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    Sintered body for high-hardness tools
    22.
    发明授权
    Sintered body for high-hardness tools 失效
    烧结体用于高硬度工具

    公开(公告)号：US5596156A

    公开(公告)日：1997-01-21

    申请号：US529639

    申请日：1995-09-18

    Applicant: Tomohiro Fukaya ,  Tetsuo Nakai

    Inventor： Tomohiro Fukaya ,  Tetsuo Nakai

    IPC: C22C29/16 ,  B01J3/06 ,  B22F3/14 ,  B22F3/15 ,  C22C1/05 ,  C22C26/00 ,  C22C29/04

    CPC classification number: C22C26/00 ,  B01J3/062 ,  B01J2203/0645 ,  B01J2203/066 ,  B01J2203/0685 ,  C22C2026/005

    Abstract: The invention provides a sintered body for high-hardness tools which, when used for cutting work of cast irons where the cutting edge undergoes high temperature and abrupt impact, holds high chip-off and abrasion resistances and exhibits good cutting performance. The sintered body for high-hardness tools is obtained by sintering 60 to 75% by volume of cubic boron nitride powder and remaining part of a binder powder under a superhigh pressure, the binder comprising 5 to 15% by weight of Al, and the remaining part comprising a compound represented by (Hf.sub.X Ti.sub.y M.sub.1-x-y)(C.sub.Z N.sub.1-z).sub..alpha. (where M denotes an element belonging to IVa, Va or VIa group in the periodic table except Ti and Hf, and where 0.1.ltoreq.x.ltoreq.0.5, 0.5.ltoreq.y.ltoreq.0.9, 0.7.ltoreq.z.ltoreq.0.9, and 0.6.ltoreq..alpha..ltoreq.0.8) or a mixture of a plurality of compounds that totally results in the aforementioned composition.

    Abstract translation: 本发明提供一种用于高硬度工具的烧结体，当用于切割边缘经受高温和突然冲击的铸铁的切割工作时，其具有高的切屑和耐磨性，并且具有良好的切削性能。 用于高硬度工具的烧结体通过在超高压下烧结60至75体积％的立方氮化硼粉末和剩余部分粘合剂粉末而获得，粘合剂包含5至15重量％的Al，剩余的 部分包括由（HfX y y 1-xy）（CZN 1-z）α表示的化合物（其中M表示除了Ti和Hf之外的元素周期表中属于IVa，Va或VIa基团的元素，其中0.1 < 0.5,0.5≤y≤0.9,0.7≤z≤0.9,0.6≤α≤0.8）或多个化合物的混合物，其总体上导致上述组成。

    Sintered body for high-accuracy working tools
    23.
    发明授权
    Sintered body for high-accuracy working tools 失效
    用于高精度工作工具的烧结体

    公开(公告)号：US5092920A

    公开(公告)日：1992-03-03

    申请号：US450849

    申请日：1989-12-13

    Applicant: Tetsuo Nakai ,  Mitsuhiro Goto ,  Tomohiro Fukaya

    Inventor： Tetsuo Nakai ,  Mitsuhiro Goto ,  Tomohiro Fukaya

    IPC: C04B35/583 ,  B01J3/06 ,  C04B35/5831 ,  C22C26/00 ,  C22C29/00 ,  C22C29/02 ,  C22C29/04 ,  C22C29/16

    CPC classification number: B01J3/062 ,  C04B35/5831 ,  C22C26/00 ,  C22C29/02 ,  C22C29/16 ,  B01J2203/0645 ,  B01J2203/066 ,  B01J2203/0685 ,  C22C2026/005

    Abstract: A sintered body for high-accuracy working tools is obtained by sintering powder mixture containing at least 45 percent by volume and not more than 60 percent by volume of cubic boron nitride powder having an average particle size of not more than 2 .mu.m and having a remainder formed of binder powder under a superhigh pressure. The binder contains at least 5 percent by weight and not more than 15 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 binder 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. When at least one or more Ti compounds are selected from a group of TiN.sub.z, Ti(C.sub.1-x N.sub.x).sub.z, (Ti,M) (C.sub.1-x N.sub.x ).sub.z and (Ti,M)N.sub.z, where M represents transition metal element or elements belonging to any of the groups IVa, Va and/or VIa of the periodic table excluding wherein z is within the range 0.45.ltoreq.z.ltoreq.0.65 and x is within the range of 0.50.ltoreq.x

