Abstract: The monoblock surface milling cutter has a milling cutter body (10) to which cutting plates (16) made of polycrystalline diamond (PCD), monocrystalline diamond (MCD) or polycrystalline boron nitrite (PCB) are fastened in a material-to-material fashion. In order to improve the surface quality of the work pieces manufactured with the milling cutter, axially adjustable finishing inserts (18) are fixed in place in at least two substantially axially extending bores (26), which are open at the front, of the milling cutter body (10). The finishing inserts (18) can also be equipped with cutting plates made of PCD, MCD or PCB. Preferably the cutting edges (24) of the cutting plates (22) of the finishing insert (18) are forward curved.

Abstract: A surface coated cutting tool having, on a surface of a substrate, a hard coating layer including at least an aluminum oxide layer, the surface having a rake face on a main face thereof and a flank on a side face thereof, wherein, when a value calculated by the following equation (I) is a texture coefficient TC of the (HKL) plane of the aluminum oxide layer, a ratio of a texture coefficient TCR on the rake face to a texture coefficient TCF on the flank, TCF/TCR, is in a range of 0.3 to 0.95. TC = I ? ( HKL ) / I O ? ( HKL ) 1 / 6 ? ? ? [ I ? ( hkl ) / I 0 ? ( hkl ) ] ( I ) where I(HKL), I0(HKL) and ?[I(hkl)/I0(hkl)] are as described in the specification.

Abstract: Provided is a surface-coated tool, such as a cutting tool, in which a surface of a substrate 2 is coated with a coating layer 6. The coating layer 6 comprises a lower layer 8 and an upper layer 9. The lower layer 8 and the upper layer 9 are both composed of columnar particles 10 extending vertically with respect to the surface of the substrate 2. The mean crystal width of the columnar particles 10b constituting the upper layer 9 is smaller than the mean crystal width of the columnar particles constituting the lower layer. Dispersed particles containing tungsten exist in both the lower layer and the upper layer. The distribution density of the dispersed particles existing in the upper layer is smaller than the distribution density of the dispersed particles existing in the lower layer. The surface-coated tool includes the coating layer to improve wear resistance and fracture resistance.

Abstract: 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—Si—C—N layer with a compositional gradient, and a method of making thereof.

Abstract: Provided are a cutting insert and a cutting tool, capable of maintaining cutting performance for a long time. The cutting insert has a cutting blade made of a ceramic including the base and the cutting blade integrated with each other, wherein the base has a first coefficient of thermal expansion larger than a second coefficient of thermal expansion that the cutting blade has; and a difference between the first coefficient and the second coefficient is from more than 0 ppm/K to not more than 3 ppm/K.

Abstract: The invention concerns a cutting tool comprising a base body and a multi-layer coating applied thereto, which, possibly besides further layers, includes a plurality of main layers A and intermediate layers B applied alternately directly one upon the other, wherein the main layers A and the intermediate layers B are respectively metal oxide layers produced by the PVD process, the thickness of the main layers A is in the range of 4 nm to 1 ?m, and the thickness of the intermediate layers B is in the range of 2 nm to 50 nm, wherein the ratio of the thicknesses of the intermediate layers B to the thicknesses of the main layers A is in the range of 1:2 to 1:100.

Abstract: A surface-coated cutting tool includes a coating layer (108) formed on a substrate (104), wherein assuming that the average thickness of the coating layer (108) on a first surface (106) and a second surface (107) of the substrate (104) is A, a difference between the maximum and minimum thicknesses of the coating layer (108) is 0.04×A or less. Also, a surface-coated cutting tool includes a coating layer (108) formed on a substrate (104), wherein assuming that the average thickness of the coating layer (108) on a first surface (106) of the substrate (104) is B1, and the average thickness of the coating layer (108) on a second surface (107) of the substrate (104) is B2, a value obtained by dividing an absolute difference value between B1 and B2 by a larger value of B1 and B2 is 0.04 or less.

Abstract: The present invention provides an optimized hard coating and a workpiece, especially a cutting tool coated with a hard coating to increase tooling performance with difficult to machine materials such as high speed steels, titanium alloys, nickel alloys, austenitic steels and especially hard materials like hardened tool steel having a hardness of higher 50, preferably of higher 55 HRC. This is achieved by a workpiece coated with a wear resistant multilayered comprising at least a first supporting layer and a second nanocrystalline layer, whereas the first layer comprises a coating material of the following composition (TiaAl1-a)N1-x-yCxOy with 0.4<a<0.6, and 0?x and y<0.3, or (AlbCr1-b)N1-x-yCxOy with 0.5<b<0.7, and 0?x and y<0.3. The second layer comprises a coating material of the following composition (Al1-c-d-eCrcSidMe)N1-x-yCxOy whereas M stands for at least one element of the transition metals of group 4, 5, 6 of the periodic system except Chromium and 0.2<c?0.35, 0<d?0.

