High strength sintered impact having excellent resistance to cratering
    11.
    发明授权
    High strength sintered impact having excellent resistance to cratering 有权
    高强度烧结冲击具有优异的耐火蚀性

    公开(公告)号:US06635593B1

    公开(公告)日:2003-10-21

    申请号:US09913265

    申请日:2001-08-10

    IPC分类号: C04B355831

    CPC分类号: C04B35/5831 Y10T407/27

    摘要: A sintered material containing high-pressure phase-type boron nitride and a binder is provided. The high-pressure phase-type boron nitride is contained in an amount of from 50% to 78% by volume, and the balance is a binder phase. The binder phase comprises at least one selected from the group consisting of nitride, carbide, carbonitride, and boride of Ti, nitride, boride and oxide of Al, carbide and boride of W, nitride, carbide, carbonitride and boride of Co, and carbide and boride of Ni, or a mutual solid solution thereof. The binder phase forms a binder phase which is continuous in a sintered material texture. The weight of metal components Al, W, Co and Ni which are present as compounds in the sintered material is from 3% to 20% based on the sintered material. The sintered material is excellent in crater resistance and capable of realizing a long tool life, even under the condition that the temperature of the cutting edge becomes high and the impact is large, as in high-speed interrupted cutting of hardened steel where the cutting speed V becomes at least 150 m/min.

    摘要翻译: 提供含有高压相型氮化硼和粘合剂的烧结材料。 高压相型氮化硼的含量为50〜78体积%,余量为粘结相。 粘结相包括选自Ti,氮化物,硼化物和Al的氧化物的氮化物,碳化物,碳氮化物和硼化物中的至少一种,W,氮化物,碳化物,碳氮化物和Co的硼化物的碳化物和硼化物,以及碳化物 和Ni的硼化物或其相互固溶体。 粘结相形成在烧结材料结构中连续的粘结相。 烧结材料中作为化合物存在的金属成分Al,W,Co,Ni的重量相对于烧结体为3〜20%。 该烧结材料即使在切削刃的温度高,冲击大的条件下也能够实现长的刀具寿命,因为在切削速度高的淬火钢的高速切断切削中 V变为至少150m / min。

    Method of cutting hardened steel with high accuracy
    12.
    发明授权
    Method of cutting hardened steel with high accuracy 有权
    高精度切削淬火钢的方法

    公开(公告)号:US6065377A

    公开(公告)日:2000-05-23

    申请号:US175968

    申请日:1998-10-21

    IPC分类号: B23B1/00 B23B3/00

    摘要: A method of cutting hardened steel using a cBN sintered tool which can improve the surface roughness while maintaining high dimensional accuracy. The upper limit of the tool feed rate is set at such a value that a theoretical surface roughness calculated from the feed rate is between 2/3 and 1/1000 of the target surface roughness. The amount of change of the feed rate between the upper and lower limits of the tool feed rate is set to be between 0.002 and 0.05 mm/rev, and the amount of every feed rate change is set not to be equal to the original feed rate multiplied by an integer. The feed rate is changed forcibly for every number of workpieces for which the total cutting length is between 10 and 1000 meters.

    摘要翻译: 使用可以提高表面粗糙度同时保持高尺寸精度的cBN烧结工具来切割硬化钢的方法。 刀具进给速度的上限被设定为从进给速度计算的理论表面粗糙度在目标表面粗糙度的2/3和1/1000之间的值。 刀具进给速度的上限和下限之间的进给速率的变化量设定在0.002和0.05mm / rev之间,并且每个进给速率变化的量被设定为不等于原始进给速率 乘以整数。 对于总切割长度在10到1000米之间的每个工件数量,进给速率被强制变化。

    Hard sintered body cutting tool
    14.
    发明授权
    Hard sintered body cutting tool 失效
    硬质烧结体切割工具

    公开(公告)号:US5348808A

    公开(公告)日:1994-09-20

    申请号:US67424

    申请日:1993-05-25

    摘要: In a hard sintered cutting tool, the tool life can be further increased. In this hard sintered body cutting tool, a rake face of an edge portion is formed by a major surface of a first sintered body layer containing at least 80 percent by volume and less than 98 percent by volume of diamond, while a flank of the edge portion is formed by a second sintered body layer containing at least 30 percent by volume and less than 75 percent by volume of cubic boron nitride (CBN). The first sintered body layer is formed to have a thickness of at least 0.02 mm and less than 0.1 mm, and to be in a thickness ratio of at least 1:5 to the second sintered body layer. Thus, chipping resistance of the rake face is improved by the first sintered body layer, while wear resistance of the flank is improved by the second sintered body layer. As a result, it is possible to suppress progress of local wear and chipping, whereby the life of the cutting tool is increased as compared with the prior art.