    Hard sintered compact for tools
    25.
    发明授权
    Hard sintered compact for tools 失效
    用于工具的硬质烧结体

    公开(公告)号：US4911756A

    公开(公告)日：1990-03-27

    申请号：US230618

    申请日：1988-08-09

    Applicant: Tetsuo Nakai ,  Mitsuhiro Goto

    Inventor： Tetsuo Nakai ,  Mitsuhiro Goto

    IPC: C22C1/05 ,  B01J3/06 ,  B22F3/14 ,  B22F3/15 ,  C04B35/5831 ,  C22C26/00 ,  C22C29/14 ,  C22C29/16

    CPC classification number: B01J3/062 ,  C04B35/5831 ,  C22C26/00 ,  C22C29/16 ,  B01J2203/0645 ,  B01J2203/066 ,  B01J2203/0685 ,  C22C2026/005

    Abstract: A sintered compact is obtained by sintering a mixture containing about 50 to 75 percent by volume of cubic boron nitride and about 25 to 50 percent of a binder under cBN-stable superhigh pressure conditions. The binder contains about 20 to 50 percent by weight of Al and one or more Ti compounds selected from the group consisting of TiN.sub.z, Ti(C,N).sub.z, TiC.sub.2, (Ti,M)C.sub.z, (Ti,M) (C,N).sub.z and (Ti,M)N.sub.z, wherein M indicates a transition metal of the group IVa, Va or VIa of the periodic table excepting Ti, and wherein z is within a range of 0.5.ltoreq.z.ltoreq.0.85. The atomic ratio of the content of Ti to that of the transition metal M in the binder is within the range of about2/1.ltoreq.Ti/M.ltoreq.97/3.The binder further contains tungsten or one or more tungsten compounds, whereby the total tungsten concentration in the binder is about 4 to 40 percent by weight.

    Abstract translation: 通过在cBN稳定的超高压条件下烧结含有约50至75体积％的立方氮化硼和约25至50％的粘合剂的混合物来获得烧结体。 所述粘合剂含有约20〜50重量％的Al和选自TiNz，Ti（C，N）z，TiC 2，（Ti，M）Cz，（Ti，M）（C ，N）z和（Ti，M）Nz，其中M表示除了Ti之外的元素周期表的基团IVa，Va或VIa的过渡金属，并且其中z在0.5≤z≤0.85的范围内 。 粘合剂中Ti与过渡金属M含量的原子比在约2/1 Ti / M = 97/3的范围内。 粘合剂还含有钨或一种或多种钨化合物，由此粘合剂中的总钨浓度为约4-40重量％。

    Polycrystalline cubic boron nitride abrasive and process for preparing same in the absence of catalyst
    28.
    发明授权
    Polycrystalline cubic boron nitride abrasive and process for preparing same in the absence of catalyst 失效
    多晶立方氮化硼磨料及其制备方法，无催化剂

    公开(公告)号：US4289503A

    公开(公告)日：1981-09-15

    申请号：US47656

    申请日：1979-06-11

    Applicant: Francis R. Corrigan

    Inventor： Francis R. Corrigan

    IPC: C04B35/583 ,  B01J3/06 ,  C04B35/5831 ,  C09K3/14 ,  B24D3/28

    CPC classification number: B01J3/062 ,  C04B35/5831 ,  C09K3/1418 ,  B01J2203/0645 ,  B01J2203/066 ,  B01J2203/0685

    Abstract: Cubic boron nitride has been made from powdered hexagonal boron nitride by a process which comprises vacuum firing of the HBN and conversion by high pressure-high temperature processing at 55-80 kilobars and 1600.degree. C. to the reconversion temperature.The high pressure reaction cell has a special design which prevents the entrance of impurities into the sample. This cell, referring to FIG. 2, comprises, for example, a carbon tube (8) enclosing concentric titanium sleeve (9). Within the cylinder defined by the tube and sleeve are: the HBN sample (4), carbon filler (3), shielding tantalum foil discs (2) and carbon end plugs (10).The vacuum firing is done at pressures of 10.sup.-5 --10.sup.-10 mm Hg, 1400.degree.-1900.degree. C., for 5 minutes--4 hours, and is believed to form a thin, free-boron coating on the HBN particles.The process works on both pyrolytic (turbostratic) and graphitic hexagonal boron nitride.Grinding grits formed by milling cubic boron nitride chunks recovered from the high pressure-high temperature process have resulted in higher grinding ratios than commercially available CBN.