Abstract: The present invention provides an optimized hard coating and a workpiece, especially a cutting tool coated with a hard coating to increase tooling performance with difficult to machine materials such as high speed steels, titanium alloys, nickel alloys, austenitic steels and especially hard materials like hardened tool steel having a hardness of higher 50, preferably of higher 55 HRC. This is achieved by a workpiece coated with a wear resistant multilayered comprising at least a first supporting layer and a second nanocrystalline layer, whereas the first layer comprises a coating material of the following composition (TiaAl1-a)N1-x-yCxOy with 0.4<a<0.6, and 0?x and y<0.3, or (AlbCr1-b)N1-x-yCxOy with 0.5<b<0.7, and 0?x and y<0.3. The second layer comprises a coating material of the following composition (Al1-c-d-eCrcSidMe)N1-x-yCxOy whereas M stands for at least one element of the transition metals of group 4, 5, 6 of the periodic system except Chromium and 0.2<c?0.35, 0<d?0.

Abstract: Provided is a cutting tool which comprises a sintered cermet having high toughness and thermal shock resistance. The cutting tool, namely a tip 1, comprises a sintered cermet comprising: a hard phase 11 comprising one or more selected from among carbides, nitrides, and carbonitrides which comprise mainly Ti; and a binder phase 14 comprising mainly at least one of Co and Ni. The tip 1 has a cutting edge 4 lying along an intersecting ridge portion between a rake face 2 and a flank face 3, and a nose 5. The hard phase 11 comprises a first hard phase 12 and a second hard phase 13.

Abstract: A polycrystalline diamond compact useful for wear, cutting, drilling, drawing and like applications is provided with a first diamond region remote from the working surface which has a metallic catalyzing material and a second diamond region adjacent to or including the working surface containing a non-metallic catalyst and the method of making such a compact is provided. This compact is particularly useful in high temperature operations, such as hard rock drilling because of the improved thermal stability at the working surface.

Abstract: An uncoated cutting tool that comprises a body containing a pocket. A polycrystalline cubic boron nitride blank has a cutting tip. The blank is brazed into the pocket using a braze alloy whereby there is a braze joint between the body and the polycrystalline cubic boron nitride blank. The braze alloy has a liquidus temperature of at least about 900 degrees Centigrade wherein the braze alloy is selected from the group comprising a nickel-gold braze alloy containing nickel and gold, a copper-gold braze alloy containing copper and gold, a silver-titanium braze alloy containing silver and titanium, and a silver-palladium braze alloy containing silver and palladium.

Abstract: The present invention relates to ceramic cutting tools, such as, a aluminum oxide with zirconium oxide ceramic cutting tool with diffusion bonding enhanced layer and CVD coatings, particularly useful for machining modern metal materials. The method comprises a chemical reaction with a mixture including nitrogen and aluminum chloride introduced to form a diffusion bonding enhanced layer between the ceramic substrate and the CVD coatings. Thus formed diffusion bonding is highly adherent to the aluminum oxide with zirconium oxide ceramic substrate and significantly enhances the CVD coating properties, and thus improving the machining performance in terms of the tool life of zirconium-based aluminum oxide with zirconium oxide ceramic cutting tools.

Abstract: A cermet comprises a binding phase made of a binding metal including Co and/or Ni. The binding phase is 5 to 30 mass %. The cermet further comprises a plurality of hard particles bound each other with the binding phase. The hard particles comprise core-containing structure particles having cores and shells both including TiCN. The core-containing structure particles comprise first core-containing structure particles of which shells contain the binding metal and second core-containing structure particles of which cores and shells both contain the binding metal.

Abstract: A coated ceramic cutting insert for removing material from a workpiece, as well as a method for making the same, that includes a ceramic substrate with a rake surface and at least one flank surface wherein a cutting edge is at the juncture therebetween. A wear-resistant coating scheme that includes an alumina-containing base coating layer region, which has at least one exposed alumina coating layer, deposited by chemical vapor deposition on the substantially all of the surfaces of the ceramic substrate that experience wear during removal of material from the workpiece. The exposed alumina coating layer exhibits a blasted stress condition ranging between about 50 MPa (tensile stress) and about ?2 GPa (compressive) as measured by XRD using the Psi tilt method and the (024) reflection of alumina. The exposed alumina coating layer is the result of wet blasting a titanium-containing outer coating layer region from the surface of the alumina-containing base coating layer region.

