relates to a method of making a coated cutting tool comprising providing a substrate, depositing on said substrate a cathodic arc evaporation PVD coating of nitrides, oxides, borides, carbides, carbonitrides, carbooxynitrides, or combinations thereof wherein the coating during deposition is subjected to more than one ion etching step. Cutting tools made according to the present invention will exhibit an increased life time due to increased smoothness of the PVD coating which is due to a reduced number of surface defects.

Method of making a coated cutting tool and the resulting tool

The present invention relates to a coated cemented carbide milling insert for either wet or dry machining of cast iron such as nodular cast iron (NCI), grey cast iron (GCI), austempered ductile iron (ADI) and compacted graphite iron (CGI) where a high wear resistance and an excellent resistance against thermo cracks are required comprising:

Insert

The present invention relates to a cutting tool, e.g. carbide insert, solid carbide drill or mill or carbide tip, particularly for milling of steels, stainless steel, HRSA, titanium or any alloyed material from any of these groups, comprising a cemented carbide substrate and an aperiodic multilayer coating with:

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Kungsängen, Sweden

Toril Myrtveit