Sandvik Intellectual Property Ab

Sandvik Ab

Mats Ahlgren

Klaus Goedicke

Siegfried Schiller

Mikael Lindholm

Fred Fietzke

Olaf Zywitzki

Torbjörn Selinder

Mats Waldenstr&ouml;m

Magnus Oden

Maria Åstrand

Torbj&ouml;rn Selinder

Toril Myrtveit

Magnus Odén

Naureen Ghafoor

Lina Rogstrom

Andreas Hedin

Mats Johansson Joesaar

Helen Blomqvist

Anders Lundquist

Kjell Nordlöf

Arutiun Papken Ehiasarian

Papken Ehiasar Hovsepian

Carl-Fredrik CARLSTRÖM

Lina ROGSTRÖM

Mats JÖESAAR

Maria Åstrand

The present invention relates to a coated cutting tool with a coating comprising a multilayer structure consisting of alternating layers A and B forming the sequence A/B/A/B/A . . . or alternating layers A and B and an intermediate layer C between the alternating layers A and B forming the sequence A/C/B/C/A/C/B . . . . Layer A consists of ZrAlN and layer B consists of TiN. Layer C comprises one or more metal elements from each of layers A and B and is of different composition and structure than layers A and B. A method for forming the coated cutting tool is also provided. The method comprises heat treatment of the coated cutting tool prior to use.

Coated cutting tool and method of making the same

The present invention relates to a cutting tool for metal machining with improved wear properties, comprising a cutting tool substrate of cemented carbide, cermet, ceramics or a super hard material, and a wear resistant coating, wherein the wear resistant coating comprises a PVD Ti&#x2014;Si&#x2014;C&#x2014;N layer with a compositional gradient, and a method of making thereof.

Coated cutting tool and a method of making thereof

The present invention relates to a cutting tool for metal machining with improved wear properties, comprising a cutting tool substrate of cemented carbide, cermet, ceramics or a super hard material, and a wear resistant coating, wherein the wear resistant coating comprises a PVD Ti&#x2014;Si&#x2014;C&#x2014;N layer, and a method of making thereof.

The present invention relates to a coated cutting tool for metal machining with a from about 2.0 to about 20 &#x3bc;m thick PVD coating, having both the wear resistance of a coating of homogeneous layers and the toughness of a multilayer coating, comprising a first (Me,Me)(C,N,O) layer where Meis one or more of the elements in the transition metal group IV-VI, Al and Si and Meis one of the elements in the transition metal group IV-VI from about 1.0 to about 4.5 &#x3bc;m thick, a second (Me,Me)(C,N) layer where Meis one or more of the elements in the transition metal group IV-VI, Al and Si and Meis one of the elements in the transition metal group IV-VI and Y, from about 0.5 to about 4.5 &#x3bc;m thick, and in between the first and the second layer, an (Me, Me)(C,N,O) layer where Meis one or more of the elements in the transition metal group IV-VI, Al and Si and Meis one of the elements in the transition metal group IV-VI and Y, from about 0.1 to about 1.0 &#x3bc;m thick, where the thickness of the in between layer is less than about 0.5 times the thickness of thinnest of the first and the second layer and the layers in between has a composition differing from the first and the second layer, and a method of making thereof.

Coated cutting tool

The present invention relates to a cutting insert comprising a body of sintered cemented carbide, cermet or ceramic or high speed steel or the superhard materials such as cubic boron nitride or diamond said body being provided with a hard and wear resistant coating including a thin outermost coloring non-oxide layer whereby said color is created by thin film interference.

Coated cutting inserts

The present invention relates to a coated cutting tool insert of cemented carbide with coating including at least one layer of TiAlN deposited by PVD-technique. The layer has x=0.4-0.6 with a compressive residual stress of &#x3e;4-6 GPa and a thickness of 1.5-5, preferably 2.5-4 &#x3bc;m. Both the I(111) and I(200) are &#x3c;7.5, preferably &#x3c;5, times, the intensity average noise level. Good adhesion despite high compressive stress is obtained if the layer is deposited by cathodic arc evaporation technique at a bias in the range &#x2212;90&#x3c;U&#x3c;&#x2212;50V, preferably &#x2212;80V&#x3c;U&#x3c;&#x2212;60V.

PVD-coated cutting tool 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:

Insert for milling of steel

The present invention relates to a method of making a cemented carbide by mixing powder of WC and possibly other powders forming hard constituents and binder phase and pressing agent, drying, pressing and sintering whereby; the mixing is wet mixing with no change in grain size or grain size distribution of the hard constituent powders; the WC grains are coated with binder metal and deagglomerated prior to the mixing. The sintering is made by microwave sintering at 1325-1410&deg; C. with a holding time of 5-15 min. As a result a cemented carbide with improved properties is obtained.

Method of making cemented carbide

The present invention describes a coating cutting tool for metal machining and a process for producing such tools. The coating is composed of one or more layers of refractory compounds of which at least one layer consists of nanocrystalline aluminum spinel of the type (Me) Al O where Me is a second metal and 0<x&lE;1, deposited by Physical Vapor Deposition.

PVD coated cutting tool and method of its production

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Täby, Sweden

Mats Ahlgren