Abstract: A cutting tool is disclosed. The cutting tool comprises a substrate and a coating layer on the substrate. The coating layer consists of nitride or carbonitride containing Ti and Al, and has a thickness of 3 to 9 ?m on a flank face. A first intensity ratio I(400)/I(311) of the coating layer on an outer surface is larger than the first intensity ratio of the coating layer on the substrate side.

Abstract: An apparatus for the machining of optical workpieces of materials of non-brittle hardness, particularly of plastics material spectacles lenses, has a holder, which is operatively connected with an actuator for reciprocating movement, and a support, which is fixable to the holder and to which a cutting tip of monocrystalline diamond, which has an arcuate cutting edge, is fastened. In order to be able to use the cutting edge over its curve length to avoid of premature wear in the rotary machining, provision is made for a positioning device, by which the support is fixable in at least two different relative positions with respect to the holder to dispose substantially different circumferential sections of the cutting edge for the rotary machining.

Abstract: A machining process and apparatus capable of increasing removal rates achievable when machining titanium and its alloys. The process includes heating a portion of a workpiece with a laser beam, cryogenically cooling a cutting tool with a cryogenic fluid without flowing the cryogenic fluid onto the workpiece, and machining the heated portion of the workpiece with the cutting tool. The apparatus includes a cutting tool, a device for heating a portion of a workpiece with a laser beam prior to being machined with the cutting tool, and a device for cryogenically cooling the cutting tool with a cryogenic fluid without flowing the cryogenic fluid onto the workpiece. The cryogenic fluid is circulated around the cutting tool to achieve a temperature differential between the workpiece and the cutting tool that is capable of improving removal rates and extending tool life at cutting speeds of, for example, above 100 m/min.

Abstract: The invention is directed to a cylindrical milling cutter whose cylindrical body is provided with grooves which extend along its length at a distance from one another and at an angle to the longitudinal axis, and indexable cutting inserts, particularly coated carbide cutting inserts, are arranged in these grooves.

Abstract: The present invention relates to a cutting tool insert 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, comprising one or several layers, at least one of which an (Al,Cr)2O3 layer is applied. This invention is particularly useful for machining of steel and stainless steel. The coating with a total thickness of 2-20 ?m comprises one or several layers, at least one of which is an (Al,Cr)2O3 layer with a thickness of 1-5 ?m having a corundum phase crystalline structure and a composition (Al1-yCry)2O3 with 0.4?y?0.6. The (Al,Cr)2O3 layer is further characterized having a fiber texture with rotational symmetry in the direction of the coated surface normal with an inclination angle, ?, of the basal planes relative to the coated surface normal or the inclination angle, ?, for the highest peak in the pole plot with 70°<?<90° as determined by, e.g.

Abstract: 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, including one or several layers, at least one of which is an (Al,Cr)2O3 layer. The tool is particularly useful for machining steel and stainless steel. The coating, with a total thickness of 2-20 ?m includes one or several layers, at least one of which is an (Al,Cr)2O3 layer with a thickness of 1-5 ?m having a corundum phase crystalline structure and a composition (Al1-yCry)2O3 with 0.5?y?0.7. The (Al,Cr)2O3 layer has a fiber texture with rotational symmetry in the direction of the coated surface normal with an inclination angle, ?, of the basal planes relative to the coated surface normal or the inclination angle, ?, for the highest peak in the pole plot with 20°<?<55°.

Abstract: A cutting insert for use in chipforming and material removal from a workpiece wherein coolant is supplied to the cutting insert from a coolant source. The cutting insert includes at least one discrete cutting location and at least one distinct internal channel that corresponds to the cutting location. The internal channel has an inlet to receive coolant and an outlet to exit coolant. The outlet is proximate to the cutting location, and the inlet is radial inward of the outlet.

