摘要:
A surface-coated cutting tool of the present invention includes: a hard coating layer which is vapor-deposited on a surface of a tool body made of tungsten carbide-based cemented carbide and has an average thickness of 2 mm to 10 mm, in which (a) the hard coating layer comprises a layer made of complex nitride of Al, Cr, and B in which a ratio (atomic ratio) of the amount of Cr is 0.2 to 0.45 and a ratio (atomic ratio) of the amount of B is 0.01 to 0.1 to the total amount of Al, Cr, and B, and (b) in an area within 100 mm from an edge tip on a flank face of the surface-coated cutting tool, the hard coating layer has a granular crystal grain structure and the average grain size of granular crystal grains is 0.1 mm to 0.4 mm on the surface of the hard coating layer.
摘要:
It is an object to provide a rotating tool having an excellent wear resistance. The rotating tool includes: a base member including a cutting edge portion and a flute portion; and a coating film that coats a surface of the base member, a ratio B/A of a film thickness B of the coating film coating a surface of the flute portion to a film thickness A of the coating film coating a surface of the cutting edge portion being not less than 0.8.
摘要:
A surface-coated cutting tool includes a base material and a coating formed on the base material. The coating includes an α-Al2O3 layer. The α-Al2O3 layer contains α-Al2O3 crystal grains and sulfur, and has a TC(006) of more than 5 in texture coefficient TC(hkl). The sulfur has a concentration distribution in which a concentration of the sulfur decreases in a direction away from a base-material-side surface of the α-Al2O3 layer, in a thickness direction of the α-Al2O3 layer.
摘要:
One aspect of the disclosure relates to a cutting tool for forming a final opening in a stack that includes at least two layers and a pilot opening having a pilot-opening dimension and extending through at least one of the at least two layers. The cutting tool includes a shank. The cutting tool also includes a first portion including at least one of a first coating or the first coating and a second coating, wherein the first coating at least partially covers the first portion. The cutting tool also includes a second portion between the shank and the first portion, wherein the second portion includes the second coating, and wherein the second coating at least partially covers the second portion.
摘要:
A surface-coated cutting tool of the present invention includes: a cutting tool body; and a hard coating layer provided on a surface of the cutting tool body, in which the hard coating layer includes a complex nitride or carbonitride layer, which is expressed by a composition formula: (Ti1-xAlx)(CyN1-y), the average content ratio Xavg of Al and the average content ratio Yavg of C in the complex nitride or carbonitride layer satisfy 0.60≦Xavg≦0.95 and 0≦Yavg≦0.005, provided that each of Xavg and Yavg is in atomic ratio, the complex nitride or carbonitride layer includes crystal grains with a cubic structure, and in the crystal grains with the cubic structure, a composition of Ti and Al is periodically changed in a direction of the normal line to the surface of the cutting tool body.
摘要:
A coated cutting tool has a base material of a WC-based cemented carbide and a film formed on the surface of the base material by a chemical vapor deposition method. The coated cutting tool has a rake face, a flank face and a cutting edge ridgeline part positioned between the rake face and the flank face being provided, wherein a total film thickness of the entire film is 3 to 20 μm in an average film thickness, and one or more oblique cracks where an extension angle of the crack to the surface of the film is 45° or less are present at the rake face within 300 μm from the cutting edge ridgeline part.
摘要:
In order to achieve a long service life for a machining tool, in particular for a solid carbide drill, it is provided with a special wear protection coating. In a first method step, in order to form this coating, a first layer made of a first material is applied in the region of a cutting edge and in the adjoining surface regions, and specifically, a flank face and a rake face. In a second step, the applied first material of the first layer is selectively removed at least partially, and preferably completely, only in the region of the cutting edge. Finally, in a third method step, a second layer made of a second wear-resistant material is applied both to the cutting edge and to the face regions. In this way, a coating having a high overall thickness in the face regions is made possible, without the risk of cracking.
摘要:
A forming tool for forming leading edges of turbine blades is disclosed. In various embodiments, a forming tool may comprise a cylindrically-shaped body having a notch around the circumference of the cylindrically-shaped body. The notch may be positioned perpendicularly to a center axis of the cylindrically-shaped body. Further, the notch may have a notch contour with an upper notch contour and a lower notch contour, and where the notch contour is a relief of a selected turbine blade leading edge. The forming tool may be a grinding tool or a cutting tool. Moreover, a forming process may comprise forming, by a forming tool, a first portion of a turbine blade leading edge with a rough edge result, and forming, by a milling cutter, a second portion of the turbine blade leading edge with a rough edge result.
摘要:
A coated cutting tool and a hard and wear resistant coating for a body include at least one metal based nitride layer. The layer is (ZrxCrl-x-y-zAlyMez)Na with 0.55
摘要:
Method of manufacturing a cemented carbide cutting tool, includes a) bonding a body part of hot work tool steel and a cutting part of cemented carbides together by heat treatment; b) cooling the bonded body part and cutting part for a preset period of time; c) machining the cutting part to have a predetermined pattern according to its application and forming a cutting tool; d) coating a surface of the machined cutting tool with a film of at least one of metallic oxides, nitrides and carbides; and e) cooling the coated cutting tool for a preset period of time in air, and a cutting tool manufactured by the method. Cracks do not generate even after the coating step, and thus cemented carbide cutting tool having excellent mechanical properties may be manufactured.