    Abstract translation: 立方氮化硼已经由粉末状六方氮化硼制成，包括通过HBN的真空烧制和通过在55-80千磅和1600℃的高压高温处理转化为再转化温度的方法。 高压反应池具有防止杂质进入样品的特殊设计。 该单元参照图1。 如图2所示，包括例如包围同心钛套筒（9）的碳管（8）。 在由管和套筒限定的圆筒内是：HBN样品（4），碳填料（3），屏蔽钽箔盘（2）和碳端塞（10）。 真空烧制在10-5-10-10mmHg，1400-1900℃的压力下进行5分-4小时，据信在HBN颗粒上形成薄的自由硼涂层。 该方法在热解（涡旋）和石墨六方氮化硼两者中起作用。 通过研磨由高压 - 高温工艺回收的立方氮化硼块形成的研磨砂粒导致比市售CBN更高的研磨比。

    Composite compact of interleaved polycrystalline particles and cemented carbide masses
    29.
    发明授权
    Composite compact of interleaved polycrystalline particles and cemented carbide masses 失效
    交错多晶颗粒和硬质合金块的复合材料

    公开(公告)号：US4255165A

    公开(公告)日：1981-03-10

    申请号：US972345

    申请日：1978-12-22

    Applicant: Mahlon D. Dennis ,  Paul D. Gigl

    Inventor： Mahlon D. Dennis ,  Paul D. Gigl

    IPC: B01J3/06 ,  B22F7/06 ,  B24D3/06 ,  B24D5/00

    CPC classification number: B22F7/06 ,  B01J3/062 ,  B24D3/06 ,  B24D5/00 ,  B01J2203/062 ,  B01J2203/0645 ,  B01J2203/0655 ,  B01J2203/066 ,  B01J2203/0685

    Abstract: One or more masses of bonded particles of diamond, cubic boron nitride (CBN), and wurtzite boron nitride (WBN) are sandwiched between or encapsulated by two masses of cemented carbide bonded to the particle masses. In the preferred embodiment, the particle masses are comprised of (1) at least 70% by volume of said particles, and (2) a metallic phase comprised of the cementing agent of the carbide mass. The composite compacts find utility in drill bit, mining tool and wear part applications.A method for making such a composite compact comprises (1) placing within a reaction cell masses of abrasive particles and at least two carbide masses interleaved with the abrasive particle masses, (2) the masses are placed in the cell in such a manner to allow for the accommodation of pressure and (3) simultaneously subjecting the cell and the contents thereof to temperature and pressure conditions at which the particles are stable.A method for abrading or cutting a workpiece with a composite compact comprises providing (1) a tubular carbide mass and a bonded mass of abrasive particles disposed in and bonded to the carbide mass in a central cavity thereof and (2) moving either the compact or workpiece relative to the other to provide the cutting or abrading action.

    Abstract translation: 金刚石，立方氮化硼（CBN）和纤锌矿氮化硼（WBN）的一个或多个粘结颗粒的质量被两个质量接合到颗粒物质上的硬质合金夹在或包封之间。 在优选的实施方案中，颗粒物质包括（1）至少70体积％的所述颗粒，和（2）由碳化物块的固化剂组成的金属相。 复合材料可用于钻头，采矿工具和磨损零件应用。 制造这样的复合压块的方法包括（1）在反应池内放置磨料颗粒和至少两个碳化物质量块与磨料颗粒块交错，（2）质量以这样一种方式放置在电池中： 用于调节压力和（3）同时使细胞及其内容物受到颗粒稳定的温度和压力条件。 一种用复合压块研磨或切割工件的方法包括提供（1）管状碳化物块和在其中心腔中设置并结合到碳化物块的磨料颗粒的粘合块，以及（2）移动压块或 工件相对于另一个提供切割或研磨作用。

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