Abstract: A metalcutting insert that is useful in chipforming and material removal from a workpiece The metalcutting insert includes a metalcutting insert body, which includes a cutting edge having at least one discrete cutting location. The metalcutting insert body further contains a distinct interior coolant passage communicating with the discrete cutting location. The distinct interior coolant passage has a coolant passage inlet defining a coolant passage inlet cross-sectional area, a coolant passage discharge defining a coolant passage discharge cross-sectional area, and an axial coolant passage length. The distinct interior coolant passage defines a coolant flow cross-sectional area along the axial coolant passage length thereof. The coolant passage inlet cross-sectional area is substantially the same as the coolant passage discharge cross-sectional area. The geometry of the coolant flow area changes along the axial coolant passage length.

Abstract: A cubic boron nitride radius end mill includes a sintered cubic boron nitride compact bonded to an end of a main body, and a cutting edge provided on the sintered cubic boron nitride compact. The wedge angle ?t of the cutting edge is constant over the entire region of the cutting edge. A negative rake face is disposed on a face so as to extend over the entire region of the cutting edge, and the rake angle ?n of the negative rake face satisfies the relationship ?30°??n??50°. A joint cutting edge is disposed between an end cutting edge and a radius cutting edge in the cutting edge, the joint cutting edge having a concave angle ?0 which is smaller than the concave angle ?1 of the end cutting edge and which satisfies the relationship 0.5°??0?2°.

Abstract: The present disclosure relates to cutting tool edges that include on a rake face a superabrasive layer and a HPHT sintered or HPHT bonded cap layer. The cap layer improves adhesion between the superabrasive layer and an optional coating system for the cutting insert and acts as a thick anti-friction layer and/or a thermal barrier coating.

Abstract: There is provided a joined product suitable as a cutting tool that is fit for high-speed cutting, CVD coating process and the like, and does not cause a reduction in joint strength of a joining layer even if a high temperature exceeding a temperature at which a brazing filler forms the liquid phase is reached during cutting. Specifically, the joined product includes a cemented carbide sintered compact serving as a first material to be joined and a cBN sintered compact or a diamond sintered compact serving as a second material to be joined. The first material to be joined and the second material to be joined are joined by a joining material that does not form a liquid phase at a temperature lower than 1000° C. and that is placed between the first material to be joined and the second material to be joined. The joining is performed by resistance heating and pressing at a pressure of 0.1 to 200 MPa.

Abstract: A indexable insert (1) of the present invention has a structure including at least a rake face (2) and a bearing surface (5), the indexable insert (1) including a substrate and a coating layer disposed on the substrate, wherein the coating layer includes one or more layers, and at least one layer of the one or more layers covers the entire surface of the substrate and satisfies the relationship F1<F2, wherein F1 represents the residual stress in the rake face (2) and F2 represents the residual stress in the bearing surface (5).

Abstract: A coated cutting tool includes a coating and a substrate. The substrate is at least partly coated with a 4-10 ?m thick coating comprising two adjacent Ti(C,N)-layers where the difference (?) between the residual stress state of the inner layer and the residual stress state of the outer layer is 1000 MPa???2500 MPa, on at least a part of the cutting edge and/or on at least a part of the rake face. A method to produce such a difference between the residual stress states is also disclosed.

Abstract: Disclosed is a diamond tool. The diamond tool is coupled to a processing apparatus and may form a hole in a workpiece. The diamond tool includes a shank coupled to a connection portion formed at one end thereof and further coupled to the processing apparatus. There is a cylindrical opening formed at the other end of the shank; and segments formed at intervals along the periphery of the shank, the segments come into contact with the workpiece to form a hole in the workpiece. Each of the segments has at least one linear groove formed on the inner surface thereof or at least one oblique groove formed on the outer surface thereof. The segments are improved in shape to achieve improved cutting and cooling performance, increased stiffness and durability, and reduced load upon processing.

Abstract: A combination tool and method for metal-cutting machining of a drill-hole and its hole surface as well as cutting insert for such a combination tool.

Abstract: A work piece or structural component is coated with a system of film layers at least one of which is composed of (AlyCr1-y)X, where X?N, C, B, CN, BN, CBN, NO, CO, BO, CNO, BNO or CBNO and 0.2?y<0.7, with the composition within said film being either essentially constant or varying over the thickness of the film continually or in steps, as well as a process for producing it.

Abstract: A composite article includes a first composite material and a second composite material. The first composite material and the second composite material individually comprise hard particles in a binder. A concentration of ruthenium in the binder of the first composite material is different from a concentration of ruthenium in the binder of the second composite material.