    摘要翻译: 在硬烧结切削工具中,可以进一步提高刀具寿命。 在这种硬质烧结体切割工具中,边缘部分的前刀面由包含至少80体积%且小于98体积%的金刚石的第一烧结体层的主表面形成,而边缘的侧面 部分由包含至少30体积%且小于75体积%的立方氮化硼(CBN)的第二烧结体层形成。 第一烧结体层的厚度形成为至少0.02mm且小于0.1mm,并且与第二烧结体层的厚度比至少为1:5。 因此,通过第一烧结体层改善了前刀面的抗碎裂性,同时通过第二烧结体层提高了侧面的耐磨性。 结果,可以抑制局部磨损和碎裂的进展,从而与现有技术相比,切削工具的寿命增加。

    Hard sintered body tool
    17.
    发明授权
    Hard sintered body tool 有权
    硬质烧结体工具

    公开(公告)号:US6155755A

    公开(公告)日:2000-12-05

    申请号:US258400

    申请日:1999-02-26

    摘要: A tool manufactured by brazing a hard sintered body such as a diamond or cBN to a tool substrate through a bonding layer comprising at least one of Ti and Zr by 15-65 wt % and Cu. Two ridges of the tool substrate on both sides each has a first ridge adjacent to and aligned with a ridge of the hard sintered body and a second ridge provided nearer to an inscribed circle of the tool than is the ridge of the hard sintered body. Also, an upright side face and a bottom of each seating groove formed in the tool substrate intersect each other at an angle smaller than the intersecting angle between a back side and a bottom of each hard sintered body.

    摘要翻译: 通过将包含Ti和Zr中的至少一种为15-65重量%的结合层和Cu钎焊到硬质烧结体如金刚石或cBN而制造的工具。 工具基板的两侧的两个脊部具有与硬质烧结体的脊相邻并与其对准的第一脊部,以及比硬质烧结体的隆起部更靠近工具的内接圆设置的第二脊部。 此外,形成在工具基板中的每个安置槽的直立侧面和底部以比每个硬质烧结体的背面和底部之间的交叉角度小的角度相交。

    Hard sintered body for tools
    19.
    发明授权
    Hard sintered body for tools 失效
    用于工具的硬质烧结体

    公开(公告)号:US5041399A

    公开(公告)日:1991-08-20

    申请号:US451441

    申请日:1989-12-13

    摘要: A hard sintered body for tools is obtained by sintering under a superhigh pressure, a sinter powder mixture containing at least 20 percent by volume and not more than 70 percent by volume of cubic boron nitride powder and having a remainder formed of a binder powder mixture. The binder contains at least 2 percent by weight and not more than 20 percent by weight of Al and at least 2 percent by weight and not more than 20 percent by weight of W, and has a remainder formed of a Ti compound or compounds. The atomic ratio of Ti contained in the binder to a transition metal element or elements belonging to any of the groups IVa, Va and/or VIa of the periodic table including Ti is at least 2/3 and not more than 97/100. In the structure of the sintered body, cubic boron nitride crystals are bonded with each other through bonding phases formed by the binder. For forming the sintered body, at least one or more Ti compounds are selected from a group of TiN.sub.z, Ti(C,N).sub.z, TiC.sub.z, (Ti,M)N.sub.z, (Ti, M) (C,N).sub.z and (Ti,M)C.sub.z, wherein M represents a transition metal element or elements belonging to any one of the groups IVa, Va and/or VIa of the periodic table excluding Ti, and z is within the range of 0.1.ltoreq.z.ltoreq.0.40. Such a sintered body has an excellent crater wear resistance, so that it can be used for making tool inserts for high-speed cutting of steel or cast iron.

    Sintered compact for use in a tool and the method for producing the same
    20.
    发明授权
    Sintered compact for use in a tool and the method for producing the same 失效
    用于工具的烧结体及其制造方法

    公开(公告)号:US4389465A

    公开(公告)日:1983-06-21

    申请号:US349663

    申请日:1982-02-17

    摘要: The invention relates to a sintered compact for use in an ultrahard tool having high resistance to heat and wear, outstanding thermal conductivity and thermal shock resistance property at elevated temperature, and suitable for high-speed cutting, and to a method for producing the same. A powder mixture comprising 20-80 volume % high pressure form boron nitride powder, the residual part consisting of Al.sub.2 O.sub.3 powder or a compound ceramic powder principally comprising Al.sub.2 O.sub.3 powder and also containing carbides, nitrides of IVb, Vb, VIb metals of the periodic table, mutual solid solution thereof or admixture thereof, is sintered as it stands or after pressing under a high pressure and a high temperature so that Al.sub.2 O.sub.3 of the compound ceramic constitutes a continuous phase in the structure of the sintered compact, and the half width of (116) in the X-ray diffraction of CuK.alpha. ray of Al.sub.2 O.sub.3 crystals in the structure constituting the continuous phase is within the range from 0.200 deg. to 0.600 deg., thereby enabling to obtain a sintered compact for use in a tool having the aforesaid high properties.

    摘要翻译: 本发明涉及一种用于具有高耐热耐磨性,高温下优异的导热性和耐热冲击性,适用于高速切割的超硬工具的烧结体及其制造方法。 一种粉末混合物,其包含20-80体积%的高压氮化硼粉末,剩余部分由Al2O3粉末或主要包含Al 2 O 3粉末并且还含有碳化物的化合物陶瓷粉末,周期表中IVb,Vb,VIb族金属的氮化物, 其相互固溶体或其混合物在其高压或高温下进行烧结或压制后,使得复合陶瓷的Al 2 O 3在烧结体的结构中构成连续相,并且(116 )在构成连续相的结构中的Al 2 O 3晶体的CuKα射线的X射线衍射中在0.200度的范围内。 至0.600度,从而能够获得用于具有上述高性能的工具的烧结体。