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Sandvik Intellectual Property Ab

Tommy Larsson

Mats Johansson

Jon Andersson

Andreas J Larsson

Hindrik Engstrom

Oscar Alm

Lennart Karlsson

Anna Sandberg

Lars Hultman

Jacob Sjölén

Jan Engqvist

Jenni Zackrisson

Erik Lindahl

Dirk Stiens

Rachid M'Saoubi

Sakari Ruppi

Jan Qvick

Silvia Dahlund

Per Alm

Axel Flink

Jonas Lauridsen

Peter Matsson

Malin Rydert

Peter Lofroth

Hanna Kallerhult

Peter LÖFROTH

Hindrik Engström

Jacob Sjölen

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 having a cemented carbide substrate and a coating including a layer of NbN, wherein the cemented carbide substrate includes 11-12.5 wt % cobalt, 0.2-1.2 wt % chromium, and 86.3-88.4 wt % wolfram carbide.

Coated cutting insert

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

A cutting tool insert for machining by chip removal comprising 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, and the methods of making and using the same. The coating includes at least one &#x3b1;-AlOlayer with a thickness between 0.5 &#x3bc;m and 40 &#x3bc;m having a {01-15} and/or {10-15} texture exhibiting excellent wear and metal cutting performance.

Textured alumina layer

A cutting tool insert for machining by chip removal includes a body of polycrystalline cubic boron nitride compact (PCBN), either as a solid insert or attached to a backing body, onto which a hard and wear resistant PVD coating is deposited. The coating includes a polycrystalline nanolaminated structure of alternating A and B layers, where layer A is (Ti,Al,Me1)N and Me1 is one or more of the metal elements from group 3, 4, 5 or 6 in the periodic table, layer B is (Ti,Si,Me2)N and Me2 is one or more of the metal elements from group 3, 4, 5 or 6 in the periodic table including Al with a thickness between 0.5 and 10 &#x3bc;m. The insert is particularly useful in metal cutting applications generating high temperatures, e.g., high speed machining of steels, cast irons, super alloys and hardened steels.

Nanolaminated coated cutting tool

The present invention relates to a cutting tool insert, solid end mill, or drill, comprising a substrate and a coating. The coating is composed of one or more layers of refractory compounds of which at least one layer comprises a h-Me1Me2X phase, where Me1 is one or several of the elements V, Cr, Nb, and Ta and Me2 is one or several of the elements Ti, Zr, Hf, Al, and Si and X is one or several of the elements N, C, O or B. The ratio R=(at-% X)/(at-% Me1+at-% Me2) of the h-MelMe2X phase is between 0.5 and 1.0, preferably between 0.8 and 1.0 and X contains less than 30 at-% of O+B. This invention is particularly useful in metal cutting applications where the chip thickness is small and the work material is hard e.g. copy milling using solid end mills, insert milling cutters or drilling of hardened steels.

Thin wear resistant coating

A cutting tool insert includes a body of a hard alloy of cemented carbide, cermet, ceramics, cubic boron nitride based material or high speed steel. A hard and wear resistant coating, having at least one layer, to which an (Al,Cr)Olayer is applied. This insert is particularly useful for machining of steel and stainless steel. The coating with a total thickness of 2-20 &#x3bc;m has one or several layers, at least one of which is an (Al,Cr)Olayer with a thickness of 1-5 &#x3bc;m having a corundum phase crystalline structure and a composition (AlCr)Owith 0.4&#x2266;y&#x2266;0.6. The (Al,Cr)Olayer has a fiber texture with rotational symmetry in the direction of the coated surface normal to an inclination angle, &#x3c6;, of the basal planes relative to the coated surface normal or the inclination angle, &#x3c6;, for the highest peak in the pole plot with 70&#xb0; &#x3c;&#x3c6;&#x3c;90&#xb0; .

Oxide coated cutting insert

A cutting tool insert includes a body of a hard alloy of cemented carbide, cermet, ceramics, cubic boron nitride based material or high speed steel and a hard and wear resistant coating, including one or several layers, at least one of which is an (Al,Cr)Olayer. The coating, with a total thickness of 2-20 &#x3bc;m includes one or several layers, at least one of which is an (Al,Cr)Olayer with a thickness of 1-5 &#x3bc;m having a corundum phase crystalline structure and a composition (AlCr)Owith 0.5&#x2266;y&#x2266;0.7. The (Al,Cr)Olayer has a fiber texture with rotational symmetry in the direction of the coated surface normal with an inclination angle, &#x3c6;, of the basal planes relative to the coated surface normal or the inclination angle, &#x3c6;, for the highest peak in the pole plot with 20&#xb0;&#x3c;&#x3c6;&#x3c;55&#xb0;.

Coated cemented carbide inserts (cutting tools), particularly useful for wet or dry machining of steels and stainless steels, are disclosed. The cutting tool insert is characterized by a cemented carbide substrate and a coating formed from an about 0.5 to 5 &#x3bc;m thick innermost layer of (Ti,Al)N and an about 1 to 5 &#x3bc;m thick layer of (Al,Cr)O.

Coated cemented carbide inserts are particularly useful for wet or dry milling steels. The inserts are formed by a cemented carbide body including WC, NbC and a W-alloyed Co binder phase, and a coating including an innermost layer of TiCNO, with equiaxed grains, a layer of TiCNOwith columnar grains and a layer of &#x3b1;-AlO.

Coated cutting insert for milling applications

A coated cemented carbide insert is particularly useful for milling of cast iron, methods for making the insert, and methods of their use are disclosed. The insert is formed by a composition of the substrate of about 5-7 wt % Co, about 0.05-20 wt % total amount of the metals selected from the group consisting of Ti, Nb, Ta and combination thereof, and balance WC with a coercivity (Hc) of 1 about 4-19 kA/m and an S-value of about 0.81-0.96. The coating includes a homogeneous layer of (TiAl)N, where x is between about 0.25 and abut 0.50 with a crystal structure of NaCl type and a total thickness of between about 1.0 and about 5.0 &#x3bc;m as measured on the middle of the flank face.

Insert for milling of cast iron

Coated cemented carbide inserts, particularly useful for milling of cast iron, methods for making the inserts, and methods of their use are disclosed. The inserts are characterized by a composition of the substrate of about 5-7 wt % Co, about 0.05-2.0 wt % total amount of the metals selected from the group consisting of Ti, Nb,Ta and combination thereof, and balance WC with a coercivity (Hc) of 1 about 4-19 kA/m and an S-value of about 0.81-0.96. The coating comprises a homogeneous layer of (TiAl)N, where x is between about 0.25 and about 0.50 with a crystal structure of NaCl type and a total thickness of between about 1.0 and about 5.0 &#x3bc;m as measured on the middle of the flank face.

A cutting tool insert, particularly useful for machining of cast iron, comprising a body of a hard alloy of cemented carbide, cermet, ceramics, cubic boron nitride based material or high speed steel a hard and wear resistant coating; and at least (Al,Cr)Olayer applied to said body is disclosed. Methods of making a cutting tool insert are also disclosed. In addition, methods for machining of cast iron using the cutting tool inserts are disclosed.

Coated cemented carbide inserts (cutting tool), particularly useful for wet or dry milling of steels, are disclosed. The cutting tool insert is characterized by a cemented carbide body comprising WC, NbC and TaC, a W-alloyed Co binder phase, and a coating comprising an innermost layer of TiCNOwith equiaxed grains, a layer of TiCNOwith columnar grains and a layer of &#x3b1;-AlO.

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Angelsberg, Sweden

Tommy Larsson