Abstract: A cutting tool includes a cutting insert releasably retained therein. The cutting insert has top and bottom surfaces and a peripheral surface extending therebetween. The cutting insert does not include any clamping bore for receiving a clamping component therein. The cutting insert may having unitary, one-piece construction and be formed of a superabrasive material. The cutting insert may have a two-headed arrow shape, or similar shapes, such that the body of the cutting insert is small relative to the cutting regions thereof. The cutting tool includes a top clamp for clamping the cutting insert in an insert pocket. The top clamp has an asymmetrical shape and engages the cutting insert in one engagement region on the top surface, and in one engagement region on the peripheral surface. The cutting insert engages the insert pocket at the bottom surface, and in three spaced apart engagement regions on the peripheral surface.

Abstract: A method of creating adherent surface coatings on carbide cutting tools or other workpiece substrates through the development of polycrystalline diamond coatings or composite coatings comprising a refractory metal carbide and polycrystalline diamond is described. The coating is deposited through a sequenced chemical vapor deposition process, first using a specified gas mixture of hydrogen and a refractory metal halide to deposit a base layer of a refractory metal carbide. This step is followed by a second step in which polycrystalline diamond is deposited from a gas mixture comprising a hydrocarbon and hydrogen. Co-deposition of refractory metal carbide and diamond in the second step to create a toughened diamond coating is also contemplated.

Abstract: A method of creating adherent, fracture-toughened polycrystalline diamond coatings on carbide cutting tools or other workpiece substrates through the development of composite coatings comprising polycrystalline diamond and carbon nanotubes is described. The coating is deposited through a chemical vapor deposition process using a pre-determined hydrocarbon-hydrogen gas mixture suitable for nucleating diamond on the carbide particles and carbon nanotubes on the metallic binder. The deposited coating, which may be up to 30 micrometers in thickness, is typically characterized by a diamond or diamond-like carbon matrix in which carbon nanotubes are distributed as fiber-like filler materials.

Abstract: A coated cutting tool is at least partially coated with a diamond-like carbon (DLC) multilayer of alternating DLC layers and metal nanolayers sandwiched between the DLC layers. The nanolayer comprises a metal or a metal alloy comprising two or more elements selected from of groups IVB, VB, VIB of the periodic table, Al, and Si. Each DLC layer has a thickness of at least 0.2 microns thick and the coating has a thickness of from about 0.5 microns to about 30 microns.

Abstract: An indexable cutting insert (1) of the present invention includes at least one face (2), at least two flanks (3), at least one edge line (4), at least one corner (9), and a base layer having a different color from a use-state indicating layer. The use-state indicating layer is formed on at least one of the flanks (3) so that the use-state indicating layer is formed on the base layer over the entire surface or a part of a region A2 excluding at least one region A1 of 2 mm2 containing at least one corner (9).

Abstract: Composite articles, including composite rotary cutting tools and composite rotary cutting tool blanks, and methods of making the articles are disclosed. The composite article includes an elongate portion. The elongate portion includes a first region composed of a first cemented carbide, and a second region autogenously bonded to the first region and composed of a second cemented carbide. At least one of the first cemented carbide and the second cemented carbide is a hybrid cemented carbide that includes a cemented carbide dispersed phase and a cemented carbide continuous phase. At least one of the cemented carbide dispersed phase and the cemented carbide continuous phase includes at least 0.5 percent by weight of cubic carbide based on the weight of the phase including the cubic carbide.

Abstract: A cutting insert includes a cutting insert body having a plurality of openings, a plurality of cutting tips, and a braze joint between each of the cutting tips and the cutting insert body. Each of the cutting tips may be disposed in a respective opening of the insert body. The cutting tips include an intermediate feature and a tip portion. The intermediate feature has a geometry that provides a mechanical bond when inserted into an opening of the cutting insert body.

Abstract: A negative insert has double-positive clearance surface.

Abstract: The invention concerns a cutting tool having a base body and a single-layer or multi-layer coating applied thereto. To provide cutting tools which are improved over the state of the art it is proposed according to the invention that the coating includes at least one two-phase or multi-phase layer which contains at least two different phases of metal oxide, wherein the at least one two-phase or multi-phase layer is electrically conductive.

Abstract: A surface-coated cutting tool of the present invention includes a substrate and a coated layer formed on the substrate, and the coated layer is a physical-vapor-deposition layer having a thickness of 10 ?m or more. A surface region having a thickness of 1 ?m from a surface of the coated layer includes a first region whose integrated residual stress is a compressive stress and a second region whose integrated residual stress is a tensile stress, and the integrated residual stress of the surface region falls within the range of ?1.5 to 1.5 GPa in any region included in the surface region.

