摘要:
A cutting tool made of surface-coated cemented carbide having the hard coating layer formed on the surface of a cemented carbide substrate, wherein the hard coating layer has a top layer and a bottom layer, the top layer includes a structure having the thin layer A and the thin layer B being stacked alternately, with the thin layer A having the composition of [Ti1-(A+B)AlASiB]N (A is in a range from 0.01 to 0.06 and B is in a range from 0.25 to 0.35 in an atomic ratio) and the thin layer B having the composition of [Ti1-(C+D)AlCSiD]N (C is in a range from 0.30 to 0.45 and D is in a range from 0.10 to 0.15), and the bottom layer comprises single phase structure having the composition of [Ti1-(E+F)AlESiF]N (E is in a range from 0.50 to 0.60 and F is in a range from 0.01 to 0.09).
摘要翻译:一种由表面涂覆的硬质合金制成的切削工具,其中硬质涂层形成在硬质合金基体的表面上,其中硬涂层具有顶层和底层,顶层包括具有薄层A 并且薄层B交替堆叠,薄层A的组成为[Ti 1-(A + B)> Al sub> B u> N(A为0.01〜0.06的范围,B为原子比为0.25〜0.35的范围),具有[Ti 1〜(C + D)]的组成的薄层B, N(C在0.30〜0.45的范围内,D在0.10〜0.15的范围内),底层 包括具有[Ti 1 - (E + F) - Al C 1 F N] N的组成的单相结构(E在一个范围内 0.50至0.60,F在0.01至0.09的范围内)。
摘要:
In the radius end mill, main gash faces has an angle of inclination with respect to an axis that is smaller than a twist angle of chip discharge flutes. The main gash faces are formed on inner circumferential sides of distal end portions of wall surfaces that face in a tool rotation direction of helically twisted chip discharge flutes, which is formed on an outer circumference of a distal end portion of a tool body that is rotated around the axis. End cutting edges are formed on a distal end of the main gash faces. Sub gash faces has an angle of inclination with respect to the axis that is greater than that of the main gash faces. The sub gash faces are formed on an outer circumferential side of the main gash faces such that they extend away via step portions from the main gash faces. In addition, corner cutting edges that have a protruding arc-shaped contour are formed to be continuous with an outer circumferential side of the end cutting edges extending from a distal end as far as an outer circumference of the sub gash faces.
摘要:
A cutting tool made of surface-coated cubic boron nitride-based ultrahigh pressure sintered material, comprising a cutting insert main body formed by ultrahigh pressure sintering of compact composed of titanium nitride, aluminum and/or aluminum oxide, and boron nitride, and a hard coating layer vapor deposited on the main body. The main body has a texture containing cubic boron nitride, titanium nitride and reaction product. The hard coating layer has a lower layer of composite nitride having a composition of [Ti1−XAlX]N, where X is in a range from 0.40 to 0.60 in an atomic ratio, and the upper layer comprises a thin layer A having the composition of [Ti1−XAlX]N, where X is in a range from 0.40 to 0.60 in an atomic ratio, and a thin layer B consisting of a Ti nitride (TiN). The upper layer has a consisting of the thin layer A and a thin layer B layered alternately.
摘要:
This cemented carbide material for a surface coated gear cutting tool is employed in a substrate for a surface coated gear cutting tool which is obtained by forming a hard coated layer on a surface of the substrate, the cemented carbide material for a surface coated gear cutting tool includes a WC-βt-Co based cemented carbide, wherein a content of Co forming a binder phase of the cemented carbide material is in a range of 12 to 17 wt %, and among components of a βt solid solution forming a hard phase of the cemented carbide material, a content of components excluding WC is in a range of 15 to 20 wt %, and a total content of Ta carbonitride and Nb caronitride is in a range of 5 to 8 wt %.
摘要:
In this insert, in addition to the insert being formed so that the cutting edge is twisted at a helix angle within the range of 5° to 25° about the axis when the insert is attached to the insert mounting seat, the thickness of the insert body at the flank located on a straight line, which passes through the center of the rough hemisphere formed by the rotational locus of the cutting edge and forms an angle of inclination of 90° relative to the axis, is set to be within the range of 0.5 D to 0.9 D relative to the thickness D of the rough plate that composes the insert body. As a result, since a comparatively gentle but adequately large helix angle is imparted to the cutting edge, cutting resistance decreases. In addition, since the thickness of the insert body at the flank on the rear end side of the insert body is not excessively thin, the rigidity of the insert body is adequately secured.
