Seco Tools Ab

Sandvik Intellectual Property Ab

Oscar Alm

Tommy Larsson

Hindrik Engstrom

Mats Johansson

Jon Andersson

Jan Engqvist

Erik Lindahl

Dirk Stiens

Sakari Ruppi

Peter Matsson

Malin Rydert

Jonas Lauridsen

A coated cutting tool includes a rake face, a flank face, and a cutting edge region between and adjoining the flank face and the rake face in a nose area of a cutting tool insert. The cutting edge region is intersected by an edge line and defines a cutting edge sector that defines an cutting edge radius, r. The coated cutting tool includes a substrate with a coating having a thickness between 1 μm and 40 μm, where the coating includes an α-AlOlayer and an MTCVD TiCN layer located between the substrate and the α-AlOlayer. The α-AlOlayer exhibits a texture coefficient TC(hkl), as measured by X-ray diffraction using CuKa radiation and θ-2θ scan, defined according to Harris formula where I(hkl) is the measured integrated area intensity of the (hkl) reflection with corresponding reference intensity I(hkl), and n is the number of reflections used in the calculation.

Coated cutting tool

A coated cutting tool insert includes a substrate of cemented carbide, cermet, ceramics, steel or cubic boron nitride having deposited thereon a coating having a total thickness of 60 &#x3bc;m, including one or more layers having a wear resistant layer of &#x3b1;-AlOof a thickness of 1 to 45 &#x3bc;m deposited by chemical vapour deposition (CVD). The &#x3b1;-AlOlayer includes at least two portions, a first thickness portion and a second thickness portion immediately on top of the first thickness portion. The first thickness portion has an essentially columnar &#x3b1;-AlOgrain structure, and at a transition from the first thickness portion to the second thickness portion the grain boundaries of at least 1 out of 25 neighboring grains of the &#x3b1;-AlOgrains undergo a directional change into a direction that is essentially perpendicular, 90&#xb1;45 degrees, to the grain boundaries in the first thickness portion.

Alumina coated cutting tool

A cutting tool insert for machining by chip removal includes a body of a hard alloy of cemented carbide, cermet, ceramics or cubic boron nitride based material onto which a hard and wear resistant coating is deposited by CVD. The coating includes at least one multitextured &#x3b1;-AlOlayer with a thickness between 0.5 &#x3bc;m and 30 &#x3bc;m characterized with an ODF texture index&#x3e;1 and at least two dominant texture components with 2&#x3c;ODF density&#x3c;100 coexisting within the layer. A method of making and using the cutting tool insert are also described.

Alumina layer with multitexture components

Growing community of inventors

Norberg, Sweden

Oscar Alm