Abstract: A cutting tool having a substrate and a coating layer for coating the surface of the substrate, the coating layer being composed of Ti1?a?b?c?dAlaWbSicMd(CxN1?x), where M is at least one selected from Nb, Mo, Ta, Hf and Y, 0.45?a?0.55, 0.01?b?0.1, 0.01?c?0.05, 0.01?d?0.1, and 0?x?1. The cutting tool has excellent wear resistance and fracture resistance. The cutting tool may be further provided with a layer composed of at least one selected from carbides, nitrides and carbonitrides of Al and the elements of the groups 4, 5 and 6 of the periodic table.

Abstract: A carbon shafted reaming device includes a rod element, an interface element and a connecting agent. The rod element comprises a first connecting portion having a carbon fiber reinforced structure, wherein the interface element comprises a second connecting portion. The first connecting portion and the second connecting portion are concentrically arranged to each other, and wherein the connecting agent is interposed between the first connecting portion and the second connecting portion. Either of the rod element and the interface element may be coupled to a reaming tool or a drive.

Abstract: 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 TiCxNy-layer with a low tensile stress level of 50-500 MPa and an ?-Al2O3-layer with a high surface smoothness with a mean Ra<0.12 ?m as measured by AFM-technique, obtained by subjecting the coating to an intensive wet blasting operation.

Abstract: A cutting tool insert has a cermet body with a Co and/or Ni binder phase and a coating deposited as monolayer or as multiple and/or alternating layers of carbide, nitride or oxide. The coating has a thickness of 21-50 ?m, when the inserts have a flat rake face, without or with simple chipbreakers and a Co binder phase, or has a thickness of 10-50 ?m, when the inserts have a rake face land with a width of 100-300 ?m with an angle of 10-25° to the rake face and a Co and/or Ni binder phase. The cermet body has more than 50 vol. % Ti-based carbonitride and less than 15 wt % and more than 6 wt % Co and/or Ni binder phase and a hardness of >1650 HV3. The disclosure also relates to the use of the coated cutting tool insert for the machining of cast iron work pieces.

Abstract: The present invention relates to a cutting tool insert comprising a cemented carbide body and a coating particularly useful in medium-rough to rough turning of stainless-steels and superalloys. The cemented carbide body consists of a cemented carbide with a composition of 7.0-12.0 wt-% Co, 5.0-11.0 wt-% cubic carbide forming metals from group IVb, Vb and VIb of the periodic table, preferably Ti, Nb and Ta, and balance WC with a 10-30 mum essentially cubic carbide phase free and binder phase enriched surface zone. The coating comprises an MTCVD Ti(C7N) as the first layer adjacent the body having a thickness of from 2.5 to 7.0 ?m, on top of which an ?-Al2O3 layer is present, with a thickness of between 2.0 and 5.0 ?m, and a total thickness of the coating of between 5.5 and 9.5 ?m. The alumina layer has a (006) texture.

Abstract: An indexable insert according to the present invention includes a substrate and a coating layer formed on the substrate, the coating layer is formed of a plurality of layers including at least a TiCN layer, at least one of the plurality of layers is provided with compressive residual stress, the TiCN layer is mainly composed of TiCN and has highest peak intensity in a (422) plane and second peak intensity in a (311) plane in X-ray diffraction, and a ratio of peak intensity I(422)/I(311) between peak intensity I(422) of the (422) plane and peak intensity I(311) of the (311) plane is not lower than 1.1 and not higher than 10.

Abstract: Disclosed therein is a diamond tool fabricated by combining a mesh net with a synthetic resin material, which includes a diamond sintered body integrally coupled with the outer surface of the mesh net and a synthetic resin material impregnated into the inner surface of the mesh net, thereby maximizing a bonding strength and minimizing weight. The diamond tool includes: a diamond sintered body having a diamond tip; a mesh net integrally coupled with the sintered body in such a way that a portion of the sintered body is impregnated therewith; and a synthetic resin material for forming a body in such a way as to couple the mesh net with the circumference of the sintered body to thereby expose the sintered body to the outside.

Abstract: There is provided a tool at least partly coated with at least two refractory layers of which one of the said layers is a fine-grained ?-Al2O3-layer which is the top layer along the cutting edge-line and the other a TiCxNyOz- or a ZrCxNy-layer being the top layer on the clearance face. The coated tool exhibits excellent flank and crater wear and high resistance to flaking, particularly when used for machining of low carbon steel and stainless steel. Used cutting edges can easily be identified by the naked eye.