摘要:
The invention provides a coated cutting tool made of cemented carbide in which a hard coating layer has excellent wear resistance in high-speed cutting operation, wherein (a) a crystal orientation hysteresis layer which consists of a carbonitride compound layer and (b) a hard coating layer which consists of a layer of nitride compound and has a well defined crystal orientation and/or degree of crystallinity are formed on the surface of a cemented carbide substrate, preferably on the surface of a tungsten carbide based cemented carbide or titanium carbonitride based cermet by physical vapor deposition, wherein the crystal orientation hysteresis layer is deposited between the surface of a cemented carbide substrate and the hard coating layer. In one specific example, (a1) the carbonitride compound layer has an average thickness of 0.05 to 0.5 μm and is preferably a Ti—Al carbonitride compound layer expressed by the composition formula as (Ti1−XAlX)(N1−YCY), wherein X ranges from 0.05 to 0.20 and Y ranges from 0.01 to 0.15 by atomic ratio and (b1) the nitride compound layer has an average thickness of 2 to 15 μm and is preferably a Ti—Al nitride compound layer expressed by the composition formula as (Ti1−ZAlZ)N, wherein Z ranges from 0.45 to 0.65 by atomic ratio. In another specific example, (a2) the carbonitride compound layer has an average thickness of 0.05 to 0.5 μm and is preferably a Ti—Al carbonitride compound layer expressed by the composition formula as (Ti1−XAlX)(N1−YCY), wherein X ranges from 0.01 to 0.15 and Y ranges from 0.01 to 0.15 by atomic ratio and (b2) the nitride compound layer has an average thickness of 2 to 10 μm and is preferably a Al—Ti—Si nitride compound layer expressed by the composition formula as (Al1−(A+B)TiASiB)N, wherein A ranges from 0.35 to 0.55 and B ranges from 0.05 to 0.20 by atomic ratio.
摘要:
A surface-coated cutting tool member exhibiting a superior tool life due to a hard coating layer thereof is provided. The surface-coated cutting tool member includes a tungsten carbide based cemented carbide substrate, a titanium carbonitride based cermet substrate, or a cubic boron nitride based sintered substrate; and a hard coating layer of a nitride compound containing titanium and yttrium, which is formed on a surface of the substrate using a physical vapor deposition method in an overall average thickness of 1 to 15 μm. The hard coating layer has a component concentration profile in which maximum Y component containing points (minimum Ti component containing points) and points without Y component (TiN points) appear alternatingly and repeatedly at a predetermined interval in a direction of thickness of the hard coating layer, and the amount of contained Y component is continuously changed from the maximum Y component containing points to the points without Y component and from the points without Y component to the maximum Y component containing points, the maximum Y component containing points satisfy a composition formula of (Ti1-XYX)N (where X indicates an atomic ratio of 0.005 to 0.15), and a distance between one of the maximum Y component containing points and adjacent one of the points without Y component is from 0.01 to 0.1 μm.
摘要翻译:提供了由于其硬涂层而具有优异的工具寿命的表面涂覆的切削工具构件。 表面涂覆的切削工具构件包括碳化钨基硬质合金基板,基于碳氮化钛的金属陶瓷基板或立方氮化硼基烧结基板; 以及包含钛和钇的氮化物的硬涂层,其使用物理气相沉积法在基板的表面上形成总平均厚度为1至15μm。 硬涂层具有成分浓度分布,其中含有最大Y成分(含最少Ti成分的点)和不含Y成分的点(TiN点)以硬涂层的厚度方向以预定间隔交替重复出现 ,并且所含的Y成分的含量从包含最大Y成分的点到不含Y成分的点和不含Y成分的点连续地变化为含有最多Y成分的点,所以含有Y成分的最大Y成分满足下式 (Ti 1-X X Y X)N(其中X表示原子比为0.005〜0.15),以及最大Y成分含有点和相邻的Y成分之间的距离 没有Y分量的点之一是从0.01到0.